Merging upstream version 127.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

266 files changed, 1409 insertions, 1453 deletions

diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js
index 1ca3793d7b..65fada01d7 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js
index f73e256111..a0522ec731 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js
@@ -17,6 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js
index 5e059a4a76..bc0aaee31f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js
index da71de2a5e..9be76bcecf 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js
@@ -24,7 +24,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js
index 226a32e614..7f68e3a3d3 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js
@@ -27,7 +27,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js
index 0336ed473b..e22d52d4f8 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js
@@ -35,7 +35,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js
index 1fc7a18431..db1f2541fd 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js
@@ -23,7 +23,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js
index 4cd423d4aa..c1bfdc8238 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js
@@ -31,7 +31,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js
index 8d1b4a1b50..a6a0dc8021 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js
@@ -35,7 +35,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js
index 63cb98e814..393b64d1bf 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js
@@ -21,7 +21,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js
index 1c2556cbc8..069f8267ce 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js
@@ -33,7 +33,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js
index 4c4b1717dc..dd4c0627c2 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js
@@ -27,7 +27,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js
index 65c386d29e..52b27802bb 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js
@@ -22,7 +22,8 @@ Object.defineProperties(obj, {
   property: func
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js
index 8c48fb76e7..9f41fd0f16 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   property: arr
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js
index bb53c4479c..8350b76d13 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   property: str
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js
index 9169fecaa5..f525efe3bc 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js
index 9e00beb444..4c9fc79514 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js
index 2ecb58c0ff..32f35ad65a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js
@@ -19,7 +19,8 @@ Object.defineProperties(obj, {
   property: Math
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js
index f59bf901cf..2f8b893640 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js
index 3dfaede9c5..d496fb8c3f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js
index 8aa6779cc4..0caea972f3 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js
@@ -18,7 +18,8 @@ Object.defineProperties(obj, {
   property: JSON
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js
index 5b32ddb731..4c25c2e3f8 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   property: descObj
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js
index 1b952cf469..b716822825 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js
@@ -19,8 +19,9 @@ var func = function(a, b) {
     property: arguments
   });
 
-  assert(obj.hasOwnProperty("property"));
-  verifyNotWritable(obj, "property");
+  verifyProperty(obj, "property", {
+    writable: false,
+  });
 };
 
 func();
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js
index 16940fe042..0592cacc01 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js
@@ -19,7 +19,8 @@ Object.defineProperties(obj, {
   property: this
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js
index 46ee75a0b4..e02de2a1c8 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js
index 4c84d6a35f..88f2995544 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js
index 93001e24f6..edcadba7ad 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js
index 59e2d01fe4..e7e798f730 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js
index 1482e22d29..b0f1b30c4a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js
index 44fcd2d56f..8027fce780 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js
index 5a4d2a2dda..b77bbe2b3d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js
index d018248861..dbadab16b2 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotWritable(obj, "property");
+verifyProperty(obj, "property", {
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js
index a213b737e8..3764293f9b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js
@@ -16,7 +16,8 @@ Object.defineProperties(obj, {
   prop: {}
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js
index 3564a3c259..fcf969e5eb 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js
@@ -28,7 +28,8 @@ Object.defineProperties(obj, {
   prop: descObj
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js
index 895a3897ef..f3dd14d728 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js
@@ -31,7 +31,8 @@ Object.defineProperties(obj, {
   prop: descObj
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js
index b9abacb080..513a5bdd5f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js
@@ -30,7 +30,8 @@ Object.defineProperties(obj, {
   prop: descObj
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js
index bc74560e09..53d33da07e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js
@@ -33,8 +33,8 @@ Object.defineProperties(obj, {
   prop: descObj
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
-assert(obj.hasOwnProperty("prop"));
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js
index baa2e16a9c..d2f6ee592e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js
@@ -20,7 +20,8 @@ Object.defineProperties(obj, {
   prop: descObj
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js
index ef2e2468f2..5a354476bb 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js
@@ -31,7 +31,8 @@ Object.defineProperties(obj, {
   prop: descObj
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js
index b0915952d0..a610b091ca 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js
@@ -25,7 +25,8 @@ Object.defineProperties(obj, {
   prop: descObj
 });
 
-assert(obj.hasOwnProperty("prop"));
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js
index 4417c630c6..94c392693d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js
index 2745ab8dc5..a856931390 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js
index 461bc8e7eb..c7f4adced9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js
index 79c808f491..be36e00228 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js
index 198d61ea03..ccb64939b7 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js
index 701fe1df53..40b32a4e38 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js
index b7997b1714..cda32f5710 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js
index db02d8a4c9..277eea621a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js
@@ -17,7 +17,8 @@ Object.defineProperties(obj, {
   }
 });
 
-assert(obj.hasOwnProperty("property"));
-verifyNotConfigurable(obj, "property");
+verifyProperty(obj, "property", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-100.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-100.js
index 47bc46e287..dfe8e37455 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-100.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-100.js
@@ -25,12 +25,12 @@ Object.defineProperties(obj, {
     configurable: false
   }
 });
-verifyEqualTo(obj, "foo", 200);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 200,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-101.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-101.js
index 462fb436d4..a0292d8c7f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-101.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-101.js
@@ -41,8 +41,9 @@ verifyEqualTo(obj, "foo", get_func2());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-102.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-102.js
index a52e3b7580..6691b4e82e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-102.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-102.js
@@ -34,8 +34,9 @@ Object.defineProperties(obj, {
 });
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-103.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-103.js
index 69239b2647..6963afe790 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-103.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-103.js
@@ -36,8 +36,9 @@ verifyEqualTo(obj, "foo", get_func());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-104.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-104.js
index 9723898ac6..75e893ec15 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-104.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-104.js
@@ -41,8 +41,9 @@ verifyEqualTo(obj, "foo", get_func());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-105.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-105.js
index e8557c7375..5e04bee2d5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-105.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-105.js
@@ -6,6 +6,7 @@ es5id: 15.2.3.7-6-a-105
 description: >
     Object.defineProperties - 'P' is accessor property, P.[[Set]] is
     present and properties.[[Set]] is undefined (8.12.9 step 12)
+includes: [propertyHelper.js]
 ---*/
 
 var obj = {};
@@ -31,7 +32,6 @@ Object.defineProperties(obj, {
   }
 });
 
-var hasProperty = obj.hasOwnProperty("property");
 var verifyGet = false;
 verifyGet = (obj.property === 10);
 
@@ -39,21 +39,13 @@ var verifySet = false;
 var desc = Object.getOwnPropertyDescriptor(obj, "property");
 verifySet = (typeof desc.set === 'undefined');
 
-var verifyEnumerable = false;
-for (var p in obj) {
-  if (p === "property") {
-    verifyEnumerable = true;
-  }
-}
-
-var verifyConfigurable = false;
-delete obj.property;
-verifyConfigurable = obj.hasOwnProperty("property");
+verifyProperty(obj, "property", {
+  enumerable: true,
+  configurable: true,
+});
 
-assert(hasProperty, 'hasProperty !== true');
 assert(verifyGet, 'verifyGet !== true');
 assert(verifySet, 'verifySet !== true');
-assert(verifyEnumerable, 'verifyEnumerable !== true');
-assert.sameValue(verifyConfigurable, false, 'verifyConfigurable');
+
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-106.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-106.js
index 67cf09ee28..fff80e4e60 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-106.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-106.js
@@ -36,8 +36,9 @@ verifyEqualTo(obj, "foo", get_func());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-107.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-107.js
index 87f7990aaa..95f6f95731 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-107.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-107.js
@@ -36,8 +36,9 @@ verifyEqualTo(obj, "foo", get_func());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-108.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-108.js
index cf434bfbd8..63f1b17621 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-108.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-108.js
@@ -36,8 +36,9 @@ verifyEqualTo(obj, "foo", get_func());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-109.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-109.js
index 021bf58825..ccce309d3b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-109.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-109.js
@@ -44,8 +44,9 @@ verifyEqualTo(obj, "foo", get_func2());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-110.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-110.js
index 1dca6bcb2f..71a658e156 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-110.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-110.js
@@ -36,19 +36,21 @@ var properties = {
 };
 
 Object.defineProperties(obj, properties);
-verifyEqualTo(obj, "foo1", 200);
 
