1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-undefined-or-null.js b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-undefined-or-null.js
new file mode 100644
index 0000000000..84fa1c2d77
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-undefined-or-null.js
@@ -0,0 +1,47 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-proxy-object-internal-methods-and-internal-slots-setprototypeof-v
+description: >
+  Return target.[[SetPrototypeOf]] (V) if trap is undefined or null.
+info: |
+  [[SetPrototypeOf]] (V)
+
+  6. Let trap be ? GetMethod(handler, "setPrototypeOf").
+  7. If trap is undefined, then
+    a. Return ? target.[[SetPrototypeOf]](V).
+
+  GetMethod (V, P)
+
+  2. Let func be ? GetV(V, P).
+  3. If func is either undefined or null, return undefined.
+features: [Proxy]
+---*/
+
+var proxy, called, value;
+var target = new Proxy({}, {
+  setPrototypeOf: function(t, v) {
+    called += 1;
+    value = v;
+    return true;
+  }
+});
+var proto = {};
+
+proxy = new Proxy(target, {});
+called = 0;
+value = false;
+Object.setPrototypeOf(proxy, proto);
+assert.sameValue(called, 1, "undefined, target.[[SetPrototypeOf]] is called");
+assert.sameValue(value, proto, "undefined, called with V");
+
+proxy = new Proxy(target, {
+  setPrototypeOf: null
+});
+called = 0;
+value = false;
+Object.setPrototypeOf(proxy, proto);
+assert.sameValue(called, 1, "null, target.[[SetPrototypeOf]] is called");
+assert.sameValue(value, proto, "null, called with V");
+
+reportCompare(0, 0);