test: assert if there's nothing to test (#29)

* test: add assertion if there's nothing to test * test: fix regex for passing `TEST_MATCHES` option
threeal · Jan 16, 2024 · e55fe14 · e55fe14
1 parent 13ce8b1
commit e55fe14
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
@@ -4,7 +4,7 @@ function(add_cmake_test FILE)
       NAME ${NAME}
       COMMAND ${CMAKE_COMMAND}
         -D CMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}
-        -D TEST_MATCHES="^${NAME}$"
+        -D TEST_MATCHES=^${NAME}$
         -P ${CMAKE_CURRENT_SOURCE_DIR}/${FILE}
     )
   endforeach()

diff --git a/test/MkdirRecursiveTest.cmake b/test/MkdirRecursiveTest.cmake
@@ -3,7 +3,11 @@ if(NOT TEST_MATCHES)
   set(TEST_MATCHES ".*")
 endif()
 
+set(TEST_COUNT 0)
+
 if("Create directory recursively" MATCHES ${TEST_MATCHES})
+  math(EXPR TEST_COUNT "${TEST_COUNT} + 1")
+
   if(EXISTS parent)
     message(STATUS "Removing test directory")
     file(REMOVE_RECURSE parent)
@@ -24,5 +28,11 @@ endif()
 
 # Add more test cases here.
 if("Test name" MATCHES ${TEST_MATCHES})
+  math(EXPR TEST_COUNT "${TEST_COUNT} + 1")
+
   # Do something.
 endif()
+
+if(TEST_COUNT LESS_EQUAL 0)
+  message(FATAL_ERROR "Nothing to test with: ${TEST_MATCHES}")
+endif()