1 files changed, 51 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug730977-implement-jsop-delprop.js b/js/src/jit-test/tests/ion/bug730977-implement-jsop-delprop.js
new file mode 100644
index 000000000..3939c7d38
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug730977-implement-jsop-delprop.js
@@ -0,0 +1,51 @@
+
+function makeThing(i)
+{
+    var thing = {};
+    thing.foo = i;
+    thing.bar = "bar_" + i;
+    Object.defineProperty(thing, 'baz', {'configurable':false, 'value':[i]});
+    return thing;
+}
+function makeArray(count)
+{
+    var arr = new Array(count);
+    for(var i = 0; i < count; i++) {
+        arr[i] = makeThing(i);
+    }
+    return arr;
+}
+function delBar(obj)
+{
+    assertEq(Object.getOwnPropertyDescriptor(obj, 'bar') === undefined, false);
+    assertEq(delete obj.bar, true);
+    assertEq(Object.getOwnPropertyDescriptor(obj, 'bar') === undefined, true);
+}
+function delBaz(obj)
+{
+    var s = delete obj.baz;
+    assertEq(Object.getOwnPropertyDescriptor(obj, 'baz') === undefined, false);
+    assertEq(delete obj.baz, false);
+    assertEq(Object.getOwnPropertyDescriptor(obj, 'baz') === undefined, false);
+}
+function delNonexistentThingy(obj)
+{
+    assertEq(Object.getOwnPropertyDescriptor(obj, 'thingy') === undefined, true);
+    assertEq(delete obj.thingy, true);
+    assertEq(Object.getOwnPropertyDescriptor(obj, 'thingy') === undefined, true);
+}
+function testDelProp()
+{
+    var arr = makeArray(10000);
+    for(var i = 0; i < 10000; i++) {
+        var obj = arr[i];
+        assertEq(Object.getOwnPropertyDescriptor(obj, 'foo') === undefined, false);
+        assertEq(delete obj.foo, true);
+        assertEq(Object.getOwnPropertyDescriptor(obj, 'foo') === undefined, true);
+        delBar(obj);
+        delBaz(obj);
+        delNonexistentThingy(obj);
+    }
+}
+
+testDelProp();