1 files changed, 80 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/toboolean-trap-result-true-target-is-extensible.js b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/toboolean-trap-result-true-target-is-extensible.js
new file mode 100644
index 0000000000..6da14809f0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/toboolean-trap-result-true-target-is-extensible.js
@@ -0,0 +1,80 @@
+// Copyright (C) 2016 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 true if ToBoolean(trap result) is true, and target.[[IsExtensible]] is
+  true
+info: |
+  [[SetPrototypeOf]] (V)
+
+  8. Let booleanTrapResult be ToBoolean(? Call(trap, handler, « target, V »)).
+  9. If booleanTrapResult is false, return false.
+  10. Let extensibleTarget be ? IsExtensible(target).
+  11. If extensibleTarget is true, return true.
+features: [Proxy, Reflect, Reflect.setPrototypeOf, Symbol]
+---*/
+
+var called;
+var target = new Proxy({}, {
+  isExtensible: function() {
+    called += 1;
+    return true;
+  },
+  getPrototypeOf: function() {
+    throw new Test262Error("target.[[GetPrototypeOf]] is not called");
+  }
+});
+
+var p = new Proxy(target, {
+  setPrototypeOf: function(t, v) {
+    return v.attr;
+  }
+});
+
+var result;
+
+called = 0;
+result = Reflect.setPrototypeOf(p, {
+  attr: true
+});
+assert.sameValue(result, true, "true");
+assert.sameValue(called, 1, "true - isExtensible is called");
+
+called = 0;
+result = Reflect.setPrototypeOf(p, {
+  attr: "false"
+});
+assert.sameValue(result, true, "string");
+assert.sameValue(called, 1, "string - isExtensible is called");
+
+called = 0;
+result = Reflect.setPrototypeOf(p, {
+  attr: 42
+});
+assert.sameValue(result, true, "42");
+assert.sameValue(called, 1, "number - isExtensible is called");
+
+called = 0;
+result = Reflect.setPrototypeOf(p, {
+  attr: p
+});
+assert.sameValue(result, true, "p");
+assert.sameValue(called, 1, "object - isExtensible is called");
+
+called = 0;
+result = Reflect.setPrototypeOf(p, {
+  attr: []
+});
+assert.sameValue(result, true, "[]");
+assert.sameValue(called, 1, "[] - isExtensible is called");
+
+called = 0;
+result = Reflect.setPrototypeOf(p, {
+  attr: Symbol(1)
+});
+assert.sameValue(result, true, "symbol");
+assert.sameValue(called, 1, "symbol - isExtensible is called");
+
+reportCompare(0, 0);