How can I combine test filters in the unit testing framework Google Test?

Question

I have several unit test cases, which I have written with the Google Test framework:

1. Test class:

   class Test: public testing::Test
   {
   public:
     virtual void SetUp() {}
     virtual void TearDown() {}
   };
   

2. Actual tests:

   TEST_F(Test, SubTest1)
   {
     // execute Test logic
   }
   
   TEST_F(Test, SubTest2)
   {
     // execute Test logic
   }
   
   TEST_F(Test, SubTest3)
   {
     // execute Test logic
   }
   

Assumed that I want to display only SubTest1 and SubTest3, what do I have to do? Important is, that I want to see at a central place (main method), which tests are actually executed.

I thought, that I can "stack" filters as in the following example, but this approach did not work:

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

  ::testing::GTEST_FLAG(filter) = "Test.SubTest1";
  ::testing::GTEST_FLAG(filter) = "Test.SubTest3";
  return RUN_ALL_TESTS();
}

→ The second filter removed the first one and only SubTest3 is executed.

Answer 1

I tried to find some official googletest reference, but I only found this article explaining the syntax of googletest filters. If you want to run testcases matching one of 2 different patterns, your filter should look like:

"FIRST_PATTERN:SECOND_PATTERN"

So, in your case:

  ::testing::GTEST_FLAG(filter) = "Test.SubTest1:Test.SubTest3";

You can also use wilcards ? and * and you can add exclusion patterns after - sign.