Add LogoutConfirmationController to show LogoutConfirmationDialogs

ash/system/session/logout_confirmation_controller_unittest.cc

Index: ash/system/session/logout_confirmation_controller_unittest.cc
diff --git a/ash/system/session/logout_confirmation_controller_unittest.cc b/ash/system/session/logout_confirmation_controller_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a11ee3afd5ad8ff2cb0c113f77f0d942bc019d51
--- /dev/null
+++ b/ash/system/session/logout_confirmation_controller_unittest.cc
@@ -0,0 +1,293 @@
+// 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 "ash/system/session/logout_confirmation_controller.h"
+
+#include <queue>
+#include <utility>
+#include <vector>
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/compiler_specific.h"
+#include "base/location.h"
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
+#include "base/thread_task_runner_handle.h"
+#include "base/time/tick_clock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace ash {
+namespace internal {
+
+namespace {
+
+// A SingleThreadTaskRunner that mocks the current time and allows it to be
+// fast-forwarded. TODO(bartfab): Copies of this class exist in several tests.
+// Consolidate them (crbug.com/329911).
+class MockTimeSingleThreadTaskRunner : public base::SingleThreadTaskRunner {
+ public:
+  MockTimeSingleThreadTaskRunner();
+
+  // base::SingleThreadTaskRunner:
+  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
+  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
+                               const base::Closure& task,
+                               base::TimeDelta delay) OVERRIDE;
+  virtual bool PostNonNestableDelayedTask(
+      const tracked_objects::Location& from_here,
+      const base::Closure& task,
+      base::TimeDelta delay) OVERRIDE;
+
+  const base::TimeTicks& GetCurrentTime() const;
+
+  void FastForwardBy(base::TimeDelta delta);
+  void FastForwardUntilNoTasksRemain();
+
+ private:
+  // Strict weak temporal ordering of tasks.
+  class TemporalOrder {
+   public:
+    bool operator()(
+        const std::pair<base::TimeTicks, base::Closure>& first_task,
+        const std::pair<base::TimeTicks, base::Closure>& second_task) const;
+  };
+
+  virtual ~MockTimeSingleThreadTaskRunner();
+
+  base::TimeTicks now_;
+  std::priority_queue<std::pair<base::TimeTicks, base::Closure>,
+                      std::vector<std::pair<base::TimeTicks, base::Closure> >,
+                      TemporalOrder> tasks_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockTimeSingleThreadTaskRunner);
+};
+
+// A base::TickClock that uses a MockTimeSingleThreadTaskRunner as the source of
+// the current time.
+class MockClock : public base::TickClock {
+ public:
+  explicit MockClock(scoped_refptr<MockTimeSingleThreadTaskRunner> task_runner);
+  virtual ~MockClock();
+
+  // base::TickClock:
+  virtual base::TimeTicks NowTicks() OVERRIDE;
+
+ private:
+  scoped_refptr<MockTimeSingleThreadTaskRunner> task_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockClock);
+};
+
+
+MockTimeSingleThreadTaskRunner::MockTimeSingleThreadTaskRunner() {
+}
+
+bool MockTimeSingleThreadTaskRunner::RunsTasksOnCurrentThread() const {
+  return true;
+}
+
+bool MockTimeSingleThreadTaskRunner::PostDelayedTask(
+    const tracked_objects::Location& from_here,
+    const base::Closure& task,
+    base::TimeDelta delay) {
+  tasks_.push(std::make_pair(now_ + delay, task));
+  return true;
+}
+
+bool MockTimeSingleThreadTaskRunner::PostNonNestableDelayedTask(
+    const tracked_objects::Location& from_here,
+    const base::Closure& task,
+    base::TimeDelta delay) {
+  NOTREACHED();
+  return false;
+}
+
+const base::TimeTicks& MockTimeSingleThreadTaskRunner::GetCurrentTime() const {
+  return now_;
+}
+
+void MockTimeSingleThreadTaskRunner::FastForwardBy(base::TimeDelta delta) {
+  const base::TimeTicks latest = now_ + delta;
+  while (!tasks_.empty() && tasks_.top().first <= latest) {
+    now_ = tasks_.top().first;
+    base::Closure task = tasks_.top().second;
+    tasks_.pop();
+    task.Run();
+  }
+  now_ = latest;
+}
+
+void MockTimeSingleThreadTaskRunner::FastForwardUntilNoTasksRemain() {
+  while (!tasks_.empty()) {
+    now_ = tasks_.top().first;
+    base::Closure task = tasks_.top().second;
+    tasks_.pop();
+    task.Run();
+  }
+}
+
+bool MockTimeSingleThreadTaskRunner::TemporalOrder::operator()(
+    const std::pair<base::TimeTicks, base::Closure>& first_task,
+    const std::pair<base::TimeTicks, base::Closure>& second_task) const {
+  return first_task.first > second_task.first;
+}
+
+MockTimeSingleThreadTaskRunner::~MockTimeSingleThreadTaskRunner() {
+}
+
+MockClock::MockClock(scoped_refptr<MockTimeSingleThreadTaskRunner> task_runner)
+    : task_runner_(task_runner) {
