@Test
public void testVerifyChecksumPassthru() {

  FileSystem mockFs = mock(FileSystem.class);
  FileSystem fs = new FilterFileSystem(mockFs);
  fs.setVerifyChecksum(false);
  verify(mockFs).setVerifyChecksum(eq(false));
  reset(mockFs);
  fs.setVerifyChecksum(true);
  verify(mockFs).setVerifyChecksum(eq(true));
}