Adding Angular and dependent packages for testing

third_party/pkg/angular/test/playback/playback_http_spec.dart

+import '../_specs.dart';
+import 'package:angular/playback/playback_http.dart';
+
+main() => describe('Playback HTTP', () {
+  MockHttpBackend backend;
+  beforeEach(module((Module m) {
+    backend = new MockHttpBackend();
+    var wrapper = new HttpBackendWrapper(backend);
+    m
+      ..value(HttpBackendWrapper, wrapper)
+      ..type(PlaybackHttpBackendConfig);
+  }));
+
+  afterEach(() {
+    backend.verifyNoOutstandingRequest();
+    backend.verifyNoOutstandingExpectation();
+  });
+
+  describe('RecordingHttpBackend', () {
+    beforeEach(module((Module m) {
+      m.type(HttpBackend, implementedBy: RecordingHttpBackend);
+    }));
+
+
+    it('should record a request', async(inject((Http http) {
+      backend.expectGET('request').respond(200, 'response');
+
+      var responseData;
+
+      http(method: 'GET', url: 'request').then((HttpResponse r) {
+        responseData = r.data;
+      });
+
+      microLeap();
+      backend.flush();
+      backend
+        .expectPOST('/record',
+            r'{"key":"{\"url\":\"request\",\"method\":\"GET\",\"requestHeaders\":{\"Accept\":\"application/json, text/plain, */*\",\"X-XSRF-TOKEN\":\"secret\"},\"data\":null}",' +
+            r'"data":"{\"status\":200,\"headers\":\"\",\"data\":\"response\"}"}')
+        .respond(200);
+
+      microLeap();
+      backend.flush();
+      microLeap();
+
+      expect(responseData).toEqual('response');
+    })));
+  });
+
+
+  describe('PlaybackHttpBackend', () {
+    beforeEach(module((Module m) {
+      m.type(HttpBackend, implementedBy: PlaybackHttpBackend);
+    }));
+
+    it('should replay a request', async(inject((Http http, HttpBackend hb) {
+      (hb as PlaybackHttpBackend).data = {
+        r'{"url":"request","method":"GET","requestHeaders":{"Accept":"application/json, text/plain, */*","X-XSRF-TOKEN":"secret"},"data":null}': {'status': 200, 'headers': '', 'data': 'playback data'}
+      };
+
+      var responseData;
+
+      http(method: 'GET', url: 'request').then((HttpResponse r) {
+        responseData = r.data;
+      });
+
+      microLeap();
+
+      expect(responseData).toEqual('playback data');
+    })));
+
+  });
+});