cmTestGenerator: Evaluate generator expressions in test properties

This is useful for cases like:

  add_test(NAME mytest COMMAND mydriver $<TARGET_FILE:myexe>)
  set_tests_properties(mytest PROPERTIES
    REQUIRED_FILES "$<TARGET_FILE:myexe>"
    WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIGURATION>"
    )

In this example we require the actual test executable to exist to
run the test in addition to the test driver at argv[0].  Also the
$<CONFIGURATION> expression improves over \${CTEST_CONFIGURATION_TYPE}
because the latter is not normalized for case-sensitive filesystems.

1 files changed, 2 insertions, 1 deletions

diff --git a/Source/cmSetTestsPropertiesCommand.h b/Source/cmSetTestsPropertiesCommand.h
index 3a59218..f2f2611 100644
--- a/Source/cmSetTestsPropertiesCommand.h
+++ b/Source/cmSetTestsPropertiesCommand.h
@@ -51,7 +51,8 @@ public:
       "  set_tests_properties(test1 [test2...] PROPERTIES prop1 value1 prop2"
       " value2)\n"
       "Set a property for the tests. If the property is not found, CMake "
-      "will report an error. The properties include:\n"
+      "will report an error. Generator expressions will be expanded the same "
+      "as supported by the test's add_test call. The properties include:\n"
       "WILL_FAIL: If set to true, this will invert the pass/fail flag of the"
       " test.\n"
       "PASS_REGULAR_EXPRESSION: If set, the test output will be checked "