298   IntrusiveRefCntPtr<DummyFileSystem> Middle(new DummyFileSystem());  in TEST()  local
302   O->pushOverlay(Middle);  in TEST()
315   Middle->addRegularFile("/foo");  in TEST()
316   StatusM = Middle->status("/foo");  in TEST()
767   IntrusiveRefCntPtr<DummyFileSystem> Middle(new DummyFileSystem());  in TEST()  local
771   O->pushOverlay(Middle);  in TEST()
791   Middle->addDirectory("/a");  in TEST()
792   Middle->addDirectory("/a/b");  in TEST()
793   Middle->addDirectory("/a/b/c");  in TEST()
794   Middle->addRegularFile("/a/b/c/d");  in TEST()
795   Middle->addRegularFile("/hiddenByUp");  in TEST()
809   IntrusiveRefCntPtr<DummyFileSystem> Middle(new DummyFileSystem());  in TEST()  local
813   O->pushOverlay(Middle);  in TEST()
819   Middle->addRegularFile("/file2");  in TEST()
829   IntrusiveRefCntPtr<DummyFileSystem> Middle(new DummyFileSystem());  in TEST()  local
833   O->pushOverlay(Middle);  in TEST()
840   Middle->addRegularFile("/onlyInMid");  in TEST()
841   Middle->addRegularFile("/hiddenByMid");  in TEST()
842   Middle->addDirectory("/hiddenByUp");  in TEST()