[promise] make Promise.resolve match spec

test/mjsunit/es6/promises.js

Index: test/mjsunit/es6/promises.js
diff --git a/test/mjsunit/es6/promises.js b/test/mjsunit/es6/promises.js
index d02f7b7ef3e869e3ffede7bba2a9f3308044a601..ccc5649a9c51fd36a1ab1b8566acfaaefdee719c 100644
--- a/test/mjsunit/es6/promises.js
+++ b/test/mjsunit/es6/promises.js
@@ -47,6 +47,8 @@ function clear(o) {
   clear(o.__proto__)
   var properties = getOwnPropertyNames(o)
   for (var i in properties) {
+    // Do not clobber Object.prototype.toString, which is used by tests.
+    if (properties[i] === "toString") continue;
     clearProp(o, properties[i])
   }
 }
@@ -1055,7 +1057,8 @@ function assertAsyncDone(iteration) {
 
   log = ""
   MyPromise.all([21, Promise.accept(22), 23, MyPromise.accept(24), 25, 26])
-  assertTrue(log === "nx24nnx21nnnnx23nnnx25nnx26n", "subclass/all/self")
+  assertTrue(log === "nx24nnx21nnx[object Promise]nnx23nnnx25nnx26n",

[caitp (gmail), 2015/12/22 17:34:06]

This result matches the current behaviour of JavaScriptCore, and passes related
Test262 bits, so I assume this is correct.

+             "subclass/all/self")
 })();
 
 (function() {