Expose promise value through promise mirror.

test/mjsunit/es6/mirror-promises.js

Index: test/mjsunit/es6/mirror-promises.js
diff --git a/test/mjsunit/es6/mirror-promises.js b/test/mjsunit/es6/mirror-promises.js
index c0eb5bf9bb286f4dfd55e25b4cef8db54c86f547..5a21a6b9e621487b56745829ad03fbac1b16845f 100644
--- a/test/mjsunit/es6/mirror-promises.js
+++ b/test/mjsunit/es6/mirror-promises.js
@@ -17,7 +17,7 @@ MirrorRefCache.prototype.lookup = function(handle) {
   return this.refs_[handle];
 }
 
-function testPromiseMirror(promise, status) {
+function testPromiseMirror(promise, status, value) {
   // Create mirror and JSON representation.
   var mirror = debug.MakeMirror(promise);
   var serializer = debug.MakeMirrorSerializer();
@@ -39,6 +39,7 @@ function testPromiseMirror(promise, status) {
   assertEquals("Object", mirror.className());
   assertEquals("#<Promise>", mirror.toText());
   assertSame(promise, mirror.value());
+  assertEquals(value, mirror.promiseValue());
 
   // Parse JSON representation and check.
   var fromJSON = eval('(' + json + ')');
@@ -47,7 +48,7 @@ function testPromiseMirror(promise, status) {
   assertEquals('function', refs.lookup(fromJSON.constructorFunction.ref).type);
   assertEquals('Promise', refs.lookup(fromJSON.constructorFunction.ref).name);
   assertEquals(status, fromJSON.status);
-
+  assertEquals(value, fromJSON.promiseValue);
 }
 
 // Test a number of different promises.
@@ -55,6 +56,14 @@ var resolved = new Promise(function(resolve, reject) { resolve() });
 var rejected = new Promise(function(resolve, reject) { reject() });
 var pending = new Promise(function(resolve, reject) {});
 
-testPromiseMirror(resolved, "resolved");
-testPromiseMirror(rejected, "rejected");
-testPromiseMirror(pending, "pending");
+testPromiseMirror(resolved, "resolved", undefined);
+testPromiseMirror(rejected, "rejected", undefined);
+testPromiseMirror(pending, "pending", undefined);
+
+var resolvedv = new Promise(function(resolve, reject) { resolve('resolve') });
+var rejectedv = new Promise(function(resolve, reject) { reject('reject') });
+var thrownv = new Promise(function(resolve, reject) { throw 'throw' });
+
+testPromiseMirror(resolvedv, "resolved", 'resolve');
+testPromiseMirror(rejectedv, "rejected", 'reject');
+testPromiseMirror(thrownv, "rejected", 'throw');