Pass argument from ctest to gtest

Question

I am using gtest to write unit tests for my application. I also have ctest that runs all executables added by add_test CMake command. Is it possible to pass gtest variables through ctest when test execution starts?

I would like to for example sometimes filter out tests with --gtest_filter flag but I don't know how or if this is even possible through ctest? I have tried the following ways:

ctest --gtest_filter=AppTest.*
ctest --test-arguments="--gtest_filter=AppTest.*"

But both still run all tests instead the filtered ones.

Thanks!

Those who also has this problem should perhaps upwote this Kitware request: https://gitlab.kitware.com/cmake/cmake/-/issues/20470 — Lars, Jun 07 '21 at 07:02

score 5 · Answer 1 · answered Jul 16 '19 at 13:22

5

For anyone looking here in 2019, recent versions of CMake have gtest_discover_tests (GoogleTest module) which will hoist your tests into CTest and you can filter from there.

IOW rather than having a single add_test in CTest, it will use --gtest_list_tests to call add_test for each of your tests.

answered Jul 16 '19 at 13:22

Daniel Wyatt

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Could you add an example of how to filter with `ctest`? `ctest -L FixtureName.*` did not work for me. – pooya13 Jul 04 '21 at 08:21
NVM seems like I should have used `-R` instead of `-L`. – pooya13 Jul 04 '21 at 08:27

score 2 · Answer 2 · answered Jan 29 '18 at 04:35

2

For example, to make tests' output verbose:

$ make test ARGS="-V"

To run a particular test:

$ ctest -R <regex>

NB: You can have a look at this for some examples.

answered Jan 29 '18 at 04:35

Misha Tavkhelidze

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This actually answers the question. – David Bien Mar 25 '21 at 19:24

score 1 · Answer 3 · edited Oct 08 '18 at 17:35

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Take a look at CMakes's add_test add_test.

To filter out tests from CTest you can use -L ctest

edited Oct 08 '18 at 17:35

Croer01

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answered Oct 31 '17 at 12:51

Th. Thielemann

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I know the params can be added to the add_test command but what I would like to achieve is to filter tests when running ctest - not by changing cmake files to achieve that. – drodil Oct 31 '17 at 12:52
And why is it not working to use `ctest -L ` – Th. Thielemann Mar 31 '23 at 13:08

Pass argument from ctest to gtest

3 Answers3