def test_three_argument_stop(self):
letters = AlphabetRange('C', 'G', 2)
last = None
expected = 'E'
for ch in letters:
last = ch
self.assertEqual(last, expected)
def test_one_argument_stop(self):
letters = AlphabetRange('D')
last = None
expected = 'C'
for ch in letters:
last = ch
self.assertEqual(last, expected)
def test_three_argument_start(self):
letters = AlphabetRange('C', 'G', 