-verifyWritable(obj, "foo1");
+verifyProperty(obj, "foo1", {
+  value: 200,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
-verifyEnumerable(obj, "foo1");
-
-verifyConfigurable(obj, "foo1");
 verifyEqualTo(obj, "foo2", get_func());
 
 verifyWritable(obj, "foo2", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo2");
-
-verifyConfigurable(obj, "foo2");
+verifyProperty(obj, "foo2", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114-b.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114-b.js
index dd6222e964..fe50a5bf47 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114-b.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114-b.js
@@ -24,8 +24,9 @@ verifyEqualTo(arr, "length", 0);
 
 verifyWritable(arr, "length", "length", 1);
 
-verifyNotEnumerable(arr, "length");
-
-verifyNotConfigurable(arr, "length");
+verifyProperty(arr, "length", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114.js
index 2afb374774..d11ce306db 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-114.js
@@ -26,8 +26,9 @@ verifyEqualTo(arr, "length", 2);
 
 verifyWritable(arr, "length", "length", 5);
 
-verifyNotEnumerable(arr, "length");
-
-verifyNotConfigurable(arr, "length");
+verifyProperty(arr, "length", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js
index 239ba3bb3e..7bd6e47c8d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js
@@ -24,10 +24,11 @@ Object.defineProperties(arr, {
 assert.sameValue(arr.length, 0);
 
 arr.length = 2;
-assert.sameValue(arr.length, 2);
 
-verifyNotEnumerable(arr, "length");
-
-verifyNotConfigurable(arr, "length");
+verifyProperty(arr, "length", {
+  value: 2,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-12.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-12.js
index 0c195e5e0d..323e2e3f49 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-12.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-12.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(fun, "prop", 11);
-
-  verifyNotWritable(fun, "prop");
-
-  verifyNotEnumerable(fun, "prop");
-
-  verifyNotConfigurable(fun, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(fun, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-120.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-120.js
index 4704109b46..0b7585f683 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-120.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-120.js
@@ -19,12 +19,11 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyEqualTo(arr, "length", 0);
-
-verifyNotWritable(arr, "length");
-
-verifyNotEnumerable(arr, "length");
-
-verifyNotConfigurable(arr, "length");
+verifyProperty(arr, "length", {
+  value: 0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-13.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-13.js
index be22cb8d81..daf0c3e4ec 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-13.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-13.js
@@ -25,18 +25,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "prop", 11);
-
-  verifyNotWritable(arr, "prop");
-
-  verifyNotEnumerable(arr, "prop");
-
-  verifyNotConfigurable(arr, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-14.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-14.js
index 3ecd73ab51..3de547f1e7 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-14.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-14.js
@@ -25,18 +25,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(str, "prop", 11);
-
-  verifyNotWritable(str, "prop");
-
-  verifyNotEnumerable(str, "prop");
-
-  verifyNotConfigurable(str, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(str, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-15.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-15.js
index a86aaa2ec5..ede416b548 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-15.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-15.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "prop", 11);
-
-  verifyNotWritable(obj, "prop");
-
-  verifyNotEnumerable(obj, "prop");
-
-  verifyNotConfigurable(obj, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-16.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-16.js
index e78dcaa3e2..1e72361437 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-16.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-16.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "prop", 11);
-
-  verifyNotWritable(obj, "prop");
-
-  verifyNotEnumerable(obj, "prop");
-
-  verifyNotConfigurable(obj, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js
index cbe3a65ff3..7359782f32 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js
@@ -24,10 +24,12 @@ Object.defineProperties(arr, {
 });
 
 //try to overwrite length value of arr
-verifyNotWritable(arr, "length")
+verifyProperty(arr, "length", {
+  value: 1,
+  writable: false,
+});
 
 assert(!arr.hasOwnProperty("1"));
-assert.sameValue(arr.length, 1);
 assert.sameValue(arr[0], 0);
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js
index f699551ca6..f7bd847919 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js
@@ -31,8 +31,11 @@ try {
   throw new Test262Error("expected to throw TypeError")
 } catch (e) {
   assert(e instanceof TypeError);
-  assert.sameValue(arr.length, 2);
-  verifyNotWritable(arr, "length");
 }
 
+verifyProperty(arr, "length", {
+  value: 2,
+  writable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js
index 7117baebef..cbcebe0b84 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js
@@ -31,11 +31,16 @@ try {
   throw new Test262Error("Expected to throw TypeError");
 } catch (e) {
   assert(e instanceof TypeError);
-  assert(arr.hasOwnProperty("1"));
-  verifyNotWritable(arr, "length");
-  assert.sameValue(arr[0], 0);
-  assert.sameValue(arr[1], 1);
-  assert.sameValue(arr.length, 2)
 }
 
+assert(arr.hasOwnProperty("1"));
+
+verifyProperty(arr, "length", {
+  value: 2,
+  writable: false,
+});
+
+assert.sameValue(arr[0], 0);
+assert.sameValue(arr[1], 1);
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js
index 1ebd1320be..5bcbd47137 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js
@@ -24,8 +24,11 @@ Object.defineProperties(arr, {
 });
 
 assert(!arr.hasOwnProperty("1"));
-assert.sameValue(arr.length, 0);
 assert(!arr.hasOwnProperty("0"));
-verifyNotWritable(arr, "length");
+
+verifyProperty(arr, "length", {
+  value: 0,
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-18.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-18.js
index fcd1e5d0d7..0c037c61f7 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-18.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-18.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "prop", 11);
-
-  verifyNotWritable(obj, "prop");
-
-  verifyNotEnumerable(obj, "prop");
-
-  verifyNotConfigurable(obj, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-19.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-19.js
index 9d5111dd19..f4a223d68e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-19.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-19.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "prop", 11);
-
-  verifyNotWritable(obj, "prop");
-
-  verifyNotEnumerable(obj, "prop");
-
-  verifyNotConfigurable(obj, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-195.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-195.js
index 46e202818f..7ba221bf61 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-195.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-195.js
@@ -19,12 +19,11 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyEqualTo(arr, "0", undefined);
-
-verifyNotWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js
index c95e92a883..b4b4f90351 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js
@@ -24,8 +24,9 @@ Object.defineProperties(arr, {
   }
 });
 
-assert(arr.hasOwnProperty("0"));
-verifyNotWritable(arr, "0");
-assert.sameValue(arr[0], 1001);
+verifyProperty(arr, "0", {
+  value: 1001,
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js
index 5d24369753..97417e1683 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js
@@ -24,8 +24,8 @@ Object.defineProperties(arr, {
   }
 });
 
-assert(arr.hasOwnProperty("0"));
-verifyNotConfigurable(arr, "0");
-assert(arr.hasOwnProperty("0"));
+verifyProperty(arr, "0", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-2.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-2.js
index 19de43a79c..883e70de76 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-2.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-2.js
@@ -26,12 +26,11 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyEqualTo(obj, "prop", 12);
-
-verifyNotWritable(obj, "prop");
-
-verifyNotEnumerable(obj, "prop");
-
-verifyConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-200.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-200.js
index b382c908c7..7c43a21b62 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-200.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-200.js
@@ -21,12 +21,11 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyEqualTo(arr, "0", 1001);
-
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 1001,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-202.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-202.js
index 6997fab614..8a1c4998e5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-202.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-202.js
@@ -8,6 +8,7 @@ description: >
     named property, 'P' property doesn't exist in 'O', test [[Set]] of
     'P' property in 'Attributes' is set as undefined value if [[Set]]
     is absent in accessor descriptor 'desc'  (15.4.5.1 step 4.c)
+includes: [propertyHelper.js]
 ---*/
 
 var arr = [];
@@ -23,24 +24,14 @@ Object.defineProperties(arr, {
   }
 });
 
-var verifyEnumerable = false;
-for (var i in arr) {
-  if (i === "0" && arr.hasOwnProperty("0")) {
-    verifyEnumerable = true;
-  }
-}
-
 var desc = Object.getOwnPropertyDescriptor(arr, "0");
-var propertyDefineCorrect = arr.hasOwnProperty("0");
 
-var verifyConfigurable = false;
-delete arr[0];
-verifyConfigurable = arr.hasOwnProperty("0");
+verifyProperty(arr, "0", {
+  enumerable: true,
+  configurable: true,
+});
 
 assert.sameValue(typeof desc.set, "undefined", 'typeof desc.set');
-assert(propertyDefineCorrect, 'propertyDefineCorrect !== true');
 assert.sameValue(desc.get, getFunc, 'desc.get');
-assert.sameValue(verifyConfigurable, false, 'verifyConfigurable');
-assert(verifyEnumerable, 'verifyEnumerable !== true');
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-204.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-204.js
index ef679dcc11..1cddaa0ff7 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-204.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-204.js
@@ -39,6 +39,8 @@ if (arr.verifySetter !== 101) {
   throw new Test262Error('Expected arr.verifySetter === 101, actually ' + arr.verifySetter);
 }
 
