End-to-end browser tests for speech recognition.

chrome/test/speech/mock_google_one_shot_server.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_TEST_SPEECH_MOCK_GOOGLE_ONE_SHOT_SERVER_H_
+#define CHROME_TEST_SPEECH_MOCK_GOOGLE_ONE_SHOT_SERVER_H_
+
+#include "base/compiler_specific.h"
+#include "content/public/common/speech_recognition_result.h"
+#include "net/url_request/test_url_fetcher_factory.h"
+
+namespace content {
+struct SpeechRecognitionResult;
+}
+
+namespace speech {
+// Provides a mock implementation of the Google remote one-shot speech
+// recognition webservice, exploiting the TestURLFetcher to extract request
+// parameters and provide forged JSON responses back to the client.
+// It is intended for closing the server-side loop in speech tests that involve
+// the GoogleOneShotRemoteEngine client.
+class MockGoogleOneShotServer : public net::TestURLFetcherDelegateForTests {
+ public:
+  class Delegate {
+   public:
+    virtual void OnClientConnected() = 0;
+    virtual void OnClientAudioUpload() = 0;
+    virtual void OnClientAudioUploadComplete() = 0;
+    virtual void OnClientDisconnected() = 0;
+  };
+
+  explicit MockGoogleOneShotServer(Delegate* delegate);
+  virtual ~MockGoogleOneShotServer();
+
+  void SimulateResult(const content::SpeechRecognitionResult& result);
+  void SimulateServerFailure();
+  void SimulateMalformedResponse();
+
+  // net::TestURLFetcherDelegateForTests implementation.
+  virtual void OnRequestStart(int fetcher_id) OVERRIDE;
+  virtual void OnChunkUpload(int fetcher_id) OVERRIDE;
+  virtual void OnRequestEnd(int fetcher_id) OVERRIDE;
+
+  // Retrieves the language parmeter for the request (e.g., lang=en-US).
+  const std::string& GetRequestLanguage() const;
+
+  // Retrieves the grammar parmeter for the request (e.g., lm=http://url/g.xml).
+  const std::string& GetRequestGrammar() const;
+
+ private:
+  void SimulateServerResponse(bool success, const std::string& http_response);
+  net::TestURLFetcher* GetURLFetcher() const;
+
+  Delegate* delegate_;
+  net::TestURLFetcherFactory url_fetcher_factory_;
+
+  // Request arguments extracted by the HTTP query string.
+  std::string request_language;
+  std::string request_grammar;
+
+  DISALLOW_COPY_AND_ASSIGN(MockGoogleOneShotServer);
+};
+
+typedef MockGoogleOneShotServer::Delegate MockGoogleOneShotServerDelegate;
+
+}  // namespace speech
+
+#endif  // CHROME_TEST_SPEECH_MOCK_GOOGLE_ONE_SHOT_SERVER_H_