def test_success_le_trials(self):
""" Test Case to ensure the correct number of subjects are output"""
self.assertRaises(ValueError, lambda: randomization.double_biased_coin_urn(6, 5, 7, 8))
self.assertRaises(ValueError, lambda: randomization.double_biased_coin_urn(6, 7, 9, 8))
self.assertRaises(ValueError, lambda: randomization.double_biased_coin_urn(6, 5, 7, 5))
result = randomization.double_biased_coin_urn(6, 6, 7, 8)
self.assertEqual(len(result), 1)
result = randomization.double_biased_coin_urn(6, 8, 7, 7)
self.assertEqual(len(result), 1)
def test_length(self):
""" Test Case to ensure the correct number of subjects are output"""
result = randomization.double_biased_coin_urn(5, 6, 7, 8)
self.assertEqual(len(result), 1)