如何在Google Test中为一个灯具运行多个测试用例？

Question

Suppose that I have a Google Test fixture named ProfileTest inherited from ::testing::TestWithParams<T> that creates a parser:

class ProfileTest:

public ::testing::TestWithParam<std::tuple<std::string,std::string>>{

public:
    QString getName(){
        return QFileInfo(*m_file).fileName();
    }

protected:
    void SetUp(){

        m_profile = new Profile();

        m_file = new QFile(std::get<0>(GetParam()).c_str());
        m_file->open(QIODevice::WriteOnly | QIODevice::Text);
        m_file->write(std::get<1>(GetParam()).c_str());
        m_file->close();

    }
    void TearDown(){

        delete m_file;

        delete m_profile;
    }

    Profile* m_profile;
    QFile *m_file;
};

Parametrized test case:

TEST_P(ProfileTest, TestProfileGoodFormedContent){
    ASSERT_NO_THROW(m_profile->readProfile(QFileInfo(*m_file)));
    ASSERT_STREQ(m_profile->name(), getName());
    ASSERT_GE(m_profile->getProfileConfigurations().size(),1);
}

I have added TEST_CASE with well-formed content, and anything works great.

Now I want to add TEST_CASE with bad-formed content, but TestProfileGoodFormedContent TEST_P is unsuitable for testing bad content.

I suppose I should add a new TEST_P , but it will have same fixture(ProfileTest) that brings me an error that all test cases will be provided to any TEST_P that have ProfileTest as fixture.

What should I do to test well-formed content and bad-formed content simultaneously?

Answer 1

In your case, you need as many Google Test fixtures as you have different scenarios.

Of course, you can have base fixture class - that will sets up for you common things:

class ProfileTestBase :

public ::testing::TestWithParam<std::tuple<std::string,std::string>>{

public:
    QString getName(){
        return QFileInfo(*m_file).fileName();
    }

protected:
    void SetUp(){

        m_profile = new Profile();

        m_file = new QFile(std::get<0>(GetParam()).c_str());
        m_file->open(QIODevice::WriteOnly | QIODevice::Text);
        m_file->write(std::get<1>(GetParam()).c_str());
        m_file->close();

    }
    void TearDown(){

        delete m_file;

        delete m_profile;
    }

    Profile* m_profile;
    QFile *m_file;
};

So - basically your current class will become base class.

For Good/Bad/Whatever-else - create specific fixture classes:

class GoodProfileTest : public ProfileTestBase {};
class BadProfileTest : public ProfileTestBase {};

You current "good" profile test would belongs to GoodProfileTest:

TEST_P(GoodProfileTest, TestProfileGoodFormedContent){
    ASSERT_NO_THROW(m_profile->readProfile(QFileInfo(*m_file)));
    ASSERT_STREQ(m_profile->name(), getName());
    ASSERT_GE(m_profile->getProfileConfigurations().size(),1);
}

Whatever you need to be tested as bad profile - use BadProfileTest class. And so on... Of course - you need to use INSTANTIATE_*** macros for every fixtures.