[Hotword] Implement audio history pref accessing and setting.

chrome/browser/history/web_history_service_unittest.cc

Index: chrome/browser/history/web_history_service_unittest.cc
diff --git a/chrome/browser/history/web_history_service_unittest.cc b/chrome/browser/history/web_history_service_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0d6e8ac17483963d80dc32a52834d49d964da403
--- /dev/null
+++ b/chrome/browser/history/web_history_service_unittest.cc
@@ -0,0 +1,429 @@
+// Copyright 2014 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.
+
+#include "chrome/browser/history/web_history_service.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "base/run_loop.h"
+#include "chrome/browser/history/web_history_service_factory.h"
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/profile_sync_service_factory.h"
+#include "chrome/browser/sync/profile_sync_service_mock.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "net/http/http_status_code.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using history::WebHistoryService;
+using ::testing::Return;
+
+namespace {
+
+// A testing web history service that does extra checks and creates a
+// TestRequest instead of a normal request.
+class TestingWebHistoryService : public WebHistoryService {
+ public:
+  explicit TestingWebHistoryService(Profile* profile)
+    : WebHistoryService(profile),
+      profile_(profile),
+      expected_url_(GURL()),
+      expected_audio_history_value_(false),
+      current_expected_post_data_("") {
+  }
+  ~TestingWebHistoryService() override {}
+
+  WebHistoryService::Request* CreateRequest(
+      const GURL& url, const CompletionCallback& callback) override;
+
+  // This is sorta an override but override and static don't mix.
+  // This function just calls WebHistoryService::ReadResponse.
+  static scoped_ptr<base::DictionaryValue> ReadResponse(
+      Request* request);
+
+  const std::string& GetExpectedPostData(WebHistoryService::Request* request);
+
+  std::string GetExpectedAudioHistoryValue();
+
+  void SetAudioHistoryCallback(bool success, bool new_enabled_value);
+
+  void GetAudioHistoryCallback(bool success, bool new_enabled_value);
+
+  void MultipleRequestsCallback(bool success, bool new_enabled_value);
+
+  void SetExpectedURL(const GURL& expected_url) {
+    expected_url_ = expected_url;
+  }
+
+  void SetExpectedAudioHistoryValue(bool expected_value) {
+    expected_audio_history_value_ = expected_value;
+  }
+
+  void SetExpectedPostData(const std::string& expected_data) {
+    current_expected_post_data_= expected_data;
+  }
+
+  void EnsureNoPendingRequestsRemain() {
+    EXPECT_EQ(0u, GetNumberOfPendingAudioHistoryRequests());
+  }
+
+ private:
+  Profile* profile_;
+  GURL expected_url_;
+  bool expected_audio_history_value_;
+  std::string current_expected_post_data_;
+  std::map<Request*, std::string> expected_post_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestingWebHistoryService);
+};
+
+// A testing request class that allows expected values to be filled in.
+class TestRequest : public WebHistoryService::Request {
+ public:
+  TestRequest(Profile* profile,
+              const GURL& url,
+              const WebHistoryService::CompletionCallback& callback,
+              int response_code,
+              const std::string& response_body)
+      : profile_(profile),
+        web_history_service_(nullptr),
+        url_(url),
+        callback_(callback),
+        response_code_(response_code),
+        response_body_(response_body),
+        post_data_(""),
+        is_pending_(false) {
+  }
+
+  TestRequest(Profile* profile,
+              const GURL& url,
+              const WebHistoryService::CompletionCallback& callback,
+              TestingWebHistoryService* web_history_service)
+      : profile_(profile),
+        web_history_service_(web_history_service),
+        url_(url),
+        callback_(callback),
+        response_code_(net::HTTP_OK),
+        response_body_(""),
+        post_data_(""),
+        is_pending_(false) {
+    response_body_ = std::string("{\"history_recording_enabled\":") +
+                     web_history_service->GetExpectedAudioHistoryValue() +
+                     ("}");
+  }
+
+  ~TestRequest() override {}
+
+  // history::Request overrides
+  bool IsPending() override { return is_pending_; }
+  int GetResponseCode() override { return response_code_; }
+  const std::string& GetResponseBody() override { return response_body_; }
+  void SetPostData(const std::string& post_data) override {
+    post_data_ = post_data;
+  }
+
+  void Start() override {
+    is_pending_ = true;
+    base::MessageLoop::current()->PostTask(
+        FROM_HERE,
+        base::Bind(&TestRequest::MimicReturnFromFetch, base::Unretained(this)));
+  }
+
+  void MimicReturnFromFetch() {
+    // Mimic a successful fetch and return. We don't actually send out a request
+    // in unittests.
