Index: base/gmock_unittest.cc |
diff --git a/base/gmock_unittest.cc b/base/gmock_unittest.cc |
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+// Copyright (c) 2009 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. |
+// |
+// This test is a simple sanity check to make sure gmock is able to build/link |
+// correctly. It just instantiates a mock object and runs through a couple of |
+// the basic mock features. |
+ |
+#include "testing/gmock/include/gmock/gmock.h" |
+#include "testing/gtest/include/gtest/gtest.h" |
+ |
+// Gmock matchers and actions that we use below. |
+using testing::AnyOf; |
+using testing::Eq; |
+using testing::Return; |
+using testing::SetArgumentPointee; |
+using testing::WithArg; |
+using testing::_; |
+ |
+namespace { |
+ |
+// Simple class that we can mock out the behavior for. Everything is virtual |
+// for easy mocking. |
+class SampleClass { |
+ public: |
+ SampleClass() {} |
+ virtual ~SampleClass() {} |
+ |
+ virtual int ReturnSomething() { |
+ return -1; |
+ } |
+ |
+ virtual void ReturnNothingConstly() const { |
+ } |
+ |
+ virtual void OutputParam(int* a) { |
+ } |
+ |
+ virtual int ReturnSecond(int a, int b) { |
+ return b; |
+ } |
+}; |
+ |
+// Declare a mock for the class. |
+class MockSampleClass : public SampleClass { |
+ public: |
+ MOCK_METHOD0(ReturnSomething, int()); |
+ MOCK_CONST_METHOD0(ReturnNothingConstly, void()); |
+ MOCK_METHOD1(OutputParam, void(int* a)); |
+ MOCK_METHOD2(ReturnSecond, int(int a, int b)); |
+}; |
+ |
+// Create a couple of custom actions. Custom actions can be used for adding |
+// more complex behavior into your mock...though if you start needing these, ask |
+// if you're asking your mock to do too much. |
+ACTION(ReturnVal) { |
+ // Return the first argument received. |
+ return arg0; |
+} |
+ACTION(ReturnSecond) { |
+ // Returns the second argument. This basically implemetns ReturnSecond. |
+ return arg1; |
+} |
+ |
+TEST(GmockTest, SimpleMatchAndActions) { |
+ // Basic test of some simple gmock matchers, actions, and cardinality |
+ // expectations. |
+ MockSampleClass mock; |
+ |
+ EXPECT_CALL(mock, ReturnSomething()) |
+ .WillOnce(Return(1)) |
+ .WillOnce(Return(2)) |
+ .WillOnce(Return(3)); |
+ EXPECT_EQ(1, mock.ReturnSomething()); |
+ EXPECT_EQ(2, mock.ReturnSomething()); |
+ EXPECT_EQ(3, mock.ReturnSomething()); |
+ |
+ EXPECT_CALL(mock, ReturnNothingConstly()).Times(2); |
+ mock.ReturnNothingConstly(); |
+ mock.ReturnNothingConstly(); |
+} |
+ |
+TEST(GmockTest, AssignArgument) { |
+ // Capture an argument for examination. |
+ MockSampleClass mock; |
+ |
+ EXPECT_CALL(mock, OutputParam(_)) |
+ .WillRepeatedly(SetArgumentPointee<0>(5)); |
+ |
+ int arg = 0; |
+ mock.OutputParam(&arg); |
+ EXPECT_EQ(5, arg); |
+} |
+ |
+TEST(GmockTest, SideEffects) { |
+ // Capture an argument for examination. |
+ MockSampleClass mock; |
+ |
+ EXPECT_CALL(mock, OutputParam(_)) |
+ .WillRepeatedly(SetArgumentPointee<0>(5)); |
+ |
+ int arg = 0; |
+ mock.OutputParam(&arg); |
+ EXPECT_EQ(5, arg); |
+} |
+ |
+TEST(GmockTest, CustomAction_ReturnSecond) { |
+ // Test a mock of the ReturnSecond behavior using an action that provides an |
+ // alternate implementation of the function. Danger here though, this is |
+ // starting to add too much behavior of the mock, which means the mock |
+ // implementation might start to have bugs itself. |
+ MockSampleClass mock; |
+ |
+ EXPECT_CALL(mock, ReturnSecond(_, AnyOf(Eq(4), Eq(5)))) |
+ .WillRepeatedly(ReturnSecond()); |
+ EXPECT_EQ(4, mock.ReturnSecond(-1, 4)); |
+ EXPECT_EQ(5, mock.ReturnSecond(0, 5)); |
+ EXPECT_EQ(4, mock.ReturnSecond(0xdeadbeef, 4)); |
+ EXPECT_EQ(4, mock.ReturnSecond(112358, 4)); |
+ EXPECT_EQ(5, mock.ReturnSecond(1337, 5)); |
+} |
+ |
+TEST(GmockTest, CustomAction_ReturnVal) { |
+ // Alternate implemention of ReturnSecond using a more general custom action, |
+ // and a WithArg adapter to bridge the interfaces. |
+ MockSampleClass mock; |
+ |
+ EXPECT_CALL(mock, ReturnSecond(_, AnyOf(Eq(4), Eq(5)))) |
+ .WillRepeatedly(WithArg<1>(ReturnVal())); |
+ EXPECT_EQ(4, mock.ReturnSecond(-1, 4)); |
+ EXPECT_EQ(5, mock.ReturnSecond(0, 5)); |
+ EXPECT_EQ(4, mock.ReturnSecond(0xdeadbeef, 4)); |
+ EXPECT_EQ(4, mock.ReturnSecond(112358, 4)); |
+ EXPECT_EQ(5, mock.ReturnSecond(1337, 5)); |
+} |
+ |
+} // namespace |