tests: clang-format only

No code changes, just full clang-format.

Change-Id: I096d1b5509897bd642545e3369ccd83ca2849441
diff --git a/tests/test_environment.h b/tests/test_environment.h
index a784644..83afcc2 100644
--- a/tests/test_environment.h
+++ b/tests/test_environment.h
@@ -51,5 +51,5 @@
 
     std::vector<Device *> devs_;
 };
-}
+}  // namespace vk_testing
 #endif  // TEST_ENVIRONMENT_H