Merge pull request #6 from MortenSchou/5-discover_tests-only-discover…

…s-single-target

discover_tests now accepts multiple targets

cmake/mtest.cmake

@@ -1,18 +1,20 @@
-# discover_tests(<target>) adds a post-build command to the given <target> that calls CMake in script mode to generate the CTest script.
+# discover_tests(<target>...) adds a post-build command to each <target> that calls CMake in script mode to generate the CTest script.
 
-function(discover_tests TARGET)
-    set(ctest_tests_file "${CMAKE_CURRENT_BINARY_DIR}/${TARGET}_tests.cmake")
-    add_custom_command(
-        TARGET ${TARGET} POST_BUILD
-        BYPRODUCTS "${ctest_tests_file}"
-        COMMAND "${CMAKE_COMMAND}"
-            -D "TEST_TARGET=${TARGET}"
-            -D "TEST_EXECUTABLE=$<TARGET_FILE:${TARGET}>"
-            -D "CTEST_FILE=${ctest_tests_file}"
-            -P "${_MTEST_DISCOVER_TEST_SCRIPT}"
-        VERBATIM
-    )
-    set_property(DIRECTORY APPEND PROPERTY TEST_INCLUDE_FILES "${ctest_tests_file}")
+function(discover_tests)
+    foreach (TARGET IN LISTS ARGN)
+        set(ctest_tests_file "${CMAKE_CURRENT_BINARY_DIR}/${TARGET}_tests.cmake")
+        add_custom_command(
+            TARGET ${TARGET} POST_BUILD
+            BYPRODUCTS "${ctest_tests_file}"
+            COMMAND "${CMAKE_COMMAND}"
+                -D "TEST_TARGET=${TARGET}"
+                -D "TEST_EXECUTABLE=$<TARGET_FILE:${TARGET}>"
+                -D "CTEST_FILE=${ctest_tests_file}"
+                -P "${_MTEST_DISCOVER_TEST_SCRIPT}"
+            VERBATIM
+        )
+        set_property(DIRECTORY APPEND PROPERTY TEST_INCLUDE_FILES "${ctest_tests_file}")
+    endforeach()
 endfunction()
 
 # Specify location of the mtest_add_tests.cmake script relative to current location (not relative to where discover_tests() is called).