refactor(dart/transform tests): Use actual directive def'n instead of mock.

In the transformer unit tests, we previously used a mock directive annotation. This update
substitutes the actual Angular2 directive annotations.

Closes angular#706

Author: Tim Blasi

modules/angular2/src/transform/codegen.dart

@@ -224,6 +224,14 @@ abstract class _TransformVisitor extends ToSourceVisitor {
     }
   }
 
+  @override
+  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+    // We add our own prefixes in [visitSimpleIdentifier], discard any used in
+    // the original source.
+    _visitNode(node.identifier);
+    return null;
+  }
+
   @override
   Object visitSimpleIdentifier(SimpleIdentifier node) {
     // Make sure the identifier is prefixed if necessary.
@@ -281,6 +289,7 @@ class _CtorTransformVisitor extends _TransformVisitor {
   @override
   Object visitDefaultFormalParameter(DefaultFormalParameter node) {
     _visitNode(node.parameter);
+    // Ignore the declared default value.
     return null;
   }
 

modules/angular2/test/transform/common.dart

@@ -3,8 +3,8 @@ library bar;
 import 'package:angular2/src/core/annotations/annotations.dart';
 import 'foo.dart';
 
-@Directive(context: const [MyContext])
-class Component {
+@Component(componentServices: const [MyContext])
+class MyComponent {
   final MyContext c;
-  Component(this.c);
+  MyComponent(this.c);
 }

modules/angular2/test/transform/ctor_with_default_value_files/bar.dart

@@ -6,10 +6,12 @@ import 'index.dart' as i3;
 
 main() {
   reflector
-    ..registerType(i0.Component, {
-      "factory": (i1.MyContext c) => new i0.Component(c),
+    ..registerType(i0.MyComponent, {
+      "factory": (i1.MyContext c) => new i0.MyComponent(c),
       "parameters": const [const [i1.MyContext]],
-      "annotations": const [const i2.Directive(context: const [i1.MyContext])]
+      "annotations": const [
+        const i2.Component(componentServices: const [i1.MyContext])
+      ]
     });
   i3.main();
 }

modules/angular2/test/transform/ctor_with_default_value_files/expected/index.bootstrap.dart

@@ -2,7 +2,7 @@ library bar;
 
 import 'package:angular2/src/core/annotations/annotations.dart';
 
-@Directive(context: 'soup')
-class Component {
-  Component();
+@Component(selector: '[soup]')
+class MyComponent {
+  MyComponent();
 }

modules/angular2/test/transform/ctor_with_default_value_files/index.dart

@@ -5,10 +5,10 @@ import 'index.dart' as i2;
 
 main() {
   reflector
-    ..registerType(i0.Component, {
-      "factory": () => new i0.Component(),
+    ..registerType(i0.MyComponent, {
+      "factory": () => new i0.MyComponent(),
       "parameters": const [const []],
-      "annotations": const [const i1.Directive(context: 'soup')]
+      "annotations": const [const i1.Component(selector: '[soup]')]
     });
   i2.main();
 }

modules/angular2/test/transform/list_of_types_files/bar.dart

@@ -3,5 +3,5 @@ library web_foo;
 import 'bar.dart';
 
 void main() {
-  new Component('Things');
+  new MyComponent('Things');
 }