Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/playback/playback_http.dart

+library angular.playback.playback_http;
+
+import 'dart:async';
+import 'dart:convert' show JSON;
+import 'dart:html';
+
+import 'package:angular/core_dom/module.dart';
+import 'package:angular/mock/module.dart' as mock;
+
+import 'playback_data.dart' as playback_data;
+
+class PlaybackHttpBackendConfig {
+  requestKey(String url,
+                 {String method, bool withCredentials, String responseType,
+                 String mimeType, Map<String, String> requestHeaders, sendData,
+                 void onProgress(ProgressEvent e)}) {
+    return JSON.encode({
+        "url": url,
+        "method": method,
+        "requestHeaders": requestHeaders,
+        "data": sendData
+    });
+  }
+}
+
+// HELP! The DI system is getting in the way.  We want
+// the HttpBackend, but it will be implemented by ourselves.
+class HttpBackendWrapper {
+  HttpBackend backend;
+  HttpBackendWrapper(HttpBackend this.backend);
+}
+
+class RecordingHttpBackend implements HttpBackend {
+
+  HttpBackend _prodBackend;
+  PlaybackHttpBackendConfig _config;
+
+  RecordingHttpBackend(HttpBackendWrapper wrapper, this._config) {
+    this._prodBackend = wrapper.backend;
+  }
+
+  Future request(String url,
+                 {String method, bool withCredentials, String responseType,
+                 String mimeType, Map<String, String> requestHeaders, sendData,
+                 void onProgress(ProgressEvent e)}) {
+    return _prodBackend.request(url,
+        method: method,
+        withCredentials: withCredentials,
+        responseType: responseType,
+        mimeType: mimeType,
+        requestHeaders: requestHeaders,
+        sendData: sendData,
+        onProgress: onProgress).then((HttpRequest r) {
+
+     var key = _config.requestKey(url,
+        method: method,
+        withCredentials: withCredentials,
+        responseType: responseType,
+        mimeType: mimeType,
+        requestHeaders: requestHeaders,
+        sendData: sendData,
+        onProgress: onProgress);
+
+      assert(key is String);
+      _prodBackend.request('/record',  //TODO make this URL configurable.
+        method: 'POST', sendData: JSON.encode({
+          "key": key, "data": JSON.encode({
+              "status": r.status,
+              "headers": r.getAllResponseHeaders(),
+              "data": r.responseText})
+      }));
+      return r;
+    });
+  }
+}
+
+class PlaybackHttpBackend implements HttpBackend {
+
+  PlaybackHttpBackendConfig _config;
+
+  PlaybackHttpBackend(this._config);
+
+  Map data = playback_data.playbackData;
+
+  Future request(String url,
+                 {String method, bool withCredentials, String responseType,
+                 String mimeType, Map<String, String> requestHeaders, sendData,
+                 void onProgress(ProgressEvent e)}) {
+    var key = _config.requestKey(url,
+        method: method,
+        withCredentials: withCredentials,
+        responseType: responseType,
+        mimeType: mimeType,
+        requestHeaders: requestHeaders,
+        sendData: sendData,
+        onProgress: onProgress);
+
+    if (!data.containsKey(key)) {
+      throw ["Request is not recorded $key"];
+    }
+    var playback = data[key];
+    return new Future.value(
+        new mock.MockHttpRequest(
+            playback['status'],
+            playback['data'],
+            playback['headers']));
+  }
+}