def test_clark_dist(self):
        """Test abydos.distance.Clark.dist."""
        # Base cases
        self.assertEqual(self.cmp.dist('', ''), 0.0)
        self.assertEqual(self.cmp.dist('a', ''), 1.0)
        self.assertEqual(self.cmp.dist('', 'a'), 1.0)
        self.assertEqual(self.cmp.dist('a', 'a'), 0.0)
        self.assertEqual(self.cmp.dist('abc', ''), 1.0)
        self.assertEqual(self.cmp.dist('', 'abc'), 1.0)
        self.assertEqual(self.cmp.dist('abc', 'abc'), 0.0)
        self.assertEqual(self.cmp.dist('abcd', 'efgh'), 1.0)

        self.assertAlmostEqual(self.cmp.dist('Nigel', 'Niall'), 0.8164965809)
        self.assertAlmostEqual(self.cmp.dist('Niall', 'Nigel'), 0.8164965809)
        self.assertAlmostEqual(self.cmp.dist('Colin', 'Coiln'), 0.8164965809)
        self.assertAlmostEqual(self.cmp.dist('Coiln', 'Colin'), 0.8164965809)
        self.assertAlmostEqual(
            self.cmp.dist('ATCAACGAGT', 'AACGATTAG'), 0.707106781
        )