test: add dummy tests

tests/CMakeLists.txt

@@ -0,0 +1,14 @@
+FetchContent_Declare(
+  catch2
+  GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+  GIT_TAG v3.4.0)
+FetchContent_MakeAvailable(catch2)
+
+add_executable(dummy_tests dummy.cpp)
+
+target_compile_features(dummy_tests PRIVATE cxx_std_20)
+
+target_link_libraries(dummy_tests PRIVATE Catch2::Catch2WithMain)
+
+include(Catch)
+catch_discover_tests(dummy_tests)

tests/dummy.cpp

@@ -0,0 +1,4 @@
+#include <catch2/catch_test_macros.hpp>
+
+TEST_CASE("dummy", "dummy tests") { REQUIRE(1 + 1 == 2); }
+TEST_CASE("dummy fails", "dummy tests") { REQUIRE_FALSE(1 + 1 != 2); }