Move base to DEPS

base/cancelable_callback_unittest.cc

-// Copyright (c) 2011 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 "base/cancelable_callback.h"
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/location.h"
-#include "base/memory/ref_counted.h"
-#include "base/run_loop.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace base {
-namespace {
-
-class TestRefCounted : public RefCountedThreadSafe<TestRefCounted> {
- private:
-  friend class RefCountedThreadSafe<TestRefCounted>;
-  ~TestRefCounted() {};
-};
-
-void Increment(int* count) { (*count)++; }
-void IncrementBy(int* count, int n) { (*count) += n; }
-void RefCountedParam(const scoped_refptr<TestRefCounted>& ref_counted) {}
-
-// Cancel().
-//  - Callback can be run multiple times.
-//  - After Cancel(), Run() completes but has no effect.
-TEST(CancelableCallbackTest, Cancel) {
-  int count = 0;
-  CancelableClosure cancelable(
-      base::Bind(&Increment, base::Unretained(&count)));
-
-  base::Closure callback = cancelable.callback();
-  callback.Run();
-  EXPECT_EQ(1, count);
-
-  callback.Run();
-  EXPECT_EQ(2, count);
-
-  cancelable.Cancel();
-  callback.Run();
-  EXPECT_EQ(2, count);
-}
-
-// Cancel() called multiple times.
-//  - Cancel() cancels all copies of the wrapped callback.
-//  - Calling Cancel() more than once has no effect.
-//  - After Cancel(), callback() returns a null callback.
-TEST(CancelableCallbackTest, MultipleCancel) {
-  int count = 0;
-  CancelableClosure cancelable(
-      base::Bind(&Increment, base::Unretained(&count)));
-
-  base::Closure callback1 = cancelable.callback();
-  base::Closure callback2 = cancelable.callback();
-  cancelable.Cancel();
-
-  callback1.Run();
-  EXPECT_EQ(0, count);
-
-  callback2.Run();
-  EXPECT_EQ(0, count);
-
-  // Calling Cancel() again has no effect.
-  cancelable.Cancel();
-
-  // callback() of a cancelled callback is null.
-  base::Closure callback3 = cancelable.callback();
-  EXPECT_TRUE(callback3.is_null());
-}
-
-// CancelableCallback destroyed before callback is run.
-//  - Destruction of CancelableCallback cancels outstanding callbacks.
-TEST(CancelableCallbackTest, CallbackCanceledOnDestruction) {
-  int count = 0;
-  base::Closure callback;
-
-  {
-    CancelableClosure cancelable(
-        base::Bind(&Increment, base::Unretained(&count)));
-
-    callback = cancelable.callback();
-    callback.Run();
-    EXPECT_EQ(1, count);
-  }
-
-  callback.Run();
-  EXPECT_EQ(1, count);
-}
-
-// Cancel() called on bound closure with a RefCounted parameter.
-//  - Cancel drops wrapped callback (and, implicitly, its bound arguments).
-TEST(CancelableCallbackTest, CancelDropsCallback) {
-  scoped_refptr<TestRefCounted> ref_counted = new TestRefCounted;
-  EXPECT_TRUE(ref_counted->HasOneRef());
-
-  CancelableClosure cancelable(base::Bind(RefCountedParam, ref_counted));
-  EXPECT_FALSE(cancelable.IsCancelled());
-  EXPECT_TRUE(ref_counted.get());
-  EXPECT_FALSE(ref_counted->HasOneRef());
-
-  // There is only one reference to |ref_counted| after the Cancel().
-  cancelable.Cancel();
-  EXPECT_TRUE(cancelable.IsCancelled());
-  EXPECT_TRUE(ref_counted.get());
-  EXPECT_TRUE(ref_counted->HasOneRef());
-}
-
-// Reset().
-//  - Reset() replaces the existing wrapped callback with a new callback.
-//  - Reset() deactivates outstanding callbacks.
-TEST(CancelableCallbackTest, Reset) {
-  int count = 0;
-  CancelableClosure cancelable(
-      base::Bind(&Increment, base::Unretained(&count)));
-
-  base::Closure callback = cancelable.callback();
-  callback.Run();
-  EXPECT_EQ(1, count);
-
-  callback.Run();
-  EXPECT_EQ(2, count);
-
-  cancelable.Reset(
-      base::Bind(&IncrementBy, base::Unretained(&count), 3));
-  EXPECT_FALSE(cancelable.IsCancelled());
-
-  // The stale copy of the cancelable callback is non-null.
-  ASSERT_FALSE(callback.is_null());
-
-  // The stale copy of the cancelable callback is no longer active.
-  callback.Run();
-  EXPECT_EQ(2, count);
-
-  base::Closure callback2 = cancelable.callback();
-  ASSERT_FALSE(callback2.is_null());
-
-  callback2.Run();
-  EXPECT_EQ(5, count);
-}
-
-// IsCanceled().
-//  - Cancel() transforms the CancelableCallback into a cancelled state.
-TEST(CancelableCallbackTest, IsNull) {
-  CancelableClosure cancelable;
-  EXPECT_TRUE(cancelable.IsCancelled());
-
-  int count = 0;
-  cancelable.Reset(base::Bind(&Increment,
-                              base::Unretained(&count)));
-  EXPECT_FALSE(cancelable.IsCancelled());
-
-  cancelable.Cancel();
-  EXPECT_TRUE(cancelable.IsCancelled());
-}
-
-// CancelableCallback posted to a MessageLoop with PostTask.
-//  - Callbacks posted to a MessageLoop can be cancelled.
-TEST(CancelableCallbackTest, PostTask) {
-  MessageLoop loop;
-
-  int count = 0;
-  CancelableClosure cancelable(base::Bind(&Increment,
-                                           base::Unretained(&count)));
-
-  ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, cancelable.callback());
-  RunLoop().RunUntilIdle();
-
-  EXPECT_EQ(1, count);
-
-  ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, cancelable.callback());
-
-  // Cancel before running the message loop.
-  cancelable.Cancel();
-  RunLoop().RunUntilIdle();
-
-  // Callback never ran due to cancellation; count is the same.
-  EXPECT_EQ(1, count);
-}
-
-}  // namespace
-}  // namespace base