+}
+
+MockClock::~MockClock() {
+}
+
+base::TimeTicks MockClock::NowTicks() {
+  return task_runner_->GetCurrentTime();
+}
+
+}  // namespace
+
+class LogoutConfirmationControllerTest : public testing::Test {
+ protected:
+  LogoutConfirmationControllerTest();
+  virtual ~LogoutConfirmationControllerTest();
+
+  void LogOut();
+
+  bool log_out_called_;
+
+  scoped_refptr<MockTimeSingleThreadTaskRunner> runner_;
+  base::ThreadTaskRunnerHandle runner_handle_;
+
+  LogoutConfirmationController controller_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(LogoutConfirmationControllerTest);
+};
+
+LogoutConfirmationControllerTest::LogoutConfirmationControllerTest()
+    : log_out_called_(false),
+      runner_(new MockTimeSingleThreadTaskRunner),
+      runner_handle_(runner_),
+      controller_(base::Bind(&LogoutConfirmationControllerTest::LogOut,
+                             base::Unretained(this))) {
+  controller_.SetClockForTesting(
+      scoped_ptr<base::TickClock>(new MockClock(runner_)));
+}
+
+LogoutConfirmationControllerTest::~LogoutConfirmationControllerTest() {
+}
+
+void LogoutConfirmationControllerTest::LogOut() {
+  log_out_called_ = true;
+}
+
+// Verifies that the user is logged out immediately if logout confirmation with
+// a zero-length countdown is requested.
+TEST_F(LogoutConfirmationControllerTest, ZeroDuration) {
+  controller_.ConfirmLogout(runner_->GetCurrentTime());
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta());
+  EXPECT_TRUE(log_out_called_);
+}
+
+// Verifies that the user is logged out when the countdown expires.
+TEST_F(LogoutConfirmationControllerTest, DurationExpired) {
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(9));
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
+  EXPECT_TRUE(log_out_called_);
+}
+
+// Verifies that when a second request to confirm logout is made and the second
+// request's countdown ends before the original request's, the user is logged
+// out when the new countdown expires.
+TEST_F(LogoutConfirmationControllerTest, DurationShortened) {
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(30));
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(9));
+  EXPECT_FALSE(log_out_called_);
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(9));
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
+  EXPECT_TRUE(log_out_called_);
+}
+
+// Verifies that when a second request to confirm logout is made and the second
+// request's countdown ends after the original request's, the user is logged
+// out when the original countdown expires.
+TEST_F(LogoutConfirmationControllerTest, DurationExtended) {
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(9));
+  EXPECT_FALSE(log_out_called_);
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
+  EXPECT_TRUE(log_out_called_);
+}
+
+// Verifies that when the screen is locked while the countdown is running, the
+// user is not logged out, even when the original countdown expires.
+TEST_F(LogoutConfirmationControllerTest, Lock) {
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  EXPECT_FALSE(log_out_called_);
+  controller_.OnLockStateChanged(true);
+  runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_FALSE(log_out_called_);
+}
+
+// Verifies that when the user confirms the logout request, the user is logged
+// out immediately.
+TEST_F(LogoutConfirmationControllerTest, UserAccepted) {
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  EXPECT_FALSE(log_out_called_);
+  controller_.OnLogoutConfirmed();
+  EXPECT_TRUE(log_out_called_);
+}
+
+// Verifies that when the user denies the logout request, the user is not logged
+// out, even when the original countdown expires.
+TEST_F(LogoutConfirmationControllerTest, UserDenied) {
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  EXPECT_FALSE(log_out_called_);
+  controller_.OnDialogClosed();
+  runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_FALSE(log_out_called_);
+}
+
+// Verifies that after the user has denied a logout request, a subsequent logout
+// request is handled correctly and the user is logged out when the countdown
+// expires.
+TEST_F(LogoutConfirmationControllerTest, DurationExpiredAfterDeniedRequest) {
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  EXPECT_FALSE(log_out_called_);
+  controller_.OnDialogClosed();
+  runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_FALSE(log_out_called_);
+
+  controller_.ConfirmLogout(
+      runner_->GetCurrentTime() + base::TimeDelta::FromSeconds(10));
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(9));
+  EXPECT_FALSE(log_out_called_);
+  runner_->FastForwardBy(base::TimeDelta::FromSeconds(2));
+  EXPECT_TRUE(log_out_called_);
+}
+
+}  // namespace internal
+}  // namespace ash