-verifyNotConfigurable(arr, 0);
+verifyProperty(arr, "0", {
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-205.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-205.js
index 46d98ea0a0..1ebeaac1f8 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-205.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-205.js
@@ -42,8 +42,9 @@ verifyEqualTo(arr, "0", getFun());
 
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-206.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-206.js
index a322992ba4..30e0beb774 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-206.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-206.js
@@ -18,12 +18,12 @@ arr[0] = 101; // default value of attributes: writable: true, configurable: true
 Object.defineProperties(arr, {
   "0": {}
 });
-verifyEqualTo(arr, "0", 101);
 
-verifyWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 101,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-207.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-207.js
index 46d88c42e1..19ab6047b9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-207.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-207.js
@@ -34,8 +34,9 @@ verifyEqualTo(arr, "0", get_func());
 
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-208.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-208.js
index 7d7f6ae685..33b1beff19 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-208.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-208.js
@@ -24,12 +24,12 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyEqualTo(arr, "0", 100);
-
-verifyWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 100,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
+  
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-209.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-209.js
index 48d71fdc94..1935f25ea8 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-209.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-209.js
@@ -38,8 +38,9 @@ verifyEqualTo(arr, "0", get_func());
 
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-21.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-21.js
index 174de35bac..6f58cf7632 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-21.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-21.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "prop", 11);
-
-  verifyNotWritable(obj, "prop");
-
-  verifyNotEnumerable(obj, "prop");
-
-  verifyNotConfigurable(obj, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "prop", {
+  value: 11,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-210.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-210.js
index 5d74f4dfd0..2809a05d15 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-210.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-210.js
@@ -22,12 +22,12 @@ Object.defineProperties(arr, {
     value: undefined
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-211.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-211.js
index 163eb6c69f..f1f02085c9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-211.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-211.js
@@ -21,12 +21,12 @@ Object.defineProperties(arr, {
     value: null
   }
 });
-verifyEqualTo(arr, "0", null);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: null,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-212.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-212.js
index d6aa9bdf5b..7d32ce4958 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-212.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-212.js
@@ -22,12 +22,11 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyEqualTo(arr, "0", NaN);
-
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: NaN,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-213.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-213.js
index b9bff48f9d..000b189084 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-213.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-213.js
@@ -24,18 +24,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "0", -0);
-
-  verifyNotWritable(arr, "0");
-
-  verifyNotEnumerable(arr, "0");
-
-  verifyNotConfigurable(arr, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "0", {
+  value: -0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-214.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-214.js
index 356f64d1bd..934d03d507 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-214.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-214.js
@@ -24,18 +24,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "0", +0);
-
-  verifyNotWritable(arr, "0");
-
-  verifyNotEnumerable(arr, "0");
-
-  verifyNotConfigurable(arr, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "0", {
+  value: +0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-215.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-215.js
index ea5c1a2d3f..4cc0c47522 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-215.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-215.js
@@ -22,12 +22,12 @@ Object.defineProperties(arr, {
     value: 101
   }
 });
-verifyEqualTo(arr, "0", 101);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 101,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-216.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-216.js
index b658b05038..bda83e12a4 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-216.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-216.js
@@ -22,12 +22,12 @@ Object.defineProperties(arr, {
     value: "abcd"
   }
 });
-verifyEqualTo(arr, "0", "abcd");
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: "abcd",
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-217.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-217.js
index 94e975a2cb..cf81d69f53 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-217.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-217.js
@@ -22,12 +22,12 @@ Object.defineProperties(arr, {
     value: true
   }
 });
-verifyEqualTo(arr, "0", true);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: true,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-218.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-218.js
index 9fefdec9a6..c8998fdd88 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-218.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-218.js
@@ -27,12 +27,12 @@ var properties = {
 };
 
 Object.defineProperties(arr, properties);
-verifyEqualTo(arr, "0", obj1);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: obj1,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-219.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-219.js
index 50afb5f2b0..7e53f2f81f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-219.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-219.js
@@ -21,12 +21,12 @@ Object.defineProperties(arr, {
     writable: true
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: true,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-220.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-220.js
index e655774ae2..b6a031738f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-220.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-220.js
@@ -22,12 +22,12 @@ Object.defineProperties(arr, {
     writable: false
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-221.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-221.js
index f3d107084e..a2ee179aba 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-221.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-221.js
@@ -28,8 +28,9 @@ Object.defineProperties(arr, {
 });
 verifyEqualTo(arr, "0", get_func());
 
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-222.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-222.js
index b9f60bdb8f..eaaf719083 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-222.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-222.js
@@ -28,8 +28,9 @@ Object.defineProperties(arr, {
 });
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-223.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-223.js
index 25c4ab4089..f66435c528 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-223.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-223.js
@@ -21,12 +21,12 @@ Object.defineProperties(arr, {
     enumerable: true
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyNotWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-224.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-224.js
index 127f8f89dd..e27cf9f8dd 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-224.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-224.js
@@ -22,12 +22,12 @@ Object.defineProperties(arr, {
     enumerable: false
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-225.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-225.js
index 9db9a3514d..ecd4214862 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-225.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-225.js
@@ -21,12 +21,12 @@ Object.defineProperties(arr, {
     configurable: true
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-226.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-226.js
index 0b839c70e3..783378d959 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-226.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-226.js
@@ -21,12 +21,12 @@ Object.defineProperties(arr, {
     configurable: false
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyNotWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-227.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-227.js
index 7e0a0eb3b8..2df44c3abe 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-227.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-227.js
@@ -27,18 +27,16 @@ try {
     }
   });
 } catch (e) {
-  verifyEqualTo(arr, "1", 3);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: 3,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-228.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-228.js
index ae93f23bb1..66fcadb131 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-228.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-228.js
@@ -31,18 +31,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", 3);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: 3,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-229.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-229.js
index 52eeb0b5ef..08df4167f5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-229.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-229.js
@@ -35,14 +35,14 @@ try {
 } catch (e) {
   verifyWritable(arr, "1", "setVerifyHelpProp");
 
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-230.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-230.js
index 70c1ebbcab..5b385533ed 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-230.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-230.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", 3);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: 3,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-231.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-231.js
index 77e43c731c..58ab02eb54 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-231.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-231.js
@@ -27,8 +27,9 @@ Object.defineProperties(arr, {
 
 verifyWritable(arr, "1", "setVerifyHelpProp");
 
-verifyEnumerable(arr, "1");
-
-verifyConfigurable(arr, "1");
+verifyProperty(arr, "1", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-232.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-232.js
index a8f2187f8c..f585634fa1 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-232.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-232.js
@@ -28,12 +28,11 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyEqualTo(arr, "1", 12);
-
-verifyNotWritable(arr, "1");
-
-verifyNotEnumerable(arr, "1");
-
-verifyConfigurable(arr, "1");
+verifyProperty(arr, "1", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-233.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-233.js
index cc3247a9c7..5aa8ecd912 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-233.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-233.js
@@ -30,18 +30,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", undefined);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-234.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-234.js
index 668e02eb0f..15279c0e89 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-234.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-234.js
@@ -32,18 +32,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", 3);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: 3,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-235.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-235.js
index a4becc4796..63526b84e9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-235.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-235.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", +0);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: +0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-236.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-236.js
index 7a76261002..8ccd912ed0 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-236.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-236.js
@@ -27,18 +27,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", -0);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: -0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-237.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-237.js
index 9914b27c44..5332d11ce9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-237.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-237.js
@@ -28,18 +28,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", 12);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-238.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-238.js
index 5928b5b299..5e6177b726 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-238.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-238.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", "abcd");
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: "abcd",
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-239.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-239.js
index e27cf66f6e..a696416afe 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-239.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-239.js
@@ -28,18 +28,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", true);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: true,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-24.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-24.js
index f57eb5d1db..8b95fea263 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-24.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-24.js
@@ -24,13 +24,12 @@ Object.defineProperties(this, {
   }
 });
 
-verifyEqualTo(this, "prop", 12);
-
-verifyWritable(this, "prop");
-
-verifyEnumerable(this, "prop");
-
-verifyConfigurable(this, "prop");
+verifyProperty(this, "prop", {
+  value: 12,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 delete this.prop;
 
