1 files changed, 86 insertions, 0 deletions
diff --git a/js/src/tests/non262/object/isPrototypeOf.js b/js/src/tests/non262/object/isPrototypeOf.js
new file mode 100644
index 0000000000..a2d78f6507
--- /dev/null
+++ b/js/src/tests/non262/object/isPrototypeOf.js
@@ -0,0 +1,86 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var gTestfile = 'isPrototypeOf.js';
+var BUGNUMBER = 619283;
+var summary = "Object.prototype.isPrototypeOf";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+function expectThrowTypeError(fun)
+{
+  try
+  {
+    var r = fun();
+    throw new Error("didn't throw TypeError, returned " + r);
+  }
+  catch (e)
+  {
+    assertEq(e instanceof TypeError, true,
+             "didn't throw TypeError, got: " + e);
+  }
+}
+
+var isPrototypeOf = Object.prototype.isPrototypeOf;
+
+/*
+ * 1. If V is not an Object, return false.
+ */
+assertEq(isPrototypeOf(), false);
+assertEq(isPrototypeOf(1), false);
+assertEq(isPrototypeOf(Number.MAX_VALUE), false);
+assertEq(isPrototypeOf(NaN), false);
+assertEq(isPrototypeOf(""), false);
+assertEq(isPrototypeOf("sesquicentennial"), false);
+assertEq(isPrototypeOf(true), false);
+assertEq(isPrototypeOf(false), false);
+assertEq(isPrototypeOf(0.72), false);
+assertEq(isPrototypeOf(undefined), false);
+assertEq(isPrototypeOf(null), false);
+
+
+/*
+ * 2. Let O be the result of calling ToObject passing the this value as the
+ *    argument.
+ */
+var protoGlobal = Object.create(this);
+expectThrowTypeError(function() { isPrototypeOf.call(null, {}); });
+expectThrowTypeError(function() { isPrototypeOf.call(undefined, {}); });
+expectThrowTypeError(function() { isPrototypeOf({}); });
+expectThrowTypeError(function() { isPrototypeOf.call(null, protoGlobal); });
+expectThrowTypeError(function() { isPrototypeOf.call(undefined, protoGlobal); });
+expectThrowTypeError(function() { isPrototypeOf(protoGlobal); });
+
+
+/*
+ * 3. Repeat
+ */
+
+/*
+ * 3a. Let V be the value of the [[Prototype]] internal property of V.
+ * 3b. If V is null, return false.
+ */
+assertEq(Object.prototype.isPrototypeOf(Object.prototype), false);
+assertEq(String.prototype.isPrototypeOf({}), false);
+assertEq(Object.prototype.isPrototypeOf(Object.create(null)), false);
+
+/* 3c. If O and V refer to the same object, return true. */
+assertEq(Object.prototype.isPrototypeOf({}), true);
+assertEq(this.isPrototypeOf(protoGlobal), true);
+assertEq(Object.prototype.isPrototypeOf({}), true);
+assertEq(Object.prototype.isPrototypeOf(new Number(17)), true);
+assertEq(Object.prototype.isPrototypeOf(function(){}), true);
+
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("All tests passed!");