CPPUNIT：我們真的需要每個測試一個功能嗎？

Question

考慮這個意思做同樣的測試（doTest），但使用不同的參數CppUnit的測試類：

class MyTest : public CPPUNIT_NS::TestFixture 
{ 
    CPPUNIT_TEST_SUITE(MyTest); 
    CPPUNIT_TEST(test1); 
    CPPUNIT_TEST(test2); 
    CPPUNIT_TEST(test3); 
    CPPUNIT_TEST_SUITE_END(); 

public: 
    MyTest(); 

    void test1() { doTest(1); } 
    void test2() { doTest(2); } 
    void test3() { doTest(3); } 

    void doTest(int param); 
}; 
CPPUNIT_TEST_SUITE_REGISTRATION(MyTest); 

有沒有辦法改變這種狀況，以避免申報test1，test2和test3，喜歡的東西：

class MyTest : public CPPUNIT_NS::TestFixture 
{ 
    CPPUNIT_TEST_SUITE(MyTest); 
    CPPUNIT_TEST_PARAM(doTest, 1); // CPPUNIT_TEST_PARAM does not exits, it's just to illustrate my need 
    CPPUNIT_TEST_PARAM(doTest, 2); // CPPUNIT_TEST_PARAM does not exits, it's just to illustrate my need 
    CPPUNIT_TEST_PARAM(doTest, 3); // CPPUNIT_TEST_PARAM does not exits, it's just to illustrate my need 
    CPPUNIT_TEST_SUITE_END(); 

public: 
    MyTest(); 

    void doTest(int param); 
}; 
CPPUNIT_TEST_SUITE_REGISTRATION(MyTest); 

注意CPPUNIT_TEST是一個宏：

#define CPPUNIT_TEST(testMethod)      \ 
    CPPUNIT_TEST_SUITE_ADD_TEST(       \ 
     (new CPPUNIT_NS::TestCaller<TestFixtureType>( \ 
        context.getTestNameFor(#testMethod), \ 
        &TestFixtureType::testMethod,   \ 
        context.makeFixture()))) 

編輯：

試過這樣：

CPPUNIT_TEST_SUITE(MyTest); 
CPPUNIT_TEST(funcT<1>); 
CPPUNIT_TEST_SUITE_END(); 

template<int i> void funcT() { doTest(i); } 

它工作正常，但未能如果我使用char*類型：

CPPUNIT_TEST_SUITE(MyTest); 
CPPUNIT_TEST(funcT<"foo">); 
CPPUNIT_TEST_SUITE_END(); 

template<char* s> void funcT() { std::cout << s << std::endl; doTest(1); } 

它的錯誤：

error C2664: 'CppUnit::TestCaller<test_cppunit_regulation_regul_dt_100::TestFixtureType>::TestCaller(const CppUnit::TestCaller<test_cppunit_regulation_regul_dt_100::TestFixtureType> &)': cannot convert argument 2 from 'void (__cdecl *)(void)' to 'void (__cdecl test_cppunit_regulation_regul_dt_100::*)(void)' 

或者更參數：

個

CPPUNIT_TEST_SUITE(MyTest); 
CPPUNIT_TEST(funcT<1,2>); 
CPPUNIT_TEST_SUITE_END(); 

template<int i, int j> void funcT() { doTest(i+j); } 

它錯誤：

1>b:\dev\vobs_diabeloop\private\tst\regulation\cppunit\regul_dt_100\test.cpp(14): warning C4002: too many actual parameters for macro 'CPPUNIT_TEST' 
1>b:\dev\vobs_diabeloop\private\tst\regulation\cppunit\regul_dt_100\test.cpp(14): error C2059: syntax error: ')' 

最後嘗試添加括號（CPPUNIT_TEST((funcT<1,2>));），它錯誤：創建多個測試類（而不是一個單一的與

1>b:\dev\vobs_diabeloop\private\tst\regulation\cppunit\regul_dt_100\test.cpp(14): error C2589: '(': illegal token on right side of '::' 
1>b:\dev\vobs_diabeloop\private\tst\regulation\cppunit\regul_dt_100\test.cpp(14): error C2059: syntax error: '::' 
1>b:\dev\vobs_diabeloop\private\tst\regulation\cppunit\regul_dt_100\test.cpp(14): error C2660: 'CppUnit::TestSuiteBuilderContextBase::addTest': function does not take 2 arguments 
1>b:\dev\vobs_diabeloop\private\tst\regulation\cppunit\regul_dt_100\test.cpp(14): error C2143: syntax error: missing ';' before ')' 
1>b:\dev\vobs_diabeloop\private\tst\regulation\cppunit\regul_dt_100\test.cpp(14): error C2059: syntax error: ')' 

Answer 1

找到一個解決方案几個子測試）。

那裏只有一個int參數的簡單情況：

class BaseTest : public CPPUNIT_NS::TestFixture 
{ 
public: 
    BaseTest() {} 

    void doTest(int param) {} 
}; 

template < int i > 
class MyTest : public BaseTest 
{ 
    CPPUNIT_TEST_SUITE(MyTest<i>); 
    CPPUNIT_TEST(doTest); 
    CPPUNIT_TEST_SUITE_END(); 

    void doTest() 
    { 
     BaseTest::doTest(i); 
    }; 
}; 

#define REGISTER_TEST_WITH_PARAMS(name, a) \ 
     CPPUNIT_TEST_SUITE_REGISTRATION(MyTest<a>); 

REGISTER_TEST_WITH_PARAMS(test1, 1); 
REGISTER_TEST_WITH_PARAMS(test2, 2); 

如果需要更多的參數，只需要創建一個類來封裝他們：

class BaseTest : public CPPUNIT_NS::TestFixture 
{ 
public: 
    BaseTest() {} 

    void doTest(int param1, const std::string& param2) {} 
}; 

class ParamClass 
{ 
public: 
    ParamClass(int param1, const std::string& param2) : 
     param1(param1), 
     param2(param2) 
    { 

    } 

    int param1; 
    std::string param2; 
}; 

template < ParamClass & T > 
class CURRENT_MODULE : public BaseTest 
{ 
    CPPUNIT_TEST_SUITE(MyTest<T>); 
    CPPUNIT_TEST(doTest); 
    CPPUNIT_TEST_SUITE_END(); 

    void doTest() 
    { 
     BaseTest::doTest(T.param1, T.param2); 
    }; 
}; 

#define REGISTER_TEST_WITH_PARAMS(name, a, b) \ 
     ParamClass name(a, b); \ 
     CPPUNIT_TEST_SUITE_REGISTRATION(MyTest<name>); 

REGISTER_TEST_WITH_PARAMS(test1, 1, "test1"); 
REGISTER_TEST_WITH_PARAMS(test2, 2, "test2");