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-240.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-240.js
index 3e22e8bf14..ce8c4c36a6 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-240.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-240.js
@@ -34,18 +34,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "1", obj1);
-
-  verifyNotWritable(arr, "1");
-
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  value: obj1,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-241.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-241.js
index 6167a6ee64..17bb7efd40 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-241.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-241.js
@@ -34,14 +34,14 @@ try {
 } catch (e) {
   verifyWritable(arr, "1", "setVerifyHelpProp");
 
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-242.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-242.js
index a794b04f0d..937341c5a5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-242.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-242.js
@@ -33,14 +33,14 @@ try {
 } catch (e) {
   verifyWritable(arr, "1", "setVerifyHelpProp");
 
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-243.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-243.js
index 4f8ba301c4..9f1b7a70a2 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-243.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-243.js
@@ -25,8 +25,9 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyNotEnumerable(arr, "1");
-
-verifyNotConfigurable(arr, "1");
+verifyProperty(arr, "1", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-244.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-244.js
index 12d578b86f..4b7394ea5b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-244.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-244.js
@@ -36,14 +36,14 @@ try {
 } catch (e) {
   verifyEqualTo(arr, "1", get_fun());
 
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-245.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-245.js
index 046fc367f8..bb8670ee80 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-245.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-245.js
@@ -32,14 +32,14 @@ try {
 } catch (e) {
   verifyEqualTo(arr, "1", get_fun());
 
-  verifyNotEnumerable(arr, "1");
-
-  verifyNotConfigurable(arr, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "1", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-246.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-246.js
index f7bd329a1e..193596163a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-246.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-246.js
@@ -26,8 +26,9 @@ Object.defineProperties(arr, {
   }
 });
 
-verifyNotEnumerable(arr, "1");
-
-verifyNotConfigurable(arr, "1");
+verifyProperty(arr, "1", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-247.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-247.js
index f597aaf1af..99151a6eb0 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-247.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-247.js
@@ -19,12 +19,12 @@ Object.defineProperties(arr, {
     value: 36
   }
 });
-verifyEqualTo(arr, "0", 36);
 
-verifyWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 36,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-248.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-248.js
index 547713544d..a5ec7a2b73 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-248.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-248.js
@@ -19,12 +19,12 @@ Object.defineProperties(arr, {
     value: undefined
   }
 });
-verifyEqualTo(arr, "0", undefined);
 
-verifyWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: undefined,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-249.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-249.js
index 36907737c5..8a3179cc5b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-249.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-249.js
@@ -19,12 +19,12 @@ Object.defineProperties(arr, {
     value: 12
   }
 });
-verifyEqualTo(arr, "0", 12);
 
-verifyWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 12,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-250.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-250.js
index f247cfd64b..5332c7076e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-250.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-250.js
@@ -19,12 +19,12 @@ Object.defineProperties(arr, {
     writable: false
   }
 });
-verifyEqualTo(arr, "0", 100);
 
-verifyNotWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 100,
+  writable: false,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-251.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-251.js
index d8e2e29bf4..1ffc966b9f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-251.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-251.js
@@ -19,12 +19,12 @@ Object.defineProperties(arr, {
     enumerable: false
   }
 });
-verifyEqualTo(arr, "0", 12);
 
-verifyWritable(arr, "0");
-
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 12,
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-252.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-252.js
index c74dba3fb4..dea3971ab4 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-252.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-252.js
@@ -19,12 +19,12 @@ Object.defineProperties(arr, {
     configurable: false
   }
 });
-verifyEqualTo(arr, "0", 12);
 
-verifyWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 12,
+  writable: true,
+  enumerable: true,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-253.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-253.js
index bec2effb09..4ec4199c2a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-253.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-253.js
@@ -21,12 +21,12 @@ Object.defineProperties(arr, {
     configurable: false
   }
 });
-verifyEqualTo(arr, "0", 36);
 
-verifyNotWritable(arr, "0");
-
-verifyEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  value: 36,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-254.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-254.js
index 5ff7603393..52dfbc2240 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-254.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-254.js
@@ -32,8 +32,9 @@ Object.defineProperties(arr, {
 });
 verifyEqualTo(arr, "0", get_fun());
 
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-255.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-255.js
index ca5c0bb33f..e10cec2a3f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-255.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-255.js
@@ -26,8 +26,10 @@ Object.defineProperties(arr, {
     get: undefined
   }
 });
-verifyNotEnumerable(arr, "0");
 
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-256.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-256.js
index 5f2eec519b..5578340283 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-256.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-256.js
@@ -30,8 +30,9 @@ Object.defineProperties(arr, {
 });
 verifyEqualTo(arr, "0", get_fun());
 
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-257.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-257.js
index 24ebf36025..6400a30657 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-257.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-257.js
@@ -30,8 +30,9 @@ Object.defineProperties(arr, {
 });
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-258.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-258.js
index 0cb48c5eb7..45d2f9322b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-258.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-258.js
@@ -24,8 +24,10 @@ Object.defineProperties(arr, {
     set: undefined
   }
 });
-verifyNotEnumerable(arr, "0");
 
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-259.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-259.js
index 0e846489aa..9ea293761b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-259.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-259.js
@@ -29,8 +29,9 @@ Object.defineProperties(arr, {
 });
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-260.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-260.js
index 62e09ab0f2..441fd014bf 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-260.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-260.js
@@ -30,8 +30,9 @@ Object.defineProperties(arr, {
 });
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arr, "0");
-
-verifyConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-261.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-261.js
index 3a4aeaac10..a89d450ef1 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-261.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-261.js
@@ -29,8 +29,9 @@ Object.defineProperties(arr, {
 });
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-262.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-262.js
index ee319f6ff2..6ba5bf8bfc 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-262.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-262.js
@@ -41,8 +41,9 @@ verifyEqualTo(arr, "0", get_fun());
 
 verifyWritable(arr, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arr, "0");
-
-verifyNotConfigurable(arr, "0");
+verifyProperty(arr, "0", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-266.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-266.js
index 689bec9b21..a81edc844e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-266.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-266.js
@@ -22,13 +22,13 @@ Object.defineProperties(arr, {
     configurable: true
   }
 });
-verifyEqualTo(arr, "property", 12);
 
-verifyWritable(arr, "property");
-
-verifyEnumerable(arr, "property");
-
-verifyConfigurable(arr, "property");
+verifyProperty(arr, "property", {
+  value: 12,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 if (arr.length !== 0) {
   throw new Test262Error('Expected arr.length === 0, actually ' + arr.length);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-267.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-267.js
index c81aad2b3f..293f8f33a6 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-267.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-267.js
@@ -33,9 +33,10 @@ verifyEqualTo(arr, "property", get_fun());
 
 verifyWritable(arr, "property", "setVerifyHelpProp");
 
-verifyEnumerable(arr, "property");
-
-verifyConfigurable(arr, "property");
+verifyProperty(arr, "property", {
+  enumerable: true,
+  configurable: true,
+});
 
 if (arr.length !== 0) {
   throw new Test262Error('Expected arr.length === 0, actually ' + arr.length);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-268.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-268.js
index 3f27c8552a..6ef189d40f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-268.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-268.js
@@ -38,8 +38,9 @@ verifyEqualTo(arr, "property", get_fun());
 
 verifyWritable(arr, "property", "verifySetFun");
 
-verifyNotEnumerable(arr, "property");
-
-verifyConfigurable(arr, "property");
+verifyProperty(arr, "property", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-269.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-269.js
index 217cd5b052..24d9bf430e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-269.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-269.js
@@ -21,13 +21,13 @@ Object.defineProperties(arr, {
     configurable: false
   }
 });
-verifyEqualTo(arr, "property", 12);
 
-verifyNotWritable(arr, "property");
-
-verifyNotEnumerable(arr, "property");
-
-verifyNotConfigurable(arr, "property");
+verifyProperty(arr, "property", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 if (arr.length !== 0) {
   throw new Test262Error('Expected arr.length === 0, actually ' + arr.length);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-270.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-270.js
index 1fb83b1df8..2750ef8cbd 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-270.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-270.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "property", 12);
-
-  verifyNotWritable(arr, "property");
-
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-271.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-271.js
index 01af4ede13..9ebe3f3c87 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-271.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-271.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "property", undefined);
-
-  verifyNotWritable(arr, "property");
-
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-272.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-272.js
index 1235a3604d..8bff8fee16 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-272.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-272.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "property", 12);
-
-  verifyNotWritable(arr, "property");
-
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-273.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-273.js
index 9d8807a77f..0108cff387 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-273.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-273.js
@@ -26,18 +26,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arr, "property", 12);
-
-  verifyNotWritable(arr, "property");
-
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-274.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-274.js
index 87b8c4cb9a..0cab0ced4b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-274.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-274.js
@@ -39,14 +39,14 @@ try {
 
   verifyWritable(arr, "property", "verifySetFun");
 
