def test_generates_valid_number_of_specified_length(self):
"""should generate a valid number of specified length."""
number = luhn.generate(5)
self.assertEqual(len(number), 5)
self.assertTrue(luhn.is_valid(number))
def test_decimal_number_is_invalid(self):
"""should invalidate a decimal number."""
invalid = 12.3
self.assertFalse(luhn.is_valid(invalid))
def test_negative_number_is_invalid(self):
"""should invalidate a negative number."""
invalid = -123
self.assertFalse(luhn.is_valid(invalid))
def test_invalidates_invalid_number(self):
"""should invalidate an invalid number."""
invalid = 79927398712
self.assertFalse(luhn.is_valid(invalid))
def test_validates_valid_number_as_string(self):
"""should validate a valid number as a string."""
valid = '79927398713'
self.assertTrue(luhn.is_valid(valid))
def test_validates_valid_number(self):
"""should validate a valid number."""
valid = 79927398713
self.assertTrue(luhn.is_valid(valid))