PART 1：

参考：http://hahack.com/codes/cmake/

Demo目录结构如下：

Test/
├── add.cpp
└── CMakeLists.txt

add.cpp

#include <iostream>
#include <stdlib.h>
int main(int argc, char *argv[])
{
    if (argc != 3) {
        std::cout << "parameter error" << std::endl;
        return -1; 
    }   

    int a, b;
    a = atoi(argv[1]);
    b = atoi(argv[2]);
    std::cout << a << " + " << b << " is " << a + b << std::endl;
    return 0;
}

CMakeLists.txt

CMAKE_MINIMUM_REQUIRED(VERSION 3.3)
ADD_EXECUTABLE(add add.cpp)
enable_testing()
ADD_TEST(NAME test_add_2_3 COMMAND add 2 3)
SET_TESTS_PROPERTIES(test_add_2_3
    PROPERTIES PASS_REGULAR_EXPRESSION "5")
ADD_TEST(NAME test_add_4_5 COMMAND add 4 5)
SET_TESTS_PROPERTIES(test_add_4_5
    PROPERTIES PASS_REGULAR_EXPRESSION "9")

在CMakeLists.txt里面，我们添加了两个测试用例。其中 PASS_REGULAR_EXPRESSION 用来测试输出是否包含后面的字符串。

在Test目录下建立build目录，cd build && cmake .., make, make test, 结果如下：

huyanjie@debian:~/test/Test/build$ make test
Running tests...
Test project /home/huyanjie/test/Test/build
    Start 1: test_add_2_3
1/2 Test #1: test_add_2_3 .....................   Passed    0.00 sec
    Start 2: test_add_4_5
2/2 Test #2: test_add_4_5 .....................   Passed    0.00 sec

100% tests passed, 0 tests failed out of 2

Total Test time (real) =   0.01 sec

可以看到两个用例都正确执行了。

像上面的方式写测试用例还是比较繁琐，还可以定义宏来简化：

CMAKE_MINIMUM_REQUIRED(VERSION 3.3)
ADD_EXECUTABLE(add add.cpp)
enable_testing()

macro(do_test ARG1 ARG2 RESULT)
    ADD_TEST(NAME test_add_${ARG1}_${ARG2} COMMAND add ${ARG1} ${ARG2})
    SET_TESTS_PROPERTIES(test_add_${ARG1}_${ARG2}
        PROPERTIES PASS_REGULAR_EXPRESSION ${RESULT})
endmacro(do_test)
do_test(2 3 5)
do_test(4 5 9)

PART 2:

CPPUNIT使用如下：

参考http://blog.csdn.net/freefalcon/article/details/753819

#include <cppunit/TestResult.h>
#include <cppunit/TestResultCollector.h>
#include <cppunit/TextOutputter.h>
#include <cppunit/TestRunner.h>
#include <cppunit/extensions/HelperMacros.h>

class StringTest : public CppUnit::TestFixture
{
    CPPUNIT_TEST_SUITE(StringTest);
    CPPUNIT_TEST(testSwap);
    CPPUNIT_TEST(testFind);
    CPPUNIT_TEST_SUITE_END();
public:
    void setUp()
    {   
        m_str1 = "Hello, world";
        m_str2 = "Hi, cppunit";
    }   
    void tearDown()
    {   

    }   
    void testSwap()
    {   
        std::string str1 = m_str1;
        std::string str2 = m_str2;
        m_str1.swap(m_str2);
        CPPUNIT_ASSERT(m_str1 == str2);
        CPPUNIT_ASSERT(m_str2 == str2);
    }   
    void testFind()
    {   
        int pos1 = m_str1.find(',');
        int pos2 = m_str2.rfind(',');
        CPPUNIT_ASSERT_EQUAL(5, pos1);
        CPPUNIT_ASSERT_EQUAL(2, pos2);
    }   
protected:
    std::string m_str1;
    std::string m_str2;
};

CPPUNIT_TEST_SUITE_REGISTRATION(StringTest);
int main(int argc, char *argv[])
{
    CppUnit::TestResult r;
    CppUnit::TestResultCollector rc;
    r.addListener(&rc);

    CppUnit::TestRunner runner;
    runner.addTest(CppUnit::TestFactoryRegistry::getRegistry().makeTest());
    runner.run(r);

    CppUnit::TextOutputter o(&rc, std::cout);
    o.write();

    return rc.wasSuccessful()?0:-1;
}

PART 3

CMake 结合CPPUnit