[PATCH wayland] tests: Use unique XDG_RUNTIME_DIR

[Daniel Stone]

Rather than using a hardcoded 'wayland-tests' directory under
the existing XDG_RUNTIME_DIR to use as the new runtime dir, use mkdtemp
to guarantee uniqueness. This fixes make -jN check, as well as just
happening to run 'make check' twice from the same session.

Signed-off-by: Daniel Stone <daniels at collabora.com>
Reported-by: Pekka Paalanen <pekka.paalanen at collabora.com>
---
 tests/test-runner.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/test-runner.c b/tests/test-runner.c
index 4aa6667..82a0a7b 100644
--- a/tests/test-runner.c
+++ b/tests/test-runner.c
@@ -226,10 +226,11 @@ set_xdg_runtime_dir(void)
 
 	xrd_env = getenv("XDG_RUNTIME_DIR");
 	/* if XDG_RUNTIME_DIR is not set in environ, fallback to /tmp */
-	assert((snprintf(xdg_runtime_dir, PATH_MAX, "%s/wayland-tests",
+	assert((snprintf(xdg_runtime_dir, PATH_MAX, "%s/wayland-tests-XXXXXX",
 			 xrd_env ? xrd_env : "/tmp") < PATH_MAX)
 		&& "test error: XDG_RUNTIME_DIR too long");
 
+	assert(mkdtemp(xdg_runtime_dir) && "test error: mkdtemp failed");
 	if (mkdir(xdg_runtime_dir, 0700) == -1)
 		if (errno != EEXIST) {
 			perror("Creating XDG_RUNTIME_DIR");
-- 
2.9.3