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-275.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-275.js
index 73a3eb6ff6..7a13d69ddc 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-275.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-275.js
@@ -30,14 +30,14 @@ try {
 } catch (e) {
   verifyWritable(arr, "property", "setVerifyHelpProp");
 
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-276.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-276.js
index 4f44eedb27..cc4b257824 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-276.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-276.js
@@ -32,14 +32,14 @@ try {
 } catch (e) {
   verifyWritable(arr, "property", "setVerifyHelpProp");
 
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-277.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-277.js
index 6015feab01..88cd60fb56 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-277.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-277.js
@@ -32,14 +32,14 @@ try {
 } catch (e) {
   verifyWritable(arr, "property", "setVerifyHelpProp");
 
-  verifyNotEnumerable(arr, "property");
-
-  verifyNotConfigurable(arr, "property");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arr, "property", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-278.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-278.js
index ee646acae0..380cbf887c 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-278.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-278.js
@@ -30,12 +30,11 @@ Object.defineProperties(arg, {
   }
 });
 
-verifyEqualTo(arg, "0", 10);
-
-verifyWritable(arg, "0");
-
-verifyEnumerable(arg, "0");
-
-verifyConfigurable(arg, "0");
+verifyProperty(arg, "0", {
+  value: 10,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-279.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-279.js
index 69aff91049..a225f9458f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-279.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-279.js
@@ -42,8 +42,9 @@ verifyEqualTo(arg, "0", get_func());
 
 verifyWritable(arg, "0", "setVerifyHelpProp");
 
-verifyEnumerable(arg, "0");
-
-verifyConfigurable(arg, "0");
+verifyProperty(arg, "0", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-28.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-28.js
index 1b1b00f14b..f46733e9b5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-28.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-28.js
@@ -18,14 +18,9 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyNotWritable(obj, "prop");
-
-if (!obj.hasOwnProperty("prop")) {
-  throw new Test262Error('Expected obj.hasOwnProperty("prop") to be true, actually ' + obj.hasOwnProperty("prop"));
-}
-
-if (obj.prop !== 1001) {
-  throw new Test262Error('Expected obj.prop === 1001, actually ' + obj.prop);
-}
+verifyProperty(obj, "prop", {
+  value: 1001,
+  writable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-281.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-281.js
index 4df7240d9c..87f70353e5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-281.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-281.js
@@ -27,12 +27,11 @@ Object.defineProperties(arg, {
   }
 });
 
-verifyEqualTo(arg, "0", 20);
-
-verifyNotWritable(arg, "0");
-
-verifyNotEnumerable(arg, "0");
-
-verifyNotConfigurable(arg, "0");
+verifyProperty(arg, "0", {
+  value: 20,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-282.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-282.js
index 11d6e36781..10322f5329 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-282.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-282.js
@@ -34,18 +34,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-283.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-283.js
index 8ac9b4f704..ccdf040553 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-283.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-283.js
@@ -35,18 +35,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyNotEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-284.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-284.js
index 9fed19833a..6a449ac3d9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-284.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-284.js
@@ -35,18 +35,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-285.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-285.js
index a22f1a59ba..b375ce09a4 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-285.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-285.js
@@ -35,18 +35,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyNotEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-288.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-288.js
index a5a2feeecd..bb2843f668 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-288.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-288.js
@@ -40,14 +40,14 @@ try {
 } catch (e) {
   verifyEqualTo(arg, "0", get_func());
 
-  verifyEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-289.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-289.js
index 58daa19af6..b6ce95181d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-289.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-289.js
@@ -40,14 +40,14 @@ try {
 } catch (e) {
   verifyEqualTo(arg, "0", get_func());
 
-  verifyEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-290.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-290.js
index f03e73674a..0b8e42adfe 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-290.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-290.js
@@ -30,12 +30,11 @@ Object.defineProperties(arg, {
   }
 });
 
-verifyEqualTo(arg, "0", 10);
-
-verifyNotWritable(arg, "0");
-
-verifyNotEnumerable(arg, "0");
-
-verifyNotConfigurable(arg, "0");
+verifyProperty(arg, "0", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-291.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-291.js
index 1319ec70c2..db6f500445 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-291.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-291.js
@@ -42,8 +42,9 @@ verifyEqualTo(arg, "0", get_func());
 
 verifyWritable(arg, "0", "setVerifyHelpProp");
 
-verifyNotEnumerable(arg, "0");
-
-verifyNotConfigurable(arg, "0");
+verifyProperty(arg, "0", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-292.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-292.js
index a03cfd2060..b46f0bc120 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-292.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-292.js
@@ -43,8 +43,9 @@ Object.defineProperties(arg, {
 
 verifyEqualTo(arg, "0", get_func2());
 
-verifyNotEnumerable(arg, "0");
-
-verifyNotConfigurable(arg, "0");
+verifyProperty(arg, "0", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-293.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-293.js
index 5d9589888b..7267e28935 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-293.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-293.js
@@ -28,12 +28,11 @@ Object.defineProperties(arg, {
   }
 });
 
-verifyEqualTo(arg, "0", 20);
-
-verifyNotWritable(arg, "0");
-
-verifyNotEnumerable(arg, "0");
-
-verifyNotConfigurable(arg, "0");
+verifyProperty(arg, "0", {
+  value: 20,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-294.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-294.js
index e1af163e2b..efa1e26fb6 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-294.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-294.js
@@ -34,18 +34,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyNotEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-295.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-295.js
index 995e695b60..e6fc9e9422 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-295.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-295.js
@@ -35,18 +35,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyNotEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-296.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-296.js
index d63b6abd7c..ee14307684 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-296.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-296.js
@@ -35,18 +35,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-297.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-297.js
index 85a07ad038..d647c69fc9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-297.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-297.js
@@ -35,18 +35,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "0", 0);
-
-  verifyNotWritable(arg, "0");
-
-  verifyNotEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  value: 0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-298.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-298.js
index 2bb794f123..82f75ed8d5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-298.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-298.js
@@ -42,14 +42,14 @@ try {
 } catch (e) {
   verifyEqualTo(arg, "0", get_func1());
 
-  verifyNotEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-299.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-299.js
index 2e59611209..f3cf964f13 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-299.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-299.js
@@ -43,14 +43,14 @@ try {
 } catch (e) {
   verifyEqualTo(arg, "0", get_func());
 
-  verifyNotEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-30.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-30.js
index bba5d89ff4..580dcaf3da 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-30.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-30.js
@@ -19,14 +19,9 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyNotConfigurable(obj, "prop");
-
-if (!obj.hasOwnProperty("prop")) {
-  throw new Test262Error('Expected obj.hasOwnProperty("prop") to be true, actually ' + obj.hasOwnProperty("prop"));
-}
-
-if (obj.prop !== 1001) {
-  throw new Test262Error('Expected obj.prop === 1001, actually ' + obj.prop);
-}
+verifyProperty(obj, "prop", {
+  value: 1001,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-300.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-300.js
index 7c10d4efa7..4eb41d999f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-300.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-300.js
@@ -39,14 +39,14 @@ try {
 } catch (e) {
   verifyEqualTo(arg, "0", get_func());
 
-  verifyEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-301.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-301.js
index 607a3a746d..1dc7c3747d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-301.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-301.js
@@ -39,14 +39,14 @@ try {
 } catch (e) {
   verifyEqualTo(arg, "0", get_func());
 
-  verifyEnumerable(arg, "0");
-
-  verifyNotConfigurable(arg, "0");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "0", {
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-302.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-302.js
index 16f710cd40..3e5bee3cc9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-302.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-302.js
@@ -24,12 +24,11 @@ Object.defineProperties(arg, {
   }
 });
 
-verifyEqualTo(arg, "genericProperty", 1001);
-
-verifyWritable(arg, "genericProperty");
-
-verifyEnumerable(arg, "genericProperty");
-
-verifyConfigurable(arg, "genericProperty");
+verifyProperty(arg, "genericProperty", {
+  value: 1001,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-303.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-303.js
index f3f32aab1c..91719ca75f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-303.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-303.js
@@ -35,8 +35,9 @@ verifyEqualTo(arg, "genericProperty", getFun());
 
 verifyWritable(arg, "genericProperty", "testGetFunction");
 