+    EXPECT_EQ(web_history_service_->GetExpectedPostData(this), post_data_);
+    callback_.Run(this, true);
+  }
+
+ private:
+  Profile* profile_;
+  TestingWebHistoryService* web_history_service_;
+  GURL url_;
+  WebHistoryService::CompletionCallback callback_;
+  int response_code_;
+  std::string response_body_;
+  std::string post_data_;
+  bool is_pending_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestRequest);
+};
+
+WebHistoryService::Request* TestingWebHistoryService::CreateRequest(
+    const GURL& url, const CompletionCallback& callback) {
+  EXPECT_EQ(expected_url_, url);
+  WebHistoryService::Request* request =
+      new TestRequest(profile_, url, callback, this);
+  expected_post_data_[request] = current_expected_post_data_;
+  return request;
+}
+
+scoped_ptr<base::DictionaryValue> TestingWebHistoryService::ReadResponse(
+    Request* request) {
+  return WebHistoryService::ReadResponse(request);
+}
+
+void TestingWebHistoryService::SetAudioHistoryCallback(
+    bool success, bool new_enabled_value) {
+  EXPECT_TRUE(success);
+  // |new_enabled_value| should be equal to whatever the audio history value
+  // was just set to.
+  EXPECT_EQ(expected_audio_history_value_, new_enabled_value);
+}
+
+void TestingWebHistoryService::GetAudioHistoryCallback(
+  bool success, bool new_enabled_value) {
+  EXPECT_TRUE(success);
+  EXPECT_EQ(expected_audio_history_value_, new_enabled_value);
+}
+
+void TestingWebHistoryService::MultipleRequestsCallback(
+  bool success, bool new_enabled_value) {
+  EXPECT_TRUE(success);
+  EXPECT_EQ(expected_audio_history_value_, new_enabled_value);
+}
+
+const std::string& TestingWebHistoryService::GetExpectedPostData(
+    Request* request) {
+  return expected_post_data_[request];
+}
+
+std::string TestingWebHistoryService::GetExpectedAudioHistoryValue() {
+  if (expected_audio_history_value_)
+    return "true";
+  return "false";
+}
+
+static KeyedService* BuildWebHistoryService(content::BrowserContext* profile) {
+  return new TestingWebHistoryService(static_cast<Profile*>(profile));
+}
+
+}  // namespace
+
+// A test class used for testing the WebHistoryService class.
+// In order for WebHistoryService to be valid, we must have a valid
+// ProfileSyncService. Using the ProfileSyncServiceMock class allows to
+// assign specific return values as needed to make sure the web history
+// service is available.
+class WebHistoryServiceTest : public testing::Test {
+ public:
+  WebHistoryServiceTest()
+      : thread_bundle_(content::TestBrowserThreadBundle::REAL_DB_THREAD) {}
+  virtual ~WebHistoryServiceTest() {}
+
+  void SetUp() override {
+    ProfileSyncServiceFactory::GetInstance()->SetTestingFactoryAndUse(
+      &profile_, &ProfileSyncServiceMock::BuildMockProfileSyncService);
+    // Use SetTestingFactoryAndUse to force creation and initialization.
