def test_b(self):
        """Test compute_seepage on non-zero seepage.

        """
        seepage = 10
        expected_seepage = 29501.81
        computed_seepage = compute_seepage(self.bucket, seepage)
        self.assertAlmostEqual(expected_seepage, computed_seepage)
    def test_a(self):
        """Test compute_seepage on zero seepage.

        """
        seepage = 0
        self.assertAlmostEqual(0.0, compute_seepage(self.bucket, seepage))