Promise assimilation fix.

test/webkit/fast/js/Promise-coerce.js

Index: test/webkit/fast/js/Promise-coerce.js
diff --git a/test/webkit/fast/js/Promise-coerce.js b/test/webkit/fast/js/Promise-coerce.js
new file mode 100644
index 0000000000000000000000000000000000000000..a58ad6dd54281d69b093c5c2a92c30e1eccd0e83
--- /dev/null
+++ b/test/webkit/fast/js/Promise-coerce.js
@@ -0,0 +1,64 @@
+// Copyright 2015 the V8 project authors. All rights reserved.

[yhirano, 2015/04/17 08:01:35]

I don't know what license header I should use. Can you tell me?

[arv (Not doing code reviews), 2015/04/17 14:32:06]

test/webkit/ is for tests imported from webkit. New tests should be written in
test/mjsunit and in this case test/mjsunit/es6/

[yhirano, 2015/04/30 05:05:16]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony
+'use strict';
+description('Test Promise-like objects');
+
+var called1 = false;
+var called2 = false;
+var called3 = false;
+var called4 = false;
+var value1 = 0;
+var value2 = 0;
+var value3 = 0;
+var value4 = 0;
+Promise.resolve().then(function() {
+  var y = Promise.resolve(11);
+  y.then = function() {
+    called1 = true;
+    return Promise.prototype.then.apply(y, arguments);
+  };
+  return y;
+}).then(function(v) {
+  value1 = v;
+
+  var y = Promise.resolve(43);
+  return {
+    then: function() {
+      called2 = true;
+      return Promise.prototype.then.apply(y, arguments);
+    }
+  };
+}).then(function(v) {
+  value2 = v;
+
+  var y = Promise.resolve(91);
+  return Promise.resolve({
+    then: function() {
+      called3 = true;
+      return Promise.prototype.then.apply(y, arguments);
+    }
+  });
+}).then(function(v) {
+  value3 = v;
+
+  var y = Promise.resolve(98);
+  y.then = function() {
+    called4 = true;
+    return Promise.prototype.then.apply(y, arguments);
+  };
+  return new Promise(function(r) {r(y);});
+}).then(function(v) {
+  value4 = v;
+}).then(function(v) {
+  shouldBeTrue('called1');
+  shouldBeTrue('called2');
+  shouldBeTrue('called3');
+  shouldBeTrue('called4');
+  shouldBe('value1', '11');
+  shouldBe('value2', '43');
+  shouldBe('value3', '91');
+  shouldBe('value4', '98');
+}).then(finishJSTest, finishJSTest);