Add a wrapper module for add_test

CMakeLists.txt

@@ -51,13 +51,27 @@ if(FEATURE_TESTS)
     ENABLE_SANITIZER_THREAD
     ENABLE_SANITIZER_MEMORY)
 
-  # generate a main function for the test executable
-  enable_testing()
-  add_library(catch2_test_common INTERFACE)
-  target_find_dependencies(catch2_test_common INTERFACE_CONFIG Catch2)
-  target_link_libraries(catch2_test_common INTERFACE Catch2::Catch2)
-  target_compile_definitions(catch2_test_common INTERFACE CATCH_CONFIG_MAIN DO_NOT_USE_WMAIN)
-  include(Catch)
+  include(CTest)
+  # common settings for library test
+  if(${ENABLE_COVERAGE})
+    set(COVERAGE_ARGS --reporter xml)
+  endif()
+  add_test_config(common
+    DEPENDENCIES_CONFIG
+    Catch2
+
+    LIBRARIES
+    my_project_options
+    my_project_warnings
+    Catch2::Catch2
+
+    COMPILE_DEFINITIONS
+    CATCH_CONFIG_MAIN
+    DO_NOT_USE_WMAIN
+
+    EXECUTE_ARGS
+    ${COVERAGE_ARGS}
+  )
 endif()
 
 if(FEATURE_DOCS)

my_exe/test/CMakeLists.txt

@@ -1,28 +1,2 @@
-# test dependencies
-include(CTest)
-
-# ----------------------------------------------------------------------------------------------------------------------
-# test the executable part
-add_test(
-  # calling my_exe executable directly
-  NAME my_exe_test
-  COMMAND my_exe ""
-  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
-
-# ----------------------------------------------------------------------------------------------------------------------
-# test the library part
-add_executable(my_exe_lib_tests "./tests.cpp")
-target_link_libraries(
-  my_exe_lib_tests
-  PRIVATE my_project_warnings
-          my_project_options
-          catch2_test_common
-          my_exe_lib)
-
-# use xml reporter if coverage is enabled
-if(${ENABLE_COVERAGE})
-  set(COVERAGE_ARGS REPORTER xml)
-endif()
-
-# automatically discover tests that are defined in catch based test files you can modify the tests
-catch_discover_tests(my_exe_lib_tests ${COVERAGE_ARGS})
+add_library_test(my_exe_lib tests CONFIGS common SOURCES tests.cpp)
+add_executable_test(my_exe no_arg)

my_header_lib/test/CMakeLists.txt

@@ -1,23 +1 @@
-# test dependencies
-include(CTest)
-
-# test executable
-add_executable(my_header_lib_tests "./tests.cpp")
-
-target_link_libraries(
-  my_header_lib_tests
-  PRIVATE my_header_lib
-          my_project_warnings
-          my_project_options
-          catch2_test_common)
-
-# use xml reporter if coverage is enabled
-if(${ENABLE_COVERAGE})
-  set(COVERAGE_ARGS REPORTER xml)
-endif()
-
-# automatically discover tests that are defined in catch based test files you can modify the tests
-catch_discover_tests(my_header_lib_tests ${COVERAGE_ARGS})
-
-# constexpr tests
-add_subdirectory("./constexpr")
+add_library_test(my_header_lib tests CONFIGS common SOURCES tests.cpp)

my_lib/test/CMakeLists.txt

@@ -1,23 +1,4 @@
-# test dependencies
-include(CTest)
-
-# test executable
-add_executable(my_lib_tests "./tests.cpp")
-
-target_link_libraries(
-  my_lib_tests
-  PRIVATE my_lib
-          my_project_warnings
-          my_project_options
-          catch2_test_common)
-
-# use xml reporter if coverage is enabled
-if(${ENABLE_COVERAGE})
-  set(COVERAGE_ARGS REPORTER xml)
-endif()
-
-# automatically discover tests that are defined in catch based test files you can modify the tests
-catch_discover_tests(my_lib_tests ${COVERAGE_ARGS})
+add_library_test(my_lib tests CONFIGS common SOURCES tests.cpp)
 
 # constexpr tests
 add_subdirectory("./constexpr")

my_lib/test/constexpr/CMakeLists.txt

@@ -1,25 +1,24 @@
 # Add a file containing a set of constexpr tests
-add_executable(my_lib_constexpr_tests "./constexpr_tests.cpp")
-
-target_link_libraries(
-  my_lib_constexpr_tests
-  PRIVATE my_lib
-          my_project_warnings
-          my_project_options
-          catch2_test_common)
-
-catch_discover_tests(my_lib_constexpr_tests ${COVERAGE_ARGS})
+add_library_test(my_lib constexpr_tests CONFIGS common SOURCES constexpr_tests.cpp)
 
 # Disable the constexpr portion of the test, and build again this allows us to have an executable that we can debug when
 # things go wrong with the constexpr testing
-add_executable(my_lib_relaxed_constexpr_tests "./constexpr_tests.cpp")
+add_library_test(my_lib relaxed_constexpr_tests
+  CONFIGS
+  common
+
+  SOURCES
+  constexpr_tests.cpp
 
-target_link_libraries(
-  my_lib_relaxed_constexpr_tests
-  PRIVATE my_lib
-          my_project_warnings
-          my_project_options
-          catch2_test_common)
-target_compile_definitions(my_lib_relaxed_constexpr_tests PRIVATE -DCATCH_CONFIG_RUNTIME_STATIC_REQUIRE)
+  COMPILE_DEFINITIONS
+  -DCATCH_CONFIG_RUNTIME_STATIC_REQUIRE
+)
 
-catch_discover_tests(my_lib_relaxed_constexpr_tests ${COVERAGE_ARGS})
+# Or for reuse:
+#
+# add_test_config(relaxed_constexpr
+#   COMPILE_DEFINITIONS
+#   -DCATCH_CONFIG_RUNTIME_STATIC_REQUIRE
+# )
+#
+# add_library_test(my_lib relaxed_constexpr_tests CONFIGS common relaxed_constexpr SOURCES constexpr_tests.cpp)