def test_wrong_filepath_constructor(self):
f = File(filepath='/non-exist-file')
f.make_tuple()
def test_wrong_filepath(self):
f = File()
f.path = '/non-exist-file'
f.make_tuple()
def test_make_tuple(self):
f = File(filepath=path.join(testdatadir, 'Lenna.png'))
f.make_tuple()