@Override protected void setUp() throws Exception { super.setUp(); fs = new DummyFileSystem(); }
@Nullable private static VirtualFile findTestFile(final int id) { return DummyFileSystem.getInstance().findById(id); }
@NotNull @Override public VirtualFileSystem getFileSystem() { return new DummyFileSystem(); }
@Override public boolean isPhysical() { final VirtualFile file = getVirtualFile(); return file != null && !(file.getFileSystem() instanceof DummyFileSystem); }