1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/has-definite-folding.js b/js/src/jit-test/tests/ion/has-definite-folding.js
new file mode 100644
index 0000000000..3e5dcfad45
--- /dev/null
+++ b/js/src/jit-test/tests/ion/has-definite-folding.js
@@ -0,0 +1,32 @@
+var max = 40;
+setJitCompilerOption("ion.warmup.trigger", max - 10);
+
+function defineProperty() {
+    var abc = {};
+    Object.defineProperty(abc, "x", {value: 1})
+    assertEq(abc.x, 1);
+}
+
+function simple() {
+    var o = {a: 1};
+    assertEq("a" in o, true);
+    assertEq("b" in o, false);
+    assertEq(o.hasOwnProperty("a"), true);
+    assertEq(o.hasOwnProperty("b"), false);
+}
+
+function proto() {
+    var o = {a: 1, __proto__: {b: 2}};
+    assertEq("a" in o, true);
+    assertEq("b" in o, true);
+    assertEq("c" in o, false);
+    assertEq(o.hasOwnProperty("a"), true);
+    assertEq(o.hasOwnProperty("b"), false);
+    assertEq(o.hasOwnProperty("c"), false);
+}
+
+for (var i = 0; i < max; i++) {
+    defineProperty();
+    simple();
+    proto();
+}