2 new tests re: foreign thenables

test/built-ins/Promise/resolve/S25.4.4.5_A3.1_T1.js

@@ -17,10 +17,17 @@ var thenable = {
         sequence.push(3);
         checkSequence(sequence, "thenable.then called");
 
-        Promise.resolve().then(function () {
-            sequence.push(4);
-            checkSequence(sequence, "all done");
-        }).then($DONE, $DONE);
+        assert.sameValue(this, thenable);
+
+        onResolve('resolved');
+
+        sequence.push(4);
+        checkSequence(sequence, "after resolved");
+
+        throw new Error('interrupt flow');
+
+        sequence.push(4);
+        checkSequence(sequence, "duplicate sequence point not pushed");
     }
 };
 
@@ -31,3 +38,11 @@ var p1 = Promise.resolve(thenable);
 
 sequence.push(2);
 checkSequence(sequence, "thenable.then queued but not yet called");
+
+p1.then(function (q) {
+    sequence.push(5);
+    checkSequence(sequence, "all done");
+
+    assert.sameValue(q, 'resolved');
+
+}).then($DONE, $DONE);

test/built-ins/Promise/resolve/S25.Promise_resolve_foreign_thenable_1.js

@@ -0,0 +1,25 @@
+// Copyright 2014 Cubane Canada, Inc.  All rights reserved.
+// See LICENSE for details.
+
+/*---
+info: >
+   Promise.resolve
+es6id: S25.4.4.5
+author: Sam Mikes
+description: Promise.resolve delegates to foreign thenable
+includes: [PromiseHelper.js]
+---*/
+
+var sequence = [];
+
+var thenable = {
+    then: function(onResolve, onReject) {
+        return onResolve('resolved');
+    }
+};
+
+var p = Promise.resolve(thenable);
+
+p.then(function (r) {
+    assert.sameValue(r, 'resolved');
+}).then($DONE, $DONE);

test/built-ins/Promise/resolve/S25.Promise_resolve_foreign_thenable_2.js

@@ -0,0 +1,40 @@
+// Copyright 2014 Cubane Canada, Inc.  All rights reserved.
+// See LICENSE for details.
+
+/*---
+info: >
+   Promise.resolve
+es6id: S25.4.4.5
+author: Sam Mikes
+description: Promise.resolve delegates to foreign thenable
+includes: [PromiseHelper.js]
+---*/
+
+var sequence = [];
+
+var thenable = {
+    then: function(onResolve, onReject) {
+
+        sequence.push(3);
+        checkSequence(sequence, "thenable.then called");
+
+        assert.sameValue(this, thenable, "thenable.then called with `thenable` as `this`");
+
+        return onResolve('resolved');
+    }
+};
+
+sequence.push(1);
+checkSequence(sequence, "no async calls yet");
+
+var p = Promise.resolve(thenable);
+
+sequence.push(2);
+checkSequence(sequence, "thenable.then queued but not yet called");
+
+p.then(function (r) {
+    sequence.push(4);
+    checkSequence(sequence, "all done");
+
+    assert.sameValue(r, 'resolved');
+}).then($DONE, $DONE);