1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-15.js b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-15.js
new file mode 100644
index 0000000000..a79cef36b7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-15.js
@@ -0,0 +1,43 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Step 4 of defineProperty calls the [[DefineOwnProperty]] internal method
+    of O to define the property. For configurable properties, step 9c of
+    [[DefineOwnProperty]] permits changing the kind of a property.
+es5id: 15.2.3.6-4-15
+description: >
+    Object.defineProperty permits changing accessor property to data
+    property for configurable properties
+---*/
+
+var o = {};
+
+// define an accessor property
+// dummy getter
+var getter = function() {
+  return 1;
+}
+var d1 = {
+  get: getter,
+  configurable: true
+};
+Object.defineProperty(o, "foo", d1);
+
+// changing "foo" to be a data valued property should succeed, since
+// [[Configurable]] on the original property will be true. Existing
+// values of [[Configurable]] and [[Enumerable]] need to be preserved
+// and the rest need to be set to their default values.
+var desc = {
+  value: 101
+};
+Object.defineProperty(o, "foo", desc);
+var d2 = Object.getOwnPropertyDescriptor(o, "foo");
+
+assert.sameValue(d2.value, 101, 'd2.value');
+assert.sameValue(d2.writable, false, 'd2.writable');
+assert.sameValue(d2.enumerable, false, 'd2.enumerable');
+assert.sameValue(d2.configurable, true, 'd2.configurable');
+
+reportCompare(0, 0);