class TestNextNum(unittest2.TestCase):
def setUp(self):
values = [(-1, 0.01), (0, 0.3), (1, 0.58), (2, 0.1), (3, 0.01)]
self.random_generator = RandomGen(values)
def assertListAlmostEqual(self, a, b):
for a, b in zip(a, b):
self.assertAlmostEqual(a, b)
def test_create_cdf_bad_probabilities(self):
values = [0.2]
with self.assertRaises(InvalidProbabilityTotalException):
create_cdf(values)
def test_create_cdf(self):
values = [0.01, 0.3, 0.58, 0.1, 0.01]
self.assertListAlmostEqual(create_cdf(values), [0.01, 0.31, 0.89, 0.99, 1])
@mock.patch('next_num.next_num.random_point', return_value=0.2)
def test_next_num(self, _):
self.assertEqual(0, self.random_generator.next_num())
@mock.patch('next_num.next_num.random_point', return_value=0.34)
def test_next_num2(self, _):
self.assertEqual(1, self.random_generator.next_num())
@mock.patch('next_num.next_num.random_point', return_value=0.001)
def test_next_num3(self, _):
self.assertEqual(-1, self.random_generator.next_num())
def setUp(self):
values = [(-1, 0.01), (0, 0.3), (1, 0.58), (2, 0.1), (3, 0.01)]
self.random_generator = RandomGen(values)
