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_test_util.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"
+
+// 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) {
+  }
+
+  // Simulates a change of the connection type to |type|. This will notify any
+  // objects that are NetworkChangeNotifiers.
+  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_;
+  }
+
+  // The currently simulated network connection type. If this is set to
+  // CONNECTION_NONE, then NetworkChangeNotifier::IsOffline will return true.
+  net::NetworkChangeNotifier::ConnectionType connection_type_to_return_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestNetworkChangeNotifier);
+};
+
+// A test fixture class for ResourceRequestAllowedNotifier tests that require
+// network state simulations. This also acts as the service implementing the
+// ResourceRequestAllowedNotifier::Observer interface.
+class ResourceRequestAllowedNotifierTest
+    : public testing::Test,
+      public ResourceRequestAllowedNotifier::Observer {
+ public:
+  ResourceRequestAllowedNotifierTest()
+    : ui_thread(content::BrowserThread::UI, &message_loop),
+      was_notified_(false) {
+#if defined(OS_CHROMEOS)
+    // Set this flag to true so the Init call sets up the wait on the EULA.
+    SetNeedsEulaAcceptance(true);
+#endif
+    resource_request_allowed_notifier_.Init(this);
+  }
+  ~ResourceRequestAllowedNotifierTest() { }
+
+  bool was_notified() const { return was_notified_; }
+
+  // ResourceRequestAllowedNotifier::Observer override:
+  virtual void OnResourceRequestsAllowed() OVERRIDE {
+    was_notified_ = true;
+  }
+
+  // Network manipulation methods:
+  void SetWasWaitingForNetwork(bool waiting) {
+    resource_request_allowed_notifier_.
+        SetWasWaitingForNetworkForTesting(waiting);
+  }
+
+  void SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::ConnectionType type) {
+    network_notifier.SimulateNetworkConnectionChange(type);
+  }
+
+  void SetObserverRequestedPermission(bool requested) {
+    resource_request_allowed_notifier_.
+        SetObserverRequestedPermissionForTesting(requested);
+  }
+
+#if defined(OS_CHROMEOS)
+  // Eula manipulation methods:
+  void SetNeedsEulaAcceptance(bool needs_acceptance) {
+    resource_request_allowed_notifier_.SetNeedsEulaAcceptance(needs_acceptance);
+  }
+
+  void SetWasWaitingForEula(bool waiting) {
+    resource_request_allowed_notifier_.SetWasWaitingForEulaForTesting(waiting);
+  }
+
+  void SimulateEulaAccepted() {
+    SetNeedsEulaAcceptance(false);
+    content::NotificationService::current()->Notify(
+        chrome::NOTIFICATION_WIZARD_EULA_ACCEPTED,
+        content::NotificationService::AllSources(),
+        content::NotificationService::NoDetails());
+  }
+
+  // Used in tests involving the EULA. Disables both the EULA accepted state
+  // and the network.
+  void DisableEulaAndNetwork() {
+    SetWasWaitingForNetwork(true);
+    SimulateNetworkConnectionChange(
+        net::NetworkChangeNotifier::CONNECTION_NONE);
+    SetWasWaitingForEula(true);
+    SetNeedsEulaAcceptance(true);
+  }
+#endif
+
+  virtual void SetUp() OVERRIDE {
+    // Assume the test service has already requested permission, as all tests
+    // just test that criteria changes notify the server.
+    SetObserverRequestedPermission(true);

[Alexei Svitkine (slow), 2012/09/24 20:47:05]

I would suggest to default to false and have tests actually request it, so that
the behaviour being tested is clearer.

[SteveT, 2012/09/24 23:30:37]

N/A after your comment about getting rid of
SetObserverRequestedPermissionForTesting.

+#if defined(OS_CHROMEOS)
+    // Set default EULA state to done (not waiting and EULA accepted) to
+    // simplify non-ChromeOS tests.
+    SetWasWaitingForEula(false);
+    SetNeedsEulaAcceptance(false);
+#endif
+  }
+
+ private:
+  MessageLoopForUI message_loop;
+  content::TestBrowserThread ui_thread;
+  TestNetworkChangeNotifier network_notifier;
+  TestRequestAllowedNotifier resource_request_allowed_notifier_;
+  bool was_notified_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResourceRequestAllowedNotifierTest);
+};
+
+TEST_F(ResourceRequestAllowedNotifierTest, DoNotNotifyIfOffline) {
+  SetWasWaitingForNetwork(true);
+  SimulateNetworkConnectionChange(net::NetworkChangeNotifier::CONNECTION_NONE);
+  EXPECT_FALSE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, DoNotNotifyIfOnlineToOnline) {
+  SetWasWaitingForNetwork(false);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_ETHERNET);
+  EXPECT_FALSE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NotifyOnReconnect) {
+  SetWasWaitingForNetwork(true);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_ETHERNET);
+  EXPECT_TRUE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NoNotifyOnWardriving) {
+  SetWasWaitingForNetwork(false);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(was_notified());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_3G);
+  EXPECT_FALSE(was_notified());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_4G);
+  EXPECT_FALSE(was_notified());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NoNotifyOnFlakyConnection) {
+  SetWasWaitingForNetwork(false);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(was_notified());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_NONE);
+  EXPECT_FALSE(was_notified());
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NoRequestNoNotify) {
+  // Ensure that if the observing service does not request access, it does not
+  // get notified, even if the criteria is met.
+  SetObserverRequestedPermission(false);
+  SetWasWaitingForNetwork(true);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_ETHERNET);
+  EXPECT_FALSE(was_notified());
+}
+
+#if defined(OS_CHROMEOS)
+TEST_F(ResourceRequestAllowedNotifierTest, EulaOnlyNetworkOffline) {
+  DisableEulaAndNetwork();
+
+  SimulateEulaAccepted();
+  EXPECT_FALSE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, EulaFirst) {
+  DisableEulaAndNetwork();
+
+  SimulateEulaAccepted();
+  EXPECT_FALSE(was_notified());
+
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_TRUE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NetworkFirst) {
+  SetWasWaitingForNetwork(true);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_NONE);
+  SetWasWaitingForEula(true);
+  SetNeedsEulaAcceptance(true);
+
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(was_notified());
+
+  SimulateEulaAccepted();
+  EXPECT_TRUE(was_notified());
+}
+
+TEST_F(ResourceRequestAllowedNotifierTest, NoRequestNoNotifyEula) {
+  SetObserverRequestedPermission(false);
+  SetWasWaitingForNetwork(true);
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_NONE);
+  SetWasWaitingForEula(true);
+  SetNeedsEulaAcceptance(true);
+
+  SimulateNetworkConnectionChange(
+      net::NetworkChangeNotifier::CONNECTION_WIFI);
+  EXPECT_FALSE(was_notified());
+
+  SimulateEulaAccepted();
+  EXPECT_FALSE(was_notified());
+}
+#endif  // OS_CHROMEOS