213   IntrusiveRefCntPtr<DummyFileSystem> Upper(new DummyFileSystem());  in TEST()  local
216   O->pushOverlay(Upper);  in TEST()
219   Upper->addDirectory("/upper-only");  in TEST()
228   Status1 = Upper->status("/upper-only");  in TEST()
238   IntrusiveRefCntPtr<DummyFileSystem> Upper(new DummyFileSystem());  in TEST()  local
241   O->pushOverlay(Upper);  in TEST()
245   Upper->addDirectory("/both", sys::fs::owner_all | sys::fs::group_read);  in TEST()
252   Upper->addRegularFile("/both/bar", sys::fs::owner_write);  in TEST()
374   IntrusiveRefCntPtr<DummyFileSystem> Upper(new DummyFileSystem());  in TEST()  local
377   O->pushOverlay(Upper);  in TEST()
385   Upper->addRegularFile("/file2");  in TEST()
393   Upper->addDirectory("/dir2");  in TEST()
394   Upper->addRegularFile("/dir2/foo");  in TEST()
405   IntrusiveRefCntPtr<DummyFileSystem> Upper(new DummyFileSystem());  in TEST()  local
409   O->pushOverlay(Upper);  in TEST()
419   Upper->addDirectory("/dir");  in TEST()
420   Upper->addRegularFile("/dir/file2");  in TEST()
436   Upper->addDirectory("/dir2");  in TEST()
437   Upper->addRegularFile("/dir2/foo");  in TEST()
438   Upper->addRegularFile("/hiddenByUp");  in TEST()
453   IntrusiveRefCntPtr<DummyFileSystem> Upper(new DummyFileSystem());  in TEST()  local
457   O->pushOverlay(Upper);  in TEST()
466   Upper->addRegularFile("/file3");  in TEST()
476   IntrusiveRefCntPtr<DummyFileSystem> Upper(new DummyFileSystem());  in TEST()  local
480   O->pushOverlay(Upper);  in TEST()
489   Upper->addRegularFile("/onlyInUp", sys::fs::owner_all);  in TEST()
490   Upper->addRegularFile("/hiddenByUp", sys::fs::owner_all);  in TEST()