fix($parse): handle promises returned from parsed function calls

When a parsed function call returns a promise, the evaluated value
is the resolved value of the promise rather than the promise object.

Closes #3503

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ng/parseSpec.js b/test/ng/parseSpec.js
index f9a80fb6..7673066b 100644
--- a/test/ng/parseSpec.js
+++ b/test/ng/parseSpec.js
@@ -846,6 +846,18 @@ describe('parser', function() {
             expect(scope.$eval('greeting')).toBe(undefined);
           });
 
+          it('should evaluate a function call returning a promise and eventually get its return value', function() {
+            scope.greetingFn = function() { return promise; };
+            expect(scope.$eval('greetingFn()')).toBe(undefined);
+
+            scope.$digest();
+            expect(scope.$eval('greetingFn()')).toBe(undefined);
+
+            deferred.resolve('hello!');
+            expect(scope.$eval('greetingFn()')).toBe(undefined);
+            scope.$digest();
+            expect(scope.$eval('greetingFn()')).toBe('hello!');
+          });
 
           describe('assignment into promises', function() {
             // This behavior is analogous to assignments to non-promise values