-verifyEnumerable(arg, "genericProperty");
-
-verifyConfigurable(arg, "genericProperty");
+verifyProperty(arg, "genericProperty", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-304.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-304.js
index e5168c7d84..955fc46f5a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-304.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-304.js
@@ -46,8 +46,9 @@ verifyEqualTo(arg, "genericProperty", getFun());
 
 verifyWritable(arg, "genericProperty", "testGetFunction");
 
-verifyNotEnumerable(arg, "genericProperty");
-
-verifyNotConfigurable(arg, "genericProperty");
+verifyProperty(arg, "genericProperty", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-305.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-305.js
index 4863298678..2c8528dee0 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-305.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-305.js
@@ -30,12 +30,11 @@ Object.defineProperties(arg, {
   }
 });
 
-verifyEqualTo(arg, "genericProperty", 1002);
-
-verifyWritable(arg, "genericProperty");
-
-verifyNotEnumerable(arg, "genericProperty");
-
-verifyNotConfigurable(arg, "genericProperty");
+verifyProperty(arg, "genericProperty", {
+  value: 1002,
+  writable: true,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-306.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-306.js
index 5674c28b7d..7fa55bce0e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-306.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-306.js
@@ -30,18 +30,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "genericProperty", 1001);
-
-  verifyNotWritable(arg, "genericProperty");
-
-  verifyNotEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  value: 1001,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-307.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-307.js
index f1294cc7e8..7b6840796d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-307.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-307.js
@@ -29,18 +29,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "genericProperty", undefined);
-
-  verifyNotWritable(arg, "genericProperty");
-
-  verifyNotEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-308.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-308.js
index f905ee306c..49be313a95 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-308.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-308.js
@@ -29,18 +29,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "genericProperty", undefined);
-
-  verifyNotWritable(arg, "genericProperty");
-
-  verifyEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  value: undefined,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-309.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-309.js
index fc7e123d7a..20e70b72df 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-309.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-309.js
@@ -28,18 +28,16 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(arg, "genericProperty", undefined);
-
-  verifyNotWritable(arg, "genericProperty");
-
-  verifyNotEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-31.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-31.js
index 3e0d7399be..1cc9e68036 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-31.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-31.js
@@ -19,12 +19,12 @@ Object.defineProperties(obj, {
     configurable: false
   }
 });
-verifyEqualTo(obj, "prop", 1002);
 
-verifyNotWritable(obj, "prop");
-
-verifyNotEnumerable(obj, "prop");
-
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  value: 1002,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-310.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-310.js
index a62ee445a7..51326cbe7f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-310.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-310.js
@@ -43,14 +43,14 @@ try {
 
   verifyWritable(arg, "genericProperty", "verifySetFun");
 
-  verifyNotEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-311.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-311.js
index b5fd0b53f7..e43c360b87 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-311.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-311.js
@@ -36,14 +36,14 @@ try {
 } catch (e) {
   verifyWritable(arg, "genericProperty", "genericPropertyString");
 
-  verifyNotEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-312.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-312.js
index a890c971e3..1612b14adb 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-312.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-312.js
@@ -35,14 +35,14 @@ try {
 } catch (e) {
   verifyWritable(arg, "genericProperty", "genericPropertyString");
 
-  verifyEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-313.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-313.js
index 8a0992330e..aa51e97ee2 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-313.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-313.js
@@ -34,14 +34,14 @@ try {
 } catch (e) {
   verifyWritable(arg, "genericProperty", "genericPropertyString");
 
-  verifyNotEnumerable(arg, "genericProperty");
-
-  verifyNotConfigurable(arg, "genericProperty");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(arg, "genericProperty", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-33.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-33.js
index c1c992a90d..25c528e02d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-33.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-33.js
@@ -24,8 +24,9 @@ Object.defineProperties(obj, {
 });
 verifyWritable(obj, "prop", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "prop");
-
-verifyConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-35.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-35.js
index 5ec06c05ef..394f63ff5f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-35.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-35.js
@@ -29,8 +29,9 @@ verifyEqualTo(obj, "prop", getFun());
 
 verifyWritable(obj, "prop", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "prop");
-
-verifyConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-36.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-36.js
index cd1476eaea..7089f666f5 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-36.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-36.js
@@ -30,8 +30,9 @@ verifyEqualTo(obj, "prop", 10);
 
 verifyWritable(obj, "prop", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "prop");
-
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  enumerable: true,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-37.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-37.js
index afdb5a5709..466884a968 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-37.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-37.js
@@ -29,8 +29,9 @@ verifyEqualTo(obj, "prop", getFun());
 
 verifyWritable(obj, "prop", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "prop");
-
-verifyNotConfigurable(obj, "prop");
+verifyProperty(obj, "prop", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38-1.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38-1.js
index 97d92d286c..c5c609ad79 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38-1.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38-1.js
@@ -29,8 +29,9 @@ Object.defineProperties(obj, {
 
 verifyEqualTo(obj, "foo", getFunc());
 
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38.js
index d687d6345e..9bd8a38c7c 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-38.js
@@ -17,12 +17,12 @@ obj.foo = 100; // default value of attributes: writable: true, configurable: tru
 Object.defineProperties(obj, {
   foo: {}
 });
-verifyEqualTo(obj, "foo", 100);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 100,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-39.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-39.js
index 54c402d74f..ff7d19a48f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-39.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-39.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     configurable: true
   }
 });
-verifyEqualTo(obj, "foo", 101);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 101,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-40.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-40.js
index 6c0d2f2c8a..948a61d092 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-40.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-40.js
@@ -40,8 +40,9 @@ verifyEqualTo(obj, "foo", get_func());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-41.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-41.js
index f7d9be5dc4..a41d70fd83 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-41.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-41.js
@@ -19,12 +19,12 @@ Object.defineProperties(obj, {
     value: "102"
   }
 });
-verifyEqualTo(obj, "foo", "102");
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: "102",
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-42.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-42.js
index 26da7ca748..4971c08a34 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-42.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-42.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     value: undefined
   }
 });
-verifyEqualTo(obj, "foo", undefined);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-43.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-43.js
index f31e75dbed..53be56ca55 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-43.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-43.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     value: null
   }
 });
-verifyEqualTo(obj, "foo", null);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: null,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js
index ce699a71b2..895b21043b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js
@@ -23,8 +23,10 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyNotEnumerable(obj, "foo");
-verifyNotWritable(obj, "foo");
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-45.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-45.js
index 5738385a85..765e5e3226 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-45.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-45.js
@@ -25,18 +25,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", -0);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: -0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-46.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-46.js
index 5b7397c87e..3f57029fbc 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-46.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-46.js
@@ -25,18 +25,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", +0);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: +0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-47.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-47.js
index 3cbc638a8b..871d859a41 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-47.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-47.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     value: 101
   }
 });
-verifyEqualTo(obj, "foo", 101);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 101,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-48.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-48.js
index b3de13ed9d..eb530fdff3 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-48.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-48.js
@@ -19,12 +19,12 @@ Object.defineProperties(obj, {
     value: 102
   }
 });
-verifyEqualTo(obj, "foo", 102);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 102,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-49.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-49.js
index 5cb4ac2df9..73beacbde0 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-49.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-49.js
@@ -23,12 +23,12 @@ Object.defineProperties(obj, {
     value: "abcd"
   }
 });
-verifyEqualTo(obj, "foo", "abcd");
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: "abcd",
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-5.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-5.js
index 5893ad38d2..1cf2293e27 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-5.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-5.js
@@ -29,16 +29,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "prop", getFunc());
-
-  verifyNotEnumerable(obj, "prop");
-
-  verifyNotConfigurable(obj, "prop");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyEqualTo(obj, "prop", getFunc());
+
+verifyProperty(obj, "prop", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-50.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-50.js
index c4459a802e..2e7473cada 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-50.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-50.js
@@ -19,12 +19,12 @@ Object.defineProperties(obj, {
     value: "fghj"
   }
 });
-verifyEqualTo(obj, "foo", "fghj");
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: "fghj",
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-51.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-51.js
index eaeb92e3c7..cf927bc359 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-51.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-51.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     value: true
   }
 });
-verifyEqualTo(obj, "foo", true);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: true,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-52.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-52.js
index 294565851e..ad4217d829 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-52.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-52.js
@@ -19,12 +19,12 @@ Object.defineProperties(obj, {
     value: false
   }
 });
-verifyEqualTo(obj, "foo", false);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: false,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-53.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-53.js
index 47a8e4d761..d9a27c8f94 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-53.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-53.js
@@ -25,12 +25,12 @@ Object.defineProperties(obj, {
     value: obj1
   }
 });
-verifyEqualTo(obj, "foo", obj1);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: obj1,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-54.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-54.js
index 0c154f563f..b0fc54d4af 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-54.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-54.js
@@ -26,12 +26,12 @@ Object.defineProperties(obj, {
     value: obj2
   }
 });
-verifyEqualTo(obj, "foo", obj2);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: obj2,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-55.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-55.js
index 3db7ea5160..da79965576 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-55.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-55.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     writable: false
   }
 });
-verifyEqualTo(obj, "foo", undefined);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-56.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-56.js
index c5e8d07b24..8925a1c6a6 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-56.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-56.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     configurable: true
   }
 });
-verifyEqualTo(obj, "foo", undefined);
 
-verifyWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: undefined,
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js
index 07a9774921..f257a3fa8a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js
@@ -26,9 +26,11 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyNotEnumerable(obj, "foo");
 assert.sameValue(obj.foo, 10);
 
-verifyNotConfigurable(obj, "foo")
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-58.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-58.js
index c774825fb6..2bdb06848a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-58.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-58.js
@@ -6,6 +6,7 @@ es5id: 15.2.3.7-6-a-58
 description: >
     Object.defineProperties - desc.[[Get]] and P.[[Get]] are two
     objects which refer to the different objects (8.12.9 step 6)
+includes: [propertyHelper.js]
 ---*/
 
 var obj = {};
@@ -29,25 +30,15 @@ Object.defineProperties(obj, {
   }
 });
 
-var verifyEnumerable = false;
-for (var p in obj) {
-  if (p === "foo") {
-    verifyEnumerable = true;
-  }
-}
-
-var verifyValue = false;
-verifyValue = (obj.foo === 20);
+assert.sameValue(obj.foo, 20);
 
 var desc = Object.getOwnPropertyDescriptor(obj, "foo");
 
-var verifyConfigurable = false;
-delete obj.foo;
-verifyConfigurable = obj.hasOwnProperty("foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: true,
+});
 
-assert.sameValue(verifyConfigurable, false, 'verifyConfigurable');
-assert.sameValue(verifyEnumerable, false, 'verifyEnumerable');
-assert(verifyValue, 'verifyValue !== true');
 assert.sameValue(typeof(desc.set), "undefined", 'typeof (desc.set)');
 assert.sameValue(desc.get, get_Func2, 'desc.get');
 
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-59.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-59.js
index 55f0b6e98b..c6ef06f2f7 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-59.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-59.js
@@ -27,8 +27,9 @@ Object.defineProperties(obj, {
 });
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-60.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-60.js
index 18b3b08eff..654371c09d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-60.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-60.js
@@ -30,8 +30,9 @@ Object.defineProperties(obj, {
 });
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-61.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-61.js
index d6b97792f2..7bca98d769 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-61.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-61.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     enumerable: false
   }
 });
-verifyEqualTo(obj, "foo", 10);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-62.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-62.js
index 66707f734d..5e8478764f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-62.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-62.js
@@ -23,12 +23,12 @@ Object.defineProperties(obj, {
     enumerable: true
   }
 });
-verifyEqualTo(obj, "foo", 10);
 
-verifyNotWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-63.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-63.js
index d6bfa302ff..c88d34a3d9 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-63.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-63.js
@@ -23,12 +23,12 @@ Object.defineProperties(obj, {
     configurable: false
   }
 });
-verifyEqualTo(obj, "foo", 10);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-64.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-64.js
index fe97b64dd8..a2666ea4d3 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-64.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-64.js
@@ -22,12 +22,12 @@ Object.defineProperties(obj, {
     configurable: false
   }
 });
-verifyEqualTo(obj, "foo", 10);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-65.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-65.js
index c6678316fc..47811b7582 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-65.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-65.js
@@ -25,18 +25,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", 10);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66-1.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66-1.js
index dd97034520..ddabfa6957 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66-1.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66-1.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", 10);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66.js
index 6c1a70521e..7bbc90ac6e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-66.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", 10);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js
index 3980343982..3967859349 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js
@@ -31,11 +31,13 @@ try {
   throw new Test262Error("Expected TypeError");
 } catch (e) {
   assert(e instanceof TypeError);
-  verifyNotEnumerable(obj, "foo");
 
   assert.sameValue(obj.foo, 10);
 
-  verifyNotConfigurable(obj, "foo");
+  verifyProperty(obj, "foo", {
+    enumerable: false,
+    configurable: false,
+  });
 
   var desc = Object.getOwnPropertyDescriptor(obj, "foo");
 
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-68.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-68.js
index c2581e46bf..db5ed622cd 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-68.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-68.js
@@ -30,18 +30,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", 10);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-69.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-69.js
index 16f5527999..d94a669dd0 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-69.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-69.js
@@ -6,6 +6,7 @@ es5id: 15.2.3.7-6-a-69
 description: >
     Object.defineProperties - 'P' is data property and P.configurable
     is true, desc is accessor property (8.12.9 step 9.b.i)
+includes: [propertyHelper.js]
 ---*/
 
 var obj = {};
@@ -25,25 +26,15 @@ Object.defineProperties(obj, {
   }
 });
 
-var verifyEnumerable = false;
-for (var p in obj) {
-  if (p === "foo") {
-    verifyEnumerable = true;
-  }
-}
-
-var verifyValue = false;
-verifyValue = (obj.foo === 20);
+assert.sameValue(obj.foo, 20);
 
 var desc = Object.getOwnPropertyDescriptor(obj, "foo");
 
-var verifyConfigurable = true;
-delete obj.foo;
-verifyConfigurable = obj.hasOwnProperty("foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: true,
+});
 
-assert.sameValue(verifyConfigurable, false, 'verifyConfigurable');
-assert.sameValue(verifyEnumerable, false, 'verifyEnumerable');
-assert(verifyValue, 'verifyValue !== true');
 assert.sameValue(typeof desc.set, "undefined", 'typeof desc.set');
 assert.sameValue(desc.get, get_Func, 'desc.get');
 
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-70.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-70.js
index 2c19545d04..311d85dc1e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-70.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-70.js
@@ -27,12 +27,12 @@ Object.defineProperties(obj, {
     value: 12
   }
 });
-verifyEqualTo(obj, "foo", 12);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 12,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-71.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-71.js
index 6be29229ee..85d1d8192e 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-71.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-71.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", 10);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-72.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-72.js
index 3807bf9155..8db43b2aa2 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-72.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-72.js
@@ -28,18 +28,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", 10);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-73.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-73.js
index ec98b17976..4027fc5b41 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-73.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-73.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     value: undefined
   }
 });
-verifyEqualTo(obj, "foo", undefined);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: undefined,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-74.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-74.js
index 7efeaf287a..8bbcdbb240 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-74.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-74.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     value: null
   }
 });
-verifyEqualTo(obj, "foo", null);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: null,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js
index a1fe2653ec..b734bd9f6f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js
@@ -26,8 +26,10 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyNotEnumerable(obj, "foo");
-verifyNotWritable(obj, "foo");
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-76.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-76.js
index 1a1c1e02c0..6b6cddb15b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-76.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-76.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", -0);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: -0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-77.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-77.js
index 4be63a9fc3..f444cbee00 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-77.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-77.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", +0);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: +0,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-78.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-78.js
index 2752971e2e..fce755d9ea 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-78.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-78.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     value: 100
   }
 });
-verifyEqualTo(obj, "foo", 100);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 100,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-79.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-79.js
index a6533a918c..b0cddcd66f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-79.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-79.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", 10);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-80.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-80.js
index a7b91fa17b..bf1780dd56 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-80.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-80.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     value: "abcd"
   }
 });
-verifyEqualTo(obj, "foo", "abcd");
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: "abcd",
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-81.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-81.js
index a8b094a8e0..edc253f300 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-81.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-81.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", "abcd");
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: "abcd",
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-82.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-82.js
index e5d26c4acd..3d8b01d752 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-82.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-82.js
@@ -25,12 +25,12 @@ Object.defineProperties(obj, {
     value: false
   }
 });
-verifyEqualTo(obj, "foo", false);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: false,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-83.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-83.js
index 7e69ae863b..28625eebf8 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-83.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-83.js
@@ -27,18 +27,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", false);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: false,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84-1.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84-1.js
index 19c54b3883..b4f1985956 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84-1.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84-1.js
@@ -32,12 +32,12 @@ Object.defineProperties(obj, {
     value: obj2
   }
 });
-verifyEqualTo(obj, "foo", obj1);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: obj1,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84.js
index 0edfc761a9..873bfc248a 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-84.js
@@ -29,12 +29,12 @@ Object.defineProperties(obj, {
     value: obj1
   }
 });
-verifyEqualTo(obj, "foo", obj1);
 
