googletest 和 googlemock 的环境搭建

在很久以前, googletest ( 后面简称 gtest ) 和 googlemock ( 后面简称 gmock ) 仓库还没有合并, 他们分别对应 Github 的不同仓库, 不过现在他们都合并到了 gtest 仓库

• gtest 的 Github 仓库

现在我来教大家如何搭建 gtest 和 gmock 的环境

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下载 gtest 源码

• 执行以下命令下载 gtest 的源码 ( 我使用 release-1.10.0 版本 )

  git clone --branch release-1.10.0 https://github.com/google/googletest.git
  

编译配置

• 进入下载的目录 ( 我的目录是 googletest-release-1.10.0 ) ( 注意: 根据实际情况 cd + 目录名 )

  cd googletest-release-1.10.0
  

• 依次执行以下命令生成所需要的文件

  sudo cmake CMakeLists.txt
  sudo make
  

• 拷贝链接文件

  sudo cp lib/*.a /usr/lib
  

• 拷贝include文件

  sudo cp -a googletest/include/gtest/ /usr/include/
  sudo cp -a googlemock/include/gmock/ /usr/include/
  

• 到此为止, 你就就装好 gtest 和 gmock 了 !

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验证

• 验证稍微复杂一点, 因为你要编写一个源代码去验证
• 首先你得有 C/C++ 的编译环境 ( 这儿不详细描述 )

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验证 gtest

• 新建 test_gtest.cpp 文件, 内容如下

  #include 
  #include
  
  using namespace std;
  
  class test_gtest : public testing::Test
  {
  protected:
      static void SetUpTestCase()
      {
          cout << "> Before each test case are executed" << endl;
      }
      static void TearDownTestCase()
      {
          cout << "> After each test case are executed" << endl;
      }
      virtual void SetUp()
      {
          cout << "> Before all test cases are executed" << endl;
      }
      virtual void TearDown()
      {
          cout << "> After all test cases are executed" << endl;
      }
  };
  
  int main(int argc,char **argv)
  {
      testing::GTEST_FLAG(output) = "xml:";   // save xml
      testing::InitGoogleTest(&argc,argv);
      return RUN_ALL_TESTS();
  }
  
  /* return a + b */
  int add(int a, int b)
  {
      return a + b;
  }
  
  TEST_F(test_gtest, test0)
  {
      EXPECT_EQ(add(3, 4), 7) << "> add() error";
  }
  

• 执行一下命令编译 生成可执行文件 test_gtest.bin

  g++ test_gtest.cpp -lgtest -lpthread -o test_gtest.bin
  

• 执行程序

  ./test_gtest.bin
  

• 最后打印如下信息, 那说明 gtest 配置正确

  [==========] Running 1 test from 1 test suite.
  [----------] Global test environment set-up.
  [----------] 1 test from test_gtest
  > Before each test case are executed
  [ RUN      ] test_gtest.test0
  > Before all test cases are executed
  > After all test cases are executed
  [       OK ] test_gtest.test0 (0 ms)
  > After each test case are executed
  [----------] 1 test from test_gtest (0 ms total)
  
  [----------] Global test environment tear-down
  [==========] 1 test from 1 test suite ran. (1 ms total)
  [  PASSED  ] 1 test.
  

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验证 gmock

• 新建 test_gmock.cpp 文件, 内容如下

  #include 
  #include 
  #include 
  #include 
  #include 
  using namespace std;
  using namespace testing;
  
  class Student
  {
      public:
      virtual ~Student() {}
      virtual int getAge(string name) = 0;
  };
  
  class MockStudent : public Student
  {
      public:
      MOCK_METHOD1(getAge, int(string name));
  };
  
  int main(int argc, char **argv)
  {
      testing::InitGoogleMock(&argc, argv);
      return RUN_ALL_TESTS();
  }
  
  TEST(test_gmock, test0)
  {
      MockStudent XiaoMing;
      EXPECT_CALL(XiaoMing, getAge(_))
          .Times(AtLeast(3))
          .WillOnce(Return(18))
          .WillRepeatedly(Return(19));
  
      cout << "2020-02-03 : " << XiaoMing.getAge("XiaoMing") << endl;
      cout << "2020-02-04 : " << XiaoMing.getAge("XiaoMing") << endl;
      cout << "2020-02-05 : " << XiaoMing.getAge("XiaoMing") << endl;
      cout << "2020-02-06 : " << XiaoMing.getAge("XiaoMing") << endl;
      cout << "2020-02-07 : " << XiaoMing.getAge("XiaoMing") << endl;
  }
  

• 执行一下命令编译 生成可执行文件 test_gmock.bin

  g++ test_gmock.cpp -lgmock -lgtest -lpthread -o test_gmock.bin
  

• 执行程序

  ./test_gmock.bin
  

• 最后打印如下信息, 那说明 gmock 配置正确

  [==========] Running 1 test from 1 test suite.
  [----------] Global test environment set-up.
  [----------] 1 test from test_gmock
  [ RUN      ] test_gmock.test0
  2020-02-03 : 18
  2020-02-04 : 19
  2020-02-05 : 19
  2020-02-06 : 19
  2020-02-07 : 19
  [       OK ] test_gmock.test0 (0 ms)
  [----------] 1 test from test_gmock (0 ms total)
  
  [----------] Global test environment tear-down
  [==========] 1 test from 1 test suite ran. (0 ms total)
  [  PASSED  ] 1 test
  

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