cmSourceFile: Move LANGUAGE to GetPropertyForUser

- Remove the special case from cmGetSourceFilePropertyCommand

Tests: check LANGUAGE for source file
- use target_sources to add file
- use get_property to read property value

1 files changed, 10 insertions, 7 deletions

diff --git a/Tests/SourceFileProperty/CMakeLists.txt b/Tests/SourceFileProperty/CMakeLists.txt
index 1b6506d..5dbc34f 100644
--- a/Tests/SourceFileProperty/CMakeLists.txt
+++ b/Tests/SourceFileProperty/CMakeLists.txt
@@ -1,19 +1,22 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.1)
 project(SourceFileProperty C)
 
-set(sources)
-
 if (EXISTS icasetest.c)
   # If a file exists by this name, use it.
   set_source_files_properties(icasetest.c
     PROPERTIES
-      COMPILE_FLAGS -DNEEDED_TO_WORK)
+      COMPILE_DEFINITIONS NEEDED_TO_WORK)
 else ()
   # Work on case-sensitive file systems as well.
   set_source_files_properties(main.c
     PROPERTIES
-      COMPILE_FLAGS -DNO_NEED_TO_CALL)
+      COMPILE_DEFINITIONS NO_NEED_TO_CALL)
 endif ()
-list(APPEND sources ICaseTest.c)
 
-add_executable(SourceFileProperty main.c ${sources})
+add_executable(SourceFileProperty main.c)
+target_sources(SourceFileProperty PRIVATE ICaseTest.c)
+
+get_property(LANG SOURCE ICaseTest.c PROPERTY LANGUAGE)
+if (NOT "${LANG}" STREQUAL "C")
+  message(FATAL_ERROR "Bad language for file ICaseTest.c")
+endif ()