单元测试

注意：所有附加的编译参数都是需要的。 gtest_main和gmock_main可以让测试者无需在为每次测试用例写入main函数。

[root@ubuntu0006:/media/hankin/vdb/unittest] #vim study_gtest.cpp
[root@ubuntu0006:/media/hankin/vdb/unittest] #g++ study_gtest.cpp -std=c++11 -lgtest_main -lgtest -lpthread
[root@ubuntu0006:/media/hankin/vdb/unittest] #./a.out
Running main() from /media/hankin/vdb/unittest/googletest-release-1.11.0/googletest/src/gtest_main.cc
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from sum
[ RUN      ] sum.testSum
study_gtest.cpp:11: Failure
Expected equality of these values:
  sum(1, 2)
    Which is: 3
[  FAILED  ] sum.testSum (0 ms)
[----------] 1 test from sum (0 ms total)
[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (1 ms total)
[  PASSED  ] 0 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] sum.testSum
 1 FAILED TEST
[root@ubuntu0006:/media/hankin/vdb/unittest] #vim study_gtest.cpp
[root@ubuntu0006:/media/hankin/vdb/unittest] #cat study_gtest.cpp
#include <iostream>
#include <gtest/gtest.h>
int sum(int a, int b) {
        return a + b;
TEST(sum, testSum) {
        EXPECT_EQ(5, sum(2, 3));        // 求和2+3=5
        EXPECT_NE(3, sum(3, 4));        // 求和3+4!=3
        EXPECT_EQ(2, sum(1, 2));        // 求和1+2=2
 * 如果在此处不写main函数，那么在链接库的时候还需要链接-lgtest_main, 否则只需链接-lgtest即可。
 * 否则报错：
 * /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crt1.o：在函数‘_start’中：
 * (.text+0x20)：对‘main’未定义的引用
 * collect2: error: ld returned 1 exit status
#if 0
int main(int argc, char **argv)
        testing::InitGoogleTest(&argc, argv);
        return RUN_ALL_TESTS();
#endif

项目测试：

[root@ubuntu0006:/media/hankin/vdb/unittest/project] #g++ gtest_modle.cpp modle.cpp -std=c++11 -lgtest_main -lgtest -lpthread
[root@ubuntu0006:/media/hankin/vdb/unittest/project] #./a.out
Running main() from /media/hankin/vdb/unittest/googletest-release-1.11.0/googletest/src/gtest_main.cc
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from add
[ RUN      ] add.add1
gtest_modle.cpp:7: Failure
Expected equality of these values:
  add(1, 2, 0)
    Which is: 3
[  FAILED  ] add.add1 (0 ms)
[----------] 1 test from add (0 ms total)
[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (0 ms total)
[  PASSED  ] 0 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] add.add1
 1 FAILED TEST
[root@ubuntu0006:/media/hankin/vdb/unittest/project] #vim gtest_modle.cpp
[root@ubuntu0006:/media/hankin/vdb/unittest/project] #g++ gtest_modle.cpp modle.cpp -std=c++11 -lgtest_main -lgtest -lpthread
./[root@ubuntu0006:/media/hankin/vdb/unittest/project] #./a.out
Running main() from /media/hankin/vdb/unittest/googletest-release-1.11.0/googletest/src/gtest_main.cc
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from add
[ RUN      ] add.add1
[       OK ] add.add1 (0 ms)
[----------] 1 test from add (0 ms total)
[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (0 ms total)
[  PASSED  ] 1 test.

详细见github/stroage/c++/unittest/。

Windows

#pragma once
#include "gtest/gtest.h"
#pragma comment(lib, "library/gtestlib/gtest.lib")
int add(int x, int y)
    return x + y;
TEST(add, add)
    EXPECT_EQ(5, add(2, 3));
    EXPECT_NE(3, add(3, 4));
    //EXPECT_EQ(2, add(1, 2, 0));
* 1.属性->C/C++->附加目录 增加gtest的include文件夹，这样才不能破坏库的其他文件调用
* 2.属性->C/C++->代码生成->运行库->多线程 DLL (/MD) 修改为 多线程 (/MT)
int test_study_gtest(int argc, char** argv)
    testing::InitGoogleTest(&argc, argv);
    RUN_ALL_TESTS();
    return 0;

INSTANTIATE_TEST_SUITE_P(PARAM,MyClassTest,testing::Values(3,5,7,9));