-verifyNotWritable(obj, "foo");
-
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: obj1,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-85.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-85.js
index f9b41a56a4..10e7399cf1 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-85.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-85.js
@@ -35,18 +35,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "foo", obj1);
-
-  verifyNotWritable(obj, "foo");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  value: obj1,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86-1.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86-1.js
index 500986c18d..7b10abcdc2 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86-1.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86-1.js
@@ -34,16 +34,16 @@ try {
     }
   });
 } catch (e) {
-  verifyWritable(obj, "foo", "setVerifyHelpProp");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyWritable(obj, "foo", "setVerifyHelpProp");
+
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86.js
index a6f109dabd..b1ebcbc4dd 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-86.js
@@ -29,8 +29,10 @@ Object.defineProperties(obj, {
 });
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
 
-verifyNotConfigurable(obj, "foo");
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-87.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-87.js
index f1cee12ac7..b4e642bcdc 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-87.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-87.js
@@ -32,16 +32,16 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyWritable(obj, "foo", "setVerifyHelpProp");
-
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyWritable(obj, "foo", "setVerifyHelpProp");
+
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-88.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-88.js
index 12de5bbe14..5534a858b6 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-88.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-88.js
@@ -34,20 +34,20 @@ try {
   });
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-  var desc = Object.getOwnPropertyDescriptor(obj, "foo");
-
-  if (typeof(desc.set) !== "undefined") {
-    throw new Test262Error('Expected typeof (desc.set) === "undefined", actually ' + typeof(desc.set));
-  }
-
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
+}
+
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
+
+var desc = Object.getOwnPropertyDescriptor(obj, "foo");
 
+if (typeof(desc.set) !== "undefined") {
+  throw new Test262Error('Expected typeof (desc.set) === "undefined", actually ' + typeof(desc.set));
 }
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-89.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-89.js
index ae7c1d6aa4..f8cf6dc904 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-89.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-89.js
@@ -30,9 +30,10 @@ Object.defineProperties(obj, {
   }
 });
 
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
 
 var desc = Object.getOwnPropertyDescriptor(obj, "foo");
 
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-90.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-90.js
index 4a7b37c5b0..a6c7d008c1 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-90.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-90.js
@@ -37,8 +37,9 @@ verifyEqualTo(obj, "foo", get_func());
 
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-91.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-91.js
index 77f1b0a61c..94a43927be 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-91.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-91.js
@@ -44,14 +44,14 @@ try {
 
   verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-92.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-92.js
index 8a79bf19b1..f17c0e9826 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-92.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-92.js
@@ -38,14 +38,14 @@ try {
 } catch (e) {
   verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-  verifyNotEnumerable(obj, "foo");
-
-  verifyNotConfigurable(obj, "foo");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-1.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-1.js
index 14f8f294c5..702cfc7abd 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-1.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-1.js
@@ -38,25 +38,23 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "property", 1002);
-
-  verifyNotWritable(obj, "property");
-
-  verifyNotEnumerable(obj, "property");
-
-  verifyConfigurable(obj, "property");
-  verifyEqualTo(obj, "property1", 1003);
-
-  verifyNotWritable(obj, "property1");
-
-  verifyNotEnumerable(obj, "property1");
-
-  verifyNotConfigurable(obj, "property1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "property", {
+  value: 1002,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+verifyProperty(obj, "property1", {
+  value: 1003,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-2.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-2.js
index 3426413f72..c3651d96a6 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-2.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-2.js
@@ -38,25 +38,23 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "0", 1002);
-
-  verifyNotWritable(obj, "0");
-
-  verifyNotEnumerable(obj, "0");
-
-  verifyConfigurable(obj, "0");
-  verifyEqualTo(obj, "1", 1003);
-
-  verifyNotWritable(obj, "1");
-
-  verifyNotEnumerable(obj, "1");
-
-  verifyNotConfigurable(obj, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "0", {
+  value: 1002,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+verifyProperty(obj, "1", {
+  value: 1003,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-3.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-3.js
index 927d25a004..9ae84e271d 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-3.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-3.js
@@ -37,26 +37,23 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "property", 1001);
-
-  verifyNotWritable(obj, "property");
-
-  verifyNotEnumerable(obj, "property");
-
-  verifyNotConfigurable(obj, "property");
-
-  verifyEqualTo(obj, "property1", 1003);
-
-  verifyNotWritable(obj, "property1");
-
-  verifyNotEnumerable(obj, "property1");
-
-  verifyConfigurable(obj, "property1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "property", {
+  value: 1001,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
+verifyProperty(obj, "property1", {
+  value: 1003,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-4.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-4.js
index 7d6548ea1d..53ff196de0 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-4.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93-4.js
@@ -37,25 +37,23 @@ try {
 
   throw new Test262Error("Expected an exception.");
 } catch (e) {
-  verifyEqualTo(obj, "0", 1001);
-
-  verifyNotWritable(obj, "0");
-
-  verifyNotEnumerable(obj, "0");
-
-  verifyNotConfigurable(obj, "0");
-  verifyEqualTo(obj, "1", 1003);
-
-  verifyNotWritable(obj, "1");
-
-  verifyNotEnumerable(obj, "1");
-
-  verifyConfigurable(obj, "1");
-
   if (!(e instanceof TypeError)) {
     throw new Test262Error("Expected TypeError, got " + e);
   }
-
 }
 
+verifyProperty(obj, "0", {
+  value: 1001,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
+verifyProperty(obj, "1", {
+  value: 1003,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93.js
index cbfc06a190..3c53e641cc 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-93.js
@@ -31,8 +31,9 @@ Object.defineProperties(obj, {
 });
 verifyWritable(obj, "foo", "setVerifyHelpProp");
 
-verifyNotEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: false,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-94.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-94.js
index 8f97c40e12..7eeef1842b 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-94.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-94.js
@@ -19,12 +19,12 @@ Object.defineProperties(obj, {
     value: 200
   }
 });
-verifyEqualTo(obj, "foo", 200);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 200,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-95.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-95.js
index b89ec12636..fed250c3a3 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-95.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-95.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     value: undefined
   }
 });
-verifyEqualTo(obj, "foo", undefined);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: undefined,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-96.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-96.js
index cecec30eb2..06d55a0c5f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-96.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-96.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     value: 200
   }
 });
-verifyEqualTo(obj, "foo", 200);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 200,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-97.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-97.js
index 830402f265..23461d6227 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-97.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-97.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     writable: true
   }
 });
-verifyEqualTo(obj, "foo", 100);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 100,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-98.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-98.js
index c45c0b3582..938e2a7b17 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-98.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-98.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     enumerable: true
   }
 });
-verifyEqualTo(obj, "foo", 200);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 200,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-99.js b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-99.js
index 8dee2771e6..a91c0ab91f 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-99.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/15.2.3.7-6-a-99.js
@@ -24,12 +24,12 @@ Object.defineProperties(obj, {
     configurable: false
   }
 });
-verifyEqualTo(obj, "foo", 200);
 
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 200,
+  writable: true,
+  enumerable: true,
+  configurable: false,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/name.js b/js/src/tests/test262/built-ins/Object/defineProperties/name.js
index 64e4c0c4c2..2a9d5c9fbe 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/name.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/name.js
@@ -19,10 +19,11 @@ info: |
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Object.defineProperties.name, "defineProperties");
-
-verifyNotEnumerable(Object.defineProperties, "name");
-verifyNotWritable(Object.defineProperties, "name");
-verifyConfigurable(Object.defineProperties, "name");
+verifyProperty(Object.defineProperties, "name", {
+  value: "defineProperties",
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/defineProperties/not-a-constructor.js b/js/src/tests/test262/built-ins/Object/defineProperties/not-a-constructor.js
index 7987b575ff..151dd2d509 100644
--- a/js/src/tests/test262/built-ins/Object/defineProperties/not-a-constructor.js
+++ b/js/src/tests/test262/built-ins/Object/defineProperties/not-a-constructor.js
@@ -29,7 +29,7 @@ assert.sameValue(
 
 assert.throws(TypeError, () => {
   new Object.defineProperties({}, {});
-}, '`new Object.defineProperties({}, {})` throws TypeError');
+});
 
 
 reportCompare(0, 0);