def test_soundex_couples(self):
blocking = SoundexBlocking(ref_attr_index=1, target_attr_index=1,
language='english')
blocking.fit(SOUNDEX_REFSET, SOUNDEX_TARGETSET)
pairs = list(blocking.iter_id_pairs())
self.assertEqual(len(pairs), 8)
for pair in SOUNDEX_PAIRS:
self.assertIn(pair, pairs)