Each test now has a name and a label. In CMake, all tests are numbered, so they also carry a unique number. Having defined the test label, we can now either run the entire set or run tests by their names (using regular expressions), their labels, or their numbers.

Running tests by their names (here, we run all tests with names matching feature) looks as follows:

$ ctest -R feature

    Start 1: feature-a
1/4 Test #1: feature-a ........................ Passed 0.11 sec
    Start 2: feature-b
2/4 Test #2: feature-b ........................ Passed 0.11 sec
    Start 3: feature-c
3/4 Test #3: feature-c ........................ Passed 0.11 sec
    Start 4: feature-d
4/4 Test #4: feature-d ........................ Passed 0.51 sec

100% tests passed, 0 tests failed out of 4

Running tests by their labels (here, we run all long tests) produces:

$ ctest -L long

    Start 4: feature-d
1/3 Test #4: feature-d ........................ Passed 0.51 sec
    Start 5: benchmark-a
2/3 Test #5: benchmark-a ...................... Passed 0.51 sec
    Start 6: benchmark-b
3/3 Test #6: benchmark-b ...................... Passed 0.51 sec

100% tests passed, 0 tests failed out of 3

Running tests by their numbers (here, we run tests 2 to 4) yields:

$ ctest -I 2,4

    Start 2: feature-b
1/3 Test #2: feature-b ........................ Passed 0.11 sec
    Start 3: feature-c
2/3 Test #3: feature-c ........................ Passed 0.11 sec
    Start 4: feature-d
3/3 Test #4: feature-d ........................ Passed 0.51 sec

100% tests passed, 0 tests failed out of 3