googletest：如果测试失败，则执行附加操作

Question

我希望能够在测试失败的情况下将数据保存到磁盘。有没有办法在googletest框架内做到这一点？

TEST_F(test_similarity,are_similar) { 

    ASSERT_GT(1e-10,norm(im0,im1)); 

    // If test fails save images to disk for comparison: 
    imwrite("im0.png",im0); 
    imwrite("im1.png",im1); 
} 

Answer 1

有所述Test::HasFailure()，Test::HasNonfatalFailure()和Test::HasFatalFailure()功能，即返回true如果有一个（致命/非致命）的故障。你可以用它们来检查。

TEST_F(test_similarity,are_similar) { 

    EXPECT_GT(1e-10,norm(im0,im1)); // Note the change to EXPECT 

    // If test fails save images to disk for comparison: 
    if(HasFailure()) { // if not in a TEST, use ::testing::Test::HasFailure() 
    imwrite("im0.png",im0); 
    imwrite("im1.png",im1); 
    FAIL(); //We want to fail fatally; use ADD_FAILURE() to fail non-fatally 
    } 
} 

见 https://github.com/google/googletest/blob/master/googletest/docs/AdvancedGuide.md#checking-for-failures-in-the-current-test了解详情。