fix angular#86: added a check in the annotate helper to detect if is …

…a property of the function's prototype

src/annotations.js

@@ -61,6 +61,10 @@ class ProvidePromise extends Provide {
 // Append annotation on a function or class.
 // This can be helpful when not using ES6+.
 function annotate(fn, annotation) {
+  if (fn.annotations === Object.getPrototypeOf(fn).annotations) {
+    fn.annotations = []
+  }
+
   fn.annotations = fn.annotations || [];
   fn.annotations.push(annotation);
 }

test/injector.spec.js

@@ -1,5 +1,5 @@
 import {Injector} from '../src/injector';
-import {Inject, Provide, SuperConstructor, InjectLazy, TransientScope} from '../src/annotations';
+import {annotate, Inject, Provide, SuperConstructor, InjectLazy, TransientScope} from '../src/annotations';
 
 import {Car, CyclicEngine} from './fixtures/car';
 import {module as houseModule} from './fixtures/house';
@@ -273,6 +273,45 @@ describe('injector', function() {
     });
 
 
+    it('should support "super" to call multiple parent constructors with annotate helper', function() {
+      class Foo {}
+      class Bar {}
+
+      class Parent {
+        constructor(foo) {
+          this.parentFoo = foo;
+        }
+      }
+      annotate(Parent, new Inject(Foo))
+
+      class Child extends Parent {
+        constructor(superConstructor, foo) {
+          superConstructor();
+          this.childFoo = foo;
+        }
+      }
+      annotate(Child, new Inject(SuperConstructor, Foo))
+
+      class GrandChild extends Child {
+        constructor(bar, superConstructor, foo) {
+          superConstructor();
+          this.grandChildBar = bar;
+          this.grandChildFoo = foo;
+        }
+      }
+      annotate(GrandChild, new Inject(Bar, SuperConstructor, Foo))
+
+
+      var injector = new Injector();
+      var instance = injector.get(GrandChild);
+
+      expect(instance.parentFoo).toBeInstanceOf(Foo);
+      expect(instance.childFoo).toBeInstanceOf(Foo);
+      expect(instance.grandChildFoo).toBeInstanceOf(Foo);
+      expect(instance.grandChildBar).toBeInstanceOf(Bar);
+    });
+
+
     it('should throw an error when used in a factory function', function() {
       class Something {}