Activate the VariationsService for ChromeOS and ensure that it does not ping the server until the E…

chrome/browser/metrics/variations/resource_request_allowed_notifier_unittest.cc

+// 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.
+
+#include "chrome/browser/metrics/variations/resource_request_allowed_notifier.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/test/base/testing_browser_process.h"
+#include "chrome/test/base/testing_pref_service.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/test/test_browser_thread.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+// A test class used to validate expected functionality in
+// ResourceRequestAllowedNotifier.
+class TestRequesterService : public ResourceRequestAllowedNotifier::Observer {
+ public:
+  TestRequesterService() : was_notified_(false) {
+    resource_request_allowed_notifier_.SetObserver(this);
+  }
+
+  virtual ~TestRequesterService() {
+    resource_request_allowed_notifier_.ClearObserver();
+  }
+
+  void SetWasWaitingForNetworkForTesting(bool waiting) {
+    resource_request_allowed_notifier_.
+        SetWasWaitingForNetworkForTesting(waiting);
+  }
+
+#if defined(OS_CHROMEOS)
+  void SetWasWaitingForEulaForTesting(bool waiting) {
+    resource_request_allowed_notifier_.
+        SetWasWaitingForEulaForTesting(waiting);
+  }
+#endif
+
+  bool request_attempted() const { return was_notified_; }
+
+  // ResourceRequestAllowedNotifier::Observer overrides:
+  virtual void OnResourceRequestsAllowed() OVERRIDE {
+    was_notified_ = true;
+  }
+
+ private:
+  bool was_notified_;
+
+  ResourceRequestAllowedNotifier resource_request_allowed_notifier_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestRequesterService);
+};
+
+// Override NetworkChangeNotifier to simulate connection type changes for tests.
+class TestNetworkChangeNotifier : public net::NetworkChangeNotifier {
+ public:
+  TestNetworkChangeNotifier()
+    : net::NetworkChangeNotifier(),
+      connection_type_to_return_(
+          net::NetworkChangeNotifier::CONNECTION_UNKNOWN) {
+  }
+
+  void SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::ConnectionType type) {
+    connection_type_to_return_ = type;
+    net::NetworkChangeNotifier::NotifyObserversOfConnectionTypeChange();
+    MessageLoop::current()->RunAllPending();
+  }
+
+ private:
+  virtual ConnectionType GetCurrentConnectionType() const OVERRIDE {
+    return connection_type_to_return_;
+  }
+
+  net::NetworkChangeNotifier::ConnectionType connection_type_to_return_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestNetworkChangeNotifier);
+};
+
+// A test fixture class for ResourceRequestAllowedNotifier tests that require
+// network state simulations.
+class ResourceRequestAllowedNotifierTest : public testing::Test {
+ public:
+  ResourceRequestAllowedNotifierTest()
+    : scoped_testing_local_state_(
+          static_cast<TestingBrowserProcess*>(g_browser_process)),
+      local_state_(scoped_testing_local_state_.Get()),
+      ui_thread(content::BrowserThread::UI, &message_loop) { }
+  ~ResourceRequestAllowedNotifierTest() { }
+
+  void SetWasWaitingForNetwork(bool waiting) {
+    test_service.SetWasWaitingForNetworkForTesting(waiting);
+  }
+
+  void SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::ConnectionType type) {
+    notifier.SimulateNetworkConnectionChange(type);
+  }
+
+  bool request_attempted() const {
+    return test_service.request_attempted();
+  }
+
+#if defined(OS_CHROMEOS)
+  void SetEulaAcceptedPref(bool accepted) {
+    // TODO(stevet): Share this string with the wizard_controller file that
+    // defines it.
+    local_state_->SetUserPref("EulaAccepted",

[Alexei Svitkine (slow), 2012/09/19 19:44:28]

Can you instead wrap chromeos::WizardController::IsEulaAccepted() in a virtual
method on ResourceRequestAllowedNotifier?

Then, the test instance of that class could override it and the test wouldn't
have to know about implementation-specific details of the Wizard (i.e. where it
stores the pref).

[SteveT, 2012/09/20 19:40:18]

Done. Note that this made fairly substantial changes to the testing code (and
some of the base code).

One change of note is that we now call IsEulaAccepted from the newly-added Init
method rather than the ctor due to the issue with calling virtuals from the
ctor. Let me know if that is not acceptable.

+                              Value::CreateBooleanValue(accepted));
+  }
+
+  void SetWasWaitingForEula(bool waiting) {
+    test_service.SetWasWaitingForEulaForTesting(waiting);
+  }
+
+  void SimulateEulaAccepted() {
+    SetEulaAcceptedPref(true);
+    content::NotificationService::current()->Notify(
+        chrome::NOTIFICATION_WIZARD_EULA_ACCEPTED,
+        content::NotificationService::AllSources(),
+        content::NotificationService::NoDetails());
+  }
+
+  void SetUp() {
+    // Set default EULA state to done (not waiting and EULA accepted) to
+    // simplify non-ChromeOS tests.
+    SetWasWaitingForEula(false);
+    SetEulaAcceptedPref(true);
+  }
+#endif
+
+ private:
+  MessageLoopForUI message_loop;
+  ScopedTestingLocalState scoped_testing_local_state_;
+  TestingPrefService* local_state_;
+  content::TestBrowserThread ui_thread;
+  TestNetworkChangeNotifier notifier;
+  TestRequesterService test_service;
+
+  DISALLOW_COPY_AND_ASSIGN(ResourceRequestAllowedNotifierTest);
+};
+
+TEST_F(ResourceRequestAllowedNotifierTest, DoNotRequestIfOffline) {
+  SetWasWaitingForNetwork(true);
+  SimulateNetworkConnectionChange(net::NetworkChangeNotifier::CONNECTION_NONE);
+  EXPECT_FALSE(request_attempted());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, DoNotRequestIfOnlineToOnline) {
+  SetWasWaitingForNetwork(false);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_ETHERNET);
+  EXPECT_FALSE(request_attempted());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, RequestOnReconnect) {
+  SetWasWaitingForNetwork(true);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_ETHERNET);
+  EXPECT_TRUE(request_attempted());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NoRequestOnWardriving) {
+  SetWasWaitingForNetwork(false);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(request_attempted());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_3G);
+  EXPECT_FALSE(request_attempted());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_4G);
+  EXPECT_FALSE(request_attempted());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(request_attempted());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NoRequestOnFlakyConnection) {
+  SetWasWaitingForNetwork(false);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(request_attempted());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_NONE);
+  EXPECT_FALSE(request_attempted());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(request_attempted());
+}
+
+#if defined(OS_CHROMEOS)
+TEST_F(ResourceRequestAllowedNotifierTest, EulaOnly) {
+  SetWasWaitingForNetwork(true);
+  SetEulaAcceptedPref(false);
+  SimulateEulaAccepted();
+  EXPECT_FALSE(request_attempted());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, EulaFirst) {
+  SetWasWaitingForNetwork(true);
+  SetEulaAcceptedPref(false);
+  SimulateEulaAccepted();
+  EXPECT_FALSE(request_attempted());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_TRUE(request_attempted());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NetworkFirst) {
+  SetWasWaitingForNetwork(true);
+  SetWasWaitingForEula(true);
+  SetEulaAcceptedPref(false);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(request_attempted());
+  SimulateEulaAccepted();
+  EXPECT_TRUE(request_attempted());
+}
+#endif  // OS_CHROMEOS