Add RunCallback to invoke a callback parameter in unittests.

media/base/callback_util_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 "media/base/callback_util.h"
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::ByRef;
+using testing::MockFunction;
+
+namespace media {
+
+typedef base::Callback<void(const bool& src, bool* dst)> TestCallback;
+
+void SetBool(const bool& src, bool* dst) {
+  *dst = src;
+}
+
+TEST(CallbackUtilTest, IsNullCallback) {
+  MockFunction<void(const TestCallback&)> check;
+  EXPECT_CALL(check, Call(IsNullCallback()));
+  check.Call(TestCallback());
+}
+
+TEST(CallbackUtilTest, IsNotNullCallback) {
+  MockFunction<void(const TestCallback&)> check;
+  EXPECT_CALL(check, Call(IsNotNullCallback()));
+  check.Call(base::Bind(&SetBool));
+}
+
+TEST(CallbackUtilTest, RunClosure) {
+  MockFunction<void(const base::Closure&)> check;
+  bool dst = false;
+  EXPECT_CALL(check, Call(IsNotNullCallback()))
+      .WillOnce(RunClosure<0>());
+  check.Call(base::Bind(&SetBool, true, &dst));
+  EXPECT_TRUE(dst);
+}
+
+TEST(CallbackUtilTest, RunCallback0) {
+  MockFunction<void(const TestCallback&)> check;
+  bool dst = false;
+  EXPECT_CALL(check, Call(IsNotNullCallback()))
+      .WillOnce(RunCallback<0>(true, &dst));
+  check.Call(base::Bind(&SetBool));
+  EXPECT_TRUE(dst);
+}
+
+TEST(CallbackUtilTest, RunCallback1) {
+  MockFunction<void(int, const TestCallback&)> check;
+  bool dst = false;
+  EXPECT_CALL(check, Call(0, IsNotNullCallback()))
+      .WillOnce(RunCallback<1>(true, &dst));
+  check.Call(0, base::Bind(&SetBool));
+  EXPECT_TRUE(dst);
+}
+
+TEST(CallbackUtilTest, RunCallbackPassByRef) {
+  MockFunction<void(const TestCallback&)> check;
+  bool dst = false;
+  bool src = false;
+  EXPECT_CALL(check, Call(IsNotNullCallback()))
+      .WillOnce(RunCallback<0>(ByRef(src), &dst));
+  src = true;
+  check.Call(base::Bind(&SetBool));
+  EXPECT_TRUE(dst);
+}
+
+TEST(CallbackUtilTest, RunCallbackPassByValue) {
+  MockFunction<void(const TestCallback&)> check;
+  bool dst = false;
+  bool src = true;
+  EXPECT_CALL(check, Call(IsNotNullCallback()))
+      .WillOnce(RunCallback<0>(src, &dst));
+  src = false;
+  check.Call(base::Bind(&SetBool));
+  EXPECT_TRUE(dst);
+}
+
+}  // namespace media