Factor out CMake.File test result check for re-use

The CMake.File test runs several scripts through "cmake -P" and checks
the output and result against known good values.  This commit factors
out the checking code into a separate CMakeCheckTest module.  The module
may be used by new tests.

1 files changed, 30 insertions, 0 deletions

diff --git a/Tests/CMakeTests/CheckCMakeTest.cmake b/Tests/CMakeTests/CheckCMakeTest.cmake
new file mode 100644
index 0000000..2e4fedd
--- /dev/null
+++ b/Tests/CMakeTests/CheckCMakeTest.cmake
@@ -0,0 +1,30 @@
+get_filename_component(CMakeTests_SRC_DIR ${CMAKE_CURRENT_LIST_FILE} PATH)
+function(check_cmake_test prefix)
+  get_filename_component(CMakeTests_BIN_DIR ${CMAKE_CURRENT_LIST_FILE} PATH)
+  foreach(test ${ARGN})
+    message(STATUS "Test ${prefix}-${test}...")
+    execute_process(
+      COMMAND ${CMAKE_COMMAND} -P "${CMakeTests_SRC_DIR}/${prefix}-${test}.cmake"
+      WORKING_DIRECTORY "${CMakeTests_BIN_DIR}"
+      OUTPUT_VARIABLE stdout
+      ERROR_VARIABLE stderr
+      RESULT_VARIABLE result
+      )
+    string(REGEX REPLACE "\n" "\n out> " out " out> ${stdout}")
+    string(REGEX REPLACE "\n" "\n err> " err " err> ${stderr}")
+    if(NOT "${result}" STREQUAL ${${test}-RESULT})
+      message(FATAL_ERROR
+        "Test ${test} result is [${result}], not [${${test}-RESULT}].\n"
+        "Test ${test} output:\n"
+        "${out}\n"
+        "${err}")
+    endif()
+    if(${test}-STDERR AND NOT "${err}" MATCHES "${${test}-STDERR}")
+      message(FATAL_ERROR
+        "Test ${test} stderr does not match\n  ${${test}-STDERR}\n"
+        "Test ${test} output:\n"
+        "${out}\n"
+        "${err}")
+    endif()
+  endforeach()
+endfunction()