+    WebHistoryServiceFactory::GetInstance()->SetTestingFactoryAndUse(
+      &profile_, &BuildWebHistoryService);
+
+    ProfileSyncServiceMock* sync_service = static_cast<ProfileSyncServiceMock*>(
+        ProfileSyncServiceFactory::GetInstance()->GetForProfile(&profile_));
+    EXPECT_CALL(*sync_service,
+                SyncActive()).WillRepeatedly(Return(true));
+    syncer::ModelTypeSet result;
+    result.Put(syncer::HISTORY_DELETE_DIRECTIVES);
+    EXPECT_CALL(*sync_service,
+                GetActiveDataTypes()).WillRepeatedly(Return(result));
+  }
+  void TearDown() override {
+    base::RunLoop run_loop;
+    base::MessageLoop::current()->PostTask(FROM_HERE, run_loop.QuitClosure());
+    run_loop.Run();
+  }
+  Profile* profile() { return &profile_; }
+
+  ProfileSyncServiceMock* mock_sync_service() {
+    return static_cast<ProfileSyncServiceMock*>(
+      ProfileSyncServiceFactory::GetInstance()->GetForProfile(&profile_));
+  }
+
+ private:
+
+  content::TestBrowserThreadBundle thread_bundle_;
+  TestingProfile profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebHistoryServiceTest);
+};
+
+TEST_F(WebHistoryServiceTest, GetAudioHistoryEnabled) {
+  TestingWebHistoryService* web_history_service =
+    static_cast<TestingWebHistoryService*>(
+    WebHistoryServiceFactory::GetForProfile(profile()));
+  EXPECT_TRUE(web_history_service);
+
+  web_history_service->SetExpectedURL(
+    GURL("https://history.google.com/history/api/lookup?client=audio"));
+  web_history_service->SetExpectedAudioHistoryValue(true);
+  web_history_service->GetAudioHistoryEnabled(
+    base::Bind(&TestingWebHistoryService::GetAudioHistoryCallback,
+    base::Unretained(web_history_service)));
+  base::MessageLoop::current()->PostTask(
+    FROM_HERE,
+    base::Bind(&TestingWebHistoryService::EnsureNoPendingRequestsRemain,
+    base::Unretained(web_history_service)));
+}
+
+TEST_F(WebHistoryServiceTest, SetAudioHistoryEnabledTrue) {
+  TestingWebHistoryService* web_history_service =
+      static_cast<TestingWebHistoryService*>(
+          WebHistoryServiceFactory::GetForProfile(profile()));
+  EXPECT_TRUE(web_history_service);
+
+  web_history_service->SetExpectedURL(
+      GURL("https://history.google.com/history/api/change"));
+  web_history_service->SetExpectedAudioHistoryValue(true);
+  web_history_service->SetExpectedPostData(
+    "{\"client\":\"audio\",\"enable_history_recording\":true}");
+  web_history_service->SetAudioHistoryEnabled(
+      true,
+      base::Bind(&TestingWebHistoryService::SetAudioHistoryCallback,
+                 base::Unretained(web_history_service)));
+  base::MessageLoop::current()->PostTask(
+    FROM_HERE,
+    base::Bind(&TestingWebHistoryService::EnsureNoPendingRequestsRemain,
+               base::Unretained(web_history_service)));
+}
+
+TEST_F(WebHistoryServiceTest, SetAudioHistoryEnabledFalse) {
+  TestingWebHistoryService* web_history_service =
+    static_cast<TestingWebHistoryService*>(
+    WebHistoryServiceFactory::GetForProfile(profile()));
+  EXPECT_TRUE(web_history_service);
+
+  web_history_service->SetExpectedURL(
+    GURL("https://history.google.com/history/api/change"));
+  web_history_service->SetExpectedAudioHistoryValue(false);
+  web_history_service->SetExpectedPostData(
+    "{\"client\":\"audio\",\"enable_history_recording\":false}");
+  web_history_service->SetAudioHistoryEnabled(
+    false,
+    base::Bind(&TestingWebHistoryService::SetAudioHistoryCallback,
+    base::Unretained(web_history_service)));
+  base::MessageLoop::current()->PostTask(
+    FROM_HERE,
+    base::Bind(&TestingWebHistoryService::EnsureNoPendingRequestsRemain,
+    base::Unretained(web_history_service)));
+}
+
+TEST_F(WebHistoryServiceTest, MultipleRequests) {
+  TestingWebHistoryService* web_history_service =
+    static_cast<TestingWebHistoryService*>(
+    WebHistoryServiceFactory::GetForProfile(profile()));
+  EXPECT_TRUE(web_history_service);
+
+  web_history_service->SetExpectedURL(
+    GURL("https://history.google.com/history/api/change"));
+  web_history_service->SetExpectedAudioHistoryValue(false);
+  web_history_service->SetExpectedPostData(
+    "{\"client\":\"audio\",\"enable_history_recording\":false}");
+  web_history_service->SetAudioHistoryEnabled(
+    false,
+    base::Bind(&TestingWebHistoryService::MultipleRequestsCallback,
+    base::Unretained(web_history_service)));
+
+  web_history_service->SetExpectedURL(
+    GURL("https://history.google.com/history/api/lookup?client=audio"));
+  web_history_service->SetExpectedPostData("");
+  web_history_service->GetAudioHistoryEnabled(
+    base::Bind(&TestingWebHistoryService::MultipleRequestsCallback,
+    base::Unretained(web_history_service)));
+
+  // Check that both requests are no longer pending.
+  base::MessageLoop::current()->PostTask(
+    FROM_HERE,
+    base::Bind(&TestingWebHistoryService::EnsureNoPendingRequestsRemain,
+    base::Unretained(web_history_service)));
+}
+
+TEST_F(WebHistoryServiceTest, VerifyReadResponse) {
+  // Test that properly formatted response with good response code returns true
+  // as expected.
+  WebHistoryService::CompletionCallback completion_callback;
+  scoped_ptr<WebHistoryService::Request> request(
+      new TestRequest(
+          profile(),
+          GURL("http://history.google.com/"),
+          completion_callback,
+          net::HTTP_OK, /* response code */
+          "{\n" /* response body */
+          "  \"history_recording_enabled\": true\n"
+          "}"));
+  scoped_ptr<base::DictionaryValue> response_value;
+  // ReadResponse deletes the request
+  response_value = TestingWebHistoryService::ReadResponse(request.get());
+  bool enabled_value = false;
+  response_value->GetBoolean("history_recording_enabled", &enabled_value);
+  EXPECT_TRUE(enabled_value);
+
+  // Test that properly formatted response with good response code returns false
+  // as expected.
+  scoped_ptr<WebHistoryService::Request> request2(
+      new TestRequest(
+          profile(),
+          GURL("http://history.google.com/"),
+          completion_callback,
+          net::HTTP_OK,
+          "{\n"
+          "  \"history_recording_enabled\": false\n"
+          "}"));
+  scoped_ptr<base::DictionaryValue> response_value2;
+  // ReadResponse deletes the request
+  response_value2 = TestingWebHistoryService::ReadResponse(request2.get());
+  enabled_value = true;
+  response_value2->GetBoolean("history_recording_enabled", &enabled_value);
+  EXPECT_FALSE(enabled_value);
+
+  // Test that a bad response code returns false.
+  scoped_ptr<WebHistoryService::Request> request3(
+      new TestRequest(
+          profile(),
+          GURL("http://history.google.com/"),
+          completion_callback,
+          net::HTTP_UNAUTHORIZED,
+          "{\n"
+          "  \"history_recording_enabled\": true\n"
+          "}"));
+  scoped_ptr<base::DictionaryValue> response_value3;
+  // ReadResponse deletes the request
+  response_value3 = TestingWebHistoryService::ReadResponse(request3.get());
+  EXPECT_FALSE(response_value3);
+
+  // Test that improperly formatted response returns false.
+  // Note: we expect to see a warning when running this test similar to
+  //   "Non-JSON response received from history server".
+  // This test tests how that situation is handled.
+  scoped_ptr<WebHistoryService::Request> request4(
+      new TestRequest(
+          profile(),
+          GURL("http://history.google.com/"),
+          completion_callback,
+          net::HTTP_OK,
+          "{\n"
+          "  \"history_recording_enabled\": not true\n"
+          "}"));
+  scoped_ptr<base::DictionaryValue> response_value4;
+  // ReadResponse deletes the request
+  response_value4 = TestingWebHistoryService::ReadResponse(request4.get());
+  EXPECT_FALSE(response_value4);
+
+  // Test that improperly formatted response returns false.
+  scoped_ptr<WebHistoryService::Request> request5(
+      new TestRequest(
+          profile(),
+          GURL("http://history.google.com/"),
+          completion_callback,
+          net::HTTP_OK,
+          "{\n"
+          "  \"history_recording\": true\n"
+          "}"));
+  scoped_ptr<base::DictionaryValue> response_value5;
+  // ReadResponse deletes the request
+  response_value5 = TestingWebHistoryService::ReadResponse(request5.get());
+  enabled_value = true;
+  EXPECT_FALSE(response_value5->GetBoolean("history_recording_enabled",
+                                           &enabled_value));
+  EXPECT_TRUE(enabled_value);
+}