chore(transformer): add tests for property bindings and multiple executions

modules/angular2/test/transform/template_compiler/all_tests.dart

@@ -92,6 +92,18 @@ void allTests() {
       output = await process(new AssetId('a', inputPath));
       _formatThenExpectEquals(output, expected);
     });
+
+    it('should create the same output for multiple calls.', () async {
+      var inputPath =
+          'template_compiler/inline_expression_files/hello.ng_deps.dart';
+      var expected = readFile(
+          'template_compiler/inline_expression_files/expected/hello.ng_deps.dart');
+      var output = await process(new AssetId('a', inputPath));
+      _formatThenExpectEquals(output, expected);
+      output = await process(new AssetId('a', inputPath));
+      _formatThenExpectEquals(output, expected);
+    });
+
   });
 }
 

modules/angular2/test/transform/template_compiler/inline_expression_files/expected/hello.ng_deps.dart

@@ -14,9 +14,13 @@ void initReflector(reflector) {
       'parameters': const [const []],
       'annotations': const [
         const Component(selector: 'hello-app'),
-        const View(template: '{{greeting}}')
+        const View(template: '<div [a]="b">{{greeting}}</div>')
       ]
     })
-    ..registerGetters({'greeting': (o) => o.greeting})
-    ..registerSetters({'greeting': (o, v) => o.greeting = v});
+    ..registerGetters({'b': (o) => o.b, 'greeting': (o) => o.greeting})
+    ..registerSetters({
+      'b': (o, v) => o.b = v,
+      'greeting': (o, v) => o.greeting = v,
+      'a': (o, v) => o.a = v
+    });
 }

modules/angular2/test/transform/template_compiler/inline_expression_files/hello.ng_deps.dart

@@ -14,7 +14,7 @@ void initReflector(reflector) {
       'parameters': const [const []],
       'annotations': const [
         const Component(selector: 'hello-app'),
-        const View(template: '{{greeting}}')
+        const View(template: '<div [a]="b">{{greeting}}</div>')
       ]
     });
 }