def test_filePathDeltaSubdir(self):
        self.assertEquals(filePathDelta(FilePath("/foo/bar"),
                                        FilePath("/foo/bar/baz")),
                          ["baz"])
L{filePathDelta} can create a simple relative path to a child path.
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/python/test/test_release.py/FilePathDeltaTest.test_filePathDeltaSubdir