Frequently Asked Questions (FAQs)

1. Why does ct_assert_prints fail to find a string that is present?

   • Are you sure it’s present in the output EXACTLY as your search string? For better or for worse, CMake’s message command does some formatting on strings before printing them (e.g, inserts two spaces after a period). Furthermore, it can be a real pain to match printed strings with line breaks in them. It is highly recommended that you search for a key phrase rather than the entire print-out.

2. Why do my tests not run when I execute ctest?

   • Ensure that you’ve built your tests with CMake and your CMakeLists.txt is calling ct_add_dir() with the correct directory. When you build your tests you should see a message “Building tests”.