Add tests only if they are built and can therefore be run

Author: TheAssassin

tests/CMakeLists.txt

@@ -1,5 +1,19 @@
 set(TEST_DATA_DIR ${CMAKE_CURRENT_SOURCE_DIR}/data)
 
+# common CMake macro for linuxdeploy, adding tests only if they are supposed to be built
+# otherwise if you try to run CTest the tests aren't build and CTest can't find them
+if(NOT COMMAND ld_add_test)
+    function(ld_add_test TARGET_NAME)
+        get_target_property(${TARGET_NAME}_EFA ${TARGET_NAME} EXCLUDE_FROM_ALL)
+        if(NOT ${${TARGET_NAME}_EXCLUDE_FROM_ALL})
+            message(STATUS "[${PROJECT_NAME}] Adding test ${TARGET_NAME}")
+            add_test(${TARGET_NAME} ${TARGET_NAME})
+        else()
+            message(STATUS "[${PROJECT_NAME}] Test ${TARGET_NAME} is excluded from ALL, not adding as test")
+        endif()
+    endfunction()
+endif()
+
 # build a single test binary
 add_executable(test_desktopfile
     test_desktopfile.cpp
@@ -16,4 +30,4 @@ set_property(TARGET test_desktopfile
     PROPERTY COMPILE_FLAGS "-DDESKTOP_FILE_PATH=\\\"${TEST_DATA_DIR}/simple_app.desktop\\\""
 )
 
-add_test(test_desktopfile test_desktopfile)
+ld_add_test(test_desktopfile test_desktopfile)