C++单元测试测试，使用模板测试类 [英] C++ unit test testing, using template test class

问题描述

我正在做一些 C++ 测试驱动开发.我有一组类做同样的事情，例如

I’m doing some C++ test driven development. I have a set of classes the do the same thing e.g.

相同的输入给出相同的输出(或者应该，这就是我试图测试的).我使用的是 Visual Studio 2012 的

same input gives same output (or should, that’s what I’m try to test). I’m using Visual Studio 2012’s

CppUnitTestFramework.我想创建一个模板化的测试类，所以我编写了一次测试，并且可以根据需要在类中模板化，但是我找不到这样做的方法.我的目标:

CppUnitTestFramework. I wanted to create a templated test class, so I write the tests once, and can template in classes as needed however I cannot find a way to do this. My aim:

/* two classes that do the same thing */
class Class1
{
    int method()
    {
        return 1;
    }
};

class Class2
{
    int method()
    {
        return 1;
    }
};

/* one set of tests for all classes */
template< class T>
TEST_CLASS(BaseTestClass)
{
    TEST_METHOD(testMethod)
    {
        T obj;

        Assert::AreEqual( 1, obj.method());
    }
};

/* only have to write small amout to test new class */
class TestClass1 : BaseTestClass<Class1>
{
};

class TestClass2 : BaseTestClass<Class1>
{
};

有没有办法使用 CppUnitTestFramework 来做到这一点?

Is there a way I can do this using CppUnitTestFramework?

是否有其他单元测试框架可以让我这样做?

Is there another unit testing framework that would allow me to do this?

推荐答案

我不知道 CppUnitTestFramework 有没有办法做到这一点，我不熟悉，但你肯定可以在 googletest 中进行指定一个任意的类列表并具有框架为所有这些生成(模板方式)相同的测试.我觉得符合您的要求.

I do not know if there is a way to do this with CppUnitTestFramework, with which I am unfamiliar, but something you can certainly do in googletest is specify an arbitrary list of classes and have the framework generate (template-wise) the same test(s) for all of them. I think that would fit your bill.

您可以在此处下载 googletest 作为源.

You can download googletest as source here.

你想要的成语是:

typedef ::testing::Types</* List of types to test */> MyTypes;
...
TYPED_TEST_CASE(FooTest, MyTypes);
...
TYPED_TEST(FooTest, DoesBlah) {
    /*  Here TypeParam is instantiated for each of the types
        in MyTypes. If there are N types you get N tests.
    */
    // ...test code
}

TYPED_TEST(FooTest, DoesSomethingElse) {
    // ...test code
}

研究 primer 和示例.然后去高级指南对于类型化测试

Study the primer and the samples. Then go to the AdvancedGuide for Typed Tests

另请查看更多断言

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