c++ - Google 使用全局 vector 测试 ValuesIn

Question

我正在尝试根据目录中的配置文件运行一堆谷歌测试。这样我就可以只添加一个新文件并运行测试，而不必将其添加到我的参数化测试并重新编译。这是我的代码:

typedef std::pair<QString, int> TestParam;

QString generatedLogic;

std::vector<TestParam> badExpressionTests;

class LogicBuilderTest : public ::testing::TestWithParam<TestParam> {};

GTEST_API_ int main(int argc, char **argv) {
    testing::InitGoogleTest(&argc, argv);

    ::generatedLogic = "/home/mitydsp/trunk/System/logicExecutionEngine/engine/include/GeneratedLogic.h";

    QString dir = "/home/mitydsp/trunk/System/logicExecutionEngine/unittest/expressions/bad/";
    QDirIterator it(dir, QStringList() << "*.txt", QDir::Files, QDirIterator::Subdirectories);

    while (it.hasNext()) {
        QString path = it.next();
        QStringList nameParts = it.fileName().split("_");
        int exitCode = nameParts[0].toInt();
        ::badExpressionTests.push_back(TestParam(path, exitCode));
    }

    std::cout << "Size of vector: " << badExpressionTests.size() << std::endl;

    return RUN_ALL_TESTS();
}

/**
 * Run parameterized test
 */
TEST_P(LogicBuilderTest, TestExitWithCode)
{    
    ::testing::FLAGS_gtest_death_test_style = "threadsafe";

    // Simulate fake main()
    char  arg0[] = "logicTest";
    char* argv[] = { &arg0[0], NULL };
    int argc = (int)(sizeof(argv) / sizeof(argv[0])) - 1;

    EXPECT_EXIT({
        // Need to run Qt Application because logic builder uses async QTimer::singleShot()
        QCoreApplication app(argc, argv);

        // Create a logic builder instance
        LogicBuilder logicBuilder(
            (int) ParameterStoreInterface::DEFAULT_PARAM_STORE_VALUES_KEY,
            (int) ParameterStoreInterface::DEFAULT_PARAM_STORE_NAMES_KEY,
            (int) ParameterStoreInterface::DEFAULT_PARAM_STORE_LOCK_KEY,
            QString(GetParam().first),
            QStringList(""),
            QStringList(generatedLogic),
            QString(LogicBuilder::DEFAULT_INTERMEDIATE_DIR),
            QString(LogicBuilder::DEFAULT_OUTPUT_SRC),
            QString(LogicBuilder::DEFAULT_OUTPUT_LIB),
            true );

        app.exec();
    }, ::testing::ExitedWithCode(GetParam().second), "");
} 

INSTANTIATE_TEST_CASE_P(TestBadExpressions, LogicBuilderTest,
                        ::testing::ValuesIn(::badExpressionTests));

当我运行它时，它显示正在运行 0 个测试，即使 vector 说它的大小是 2。为什么没有运行这些参数化测试？

Size of vector: 2
[==========] Running 0 tests from 0 test cases.
[==========] 0 tests from 0 test cases ran. (0 ms total)
[  PASSED  ] 0 tests.

最初我是通过手动定义配置文件来运行测试，但我不喜欢这样:

    INSTANTIATE_TEST_CASE_P(TestBadExpressions, LogicBuilderTest,
                        ::testing::Values(
                            TestParam("unittest/expressions/bad/17_no_lhs.txt", LogicBuilder::LB_VARIABLE_NO_LHS),
                            TestParam("unittest/expressions/bad/25_incomplete_rhs.txt", LogicBuilder::LB_PARSE_ERROR)
                        ));

Answer 1

我花了最后一个小时试图解决这个问题，然后我一发布就想出了解决方案。我会把它留在这里，因为它可能会在将来帮助某人:

与其尝试在 main 中创建文件列表，不如将 ValuesIn 传递给加载文件并返回 vector 的函数。

std::vector<TestParam> GetFilesInDir() 
{
    std::vector<TestParam> values;
    QString dir = "/home/mitydsp/trunk/System/logicExecutionEngine/unittest/expressions/bad/";
    QDirIterator it(dir, QStringList() << "*.txt", QDir::Files, QDirIterator::Subdirectories);

    while (it.hasNext()) {
        QString path = it.next();
        QStringList nameParts = it.fileName().split("_");
        int exitCode = nameParts[0].toInt();
        values.push_back(TestParam(path, exitCode));
    }

    return values;
}

INSTANTIATE_TEST_CASE_P(TestBadExpressions, LogicBuilderTest,
                        ::testing::ValuesIn(GetFilesInDir()));

感谢 Maksim Solovjov 提醒我 INSTANTIATE_TEST_CASE_P 宏在 main 之前执行。