Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 39 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js
new file mode 100644
index 0000000000..28ba9fae71
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-17.js
@@ -0,0 +1,39 @@
+// 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 non-configurable properties, step 10.a.ii.1
+    of [[DefineOwnProperty]] rejects changing the value of non-writable properties.
+es5id: 15.2.3.6-4-17
+description: >
+    Object.defineProperty throws TypeError when changing value of
+    non-writable non-configurable data properties
+---*/
+
+var o = {};
+
+// create a data valued property; all other attributes default to false.
+var d1 = {
+  value: 101
+};
+Object.defineProperty(o, "foo", d1);
+
+// now, trying to change the value of "foo" should fail, since both
+// [[Configurable]] and [[Writable]] on the original property will be false.
+var desc = {
+  value: 102
+};
+assert.throws(TypeError, function() {
+  Object.defineProperty(o, "foo", desc);
+});
+// the property should remain unchanged.
+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, false, 'd2.configurable');
+
+reportCompare(0, 0);