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, 34 insertions, 0 deletions

diff --git a/Tests/GeneratorExpression/pwd.c b/Tests/GeneratorExpression/pwd.c
new file mode 100644
index 0000000..054b1af
--- /dev/null
+++ b/Tests/GeneratorExpression/pwd.c
@@ -0,0 +1,34 @@
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef _WIN32
+#include <direct.h>
+#define getcurdir _getcwd
+#else
+#include <unistd.h>
+#define getcurdir getcwd
+#endif
+
+int main(int argc, char* argv[])
+{
+#define BUFSZ 20000
+  char buf[BUFSZ + 1];
+#ifdef _WIN32
+  char *pos;
+#endif
+  getcurdir(buf, BUFSZ);
+#ifdef _WIN32
+  pos = buf;
+  while (*pos)
+    {
+    if (*pos == '\\')
+      {
+      *pos = '/';
+      }
+    ++pos;
+    }
+#endif
+  printf("%s\n", buf);
+  return EXIT_SUCCESS;
+}