1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/assign/target-set-not-writable.js b/js/src/tests/test262/built-ins/Object/assign/target-set-not-writable.js
new file mode 100644
index 0000000000..930ddb8302
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/assign/target-set-not-writable.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.1
+description: Errors thrown during definition of target object attributes
+info: |
+    [...]
+    5. For each element nextSource of sources, in ascending index order,
+    [...]
+    c. Repeat for each element nextKey of keys in List order,
+       [...]
+       iii. if desc is not undefined and desc.[[Enumerable]] is true, then
+            [...]
+            3. Let status be Set(to, nextKey, propValue, true).
+            4. ReturnIfAbrupt(status).
+---*/
+
+var target = {};
+Object.defineProperty(target, 'attr', {
+  writable: false
+});
+
+assert.throws(TypeError, function() {
+  Object.assign(target, {
+    attr: 1
+  });
+});
+
+reportCompare(0, 0);