cmake: add SDLMIXER_TESTS option for tests

Author: madebr

.github/workflows/main.yml

@@ -116,6 +116,8 @@ jobs:
           -DSDLMIXER_VORBIS_VORBISFILE=ON \
           -DSDLMIXER_STRICT=ON \
           -DSDLMIXER_WERROR=ON \
+          -DSDLMIXER_TESTS=ON \
+          -DSDLMIXER_TESTS_INSTALL=ON \
           -DSDLMIXER_INSTALL_MAN=ON \
           -DCMAKE_INSTALL_PREFIX=prefix_cmake \
           ${NULL+}

CMakeLists.txt

@@ -120,6 +120,9 @@ if(SDLMIXER_STRICT)
   set(fatal_error "FATAL_ERROR")
 endif()
 
+option(SDLMIXER_TESTS "Build unit tests?" OFF)
+option(SDLMIXER_TESTS_INSTALL "Install unit tests?" OFF)
+
 option(SDLMIXER_SAMPLES "Build the SDL3_mixer sample program(s)" ${SDLMIXER_SAMPLES_DEFAULT})
 cmake_dependent_option(SDLMIXER_SAMPLES_INSTALL "Install the SDL3_mixer sample program(s)" OFF "SDLMIXER_SAMPLES;SDLMIXER_INSTALL" OFF)
 
@@ -1153,6 +1156,10 @@ if(SDLMIXER_SAMPLES)
     add_sdl_mixer_example_executable(playwave examples/playwave.c)
 endif()
 
+if(SDLMIXER_TESTS)
+  add_subdirectory(test)
+endif()
+
 set(available_deps)
 set(unavailable_deps)
 foreach(dep IN LISTS SDLMIXER_BACKENDS)

test/CMakeLists.txt

@@ -0,0 +1,37 @@
+# CMake script for building SDL_mixer tests
+
+set(CMAKE_POSITION_INDEPENDENT_CODE OFF)
+
+set(RESOURCE_FILES
+)
+
+function(add_sdl_mixer_test_executable TARGET)
+    add_executable(${TARGET} ${ARGN})
+    target_compile_definitions(${TARGET}
+        PRIVATE
+            $<TARGET_PROPERTY:${sdl3_mixer_target_name},COMPILE_DEFINITIONS>
+    )
+    sdl_add_warning_options(${TARGET} WARNING_AS_ERROR ${SDLMIXER_WERROR})
+    target_link_libraries(${TARGET} PRIVATE SDL3_mixer::SDL3_mixer SDL3::SDL3)
+
+    if(SDLMIXER_TESTS_INSTALL)
+        install(
+            TARGETS ${TARGET}
+            DESTINATION "${CMAKE_INSTALL_LIBEXECDIR}/installed-tests/${PROJECT_NAME}"
+        )
+        if(MSVC)
+            SDL_install_pdb("${TARGET}" "${CMAKE_INSTALL_LIBEXECDIR}/installed-tests/${PROJECT_NAME}")
+        endif()
+    endif()
+endfunction()
+
+add_sdl_mixer_test_executable(testaudiodecoder testaudiodecoder.c)
+add_sdl_mixer_test_executable(testmixer testmixer.c)
+add_sdl_mixer_test_executable(testspacialization testspatialization.c)
+
+if(SDLMIXER_TESTS_INSTALL)
+    install(
+        FILES ${RESOURCE_FILES}
+        DESTINATION "${CMAKE_INSTALL_LIBEXECDIR}/installed-tests/${PROJECT_NAME}"
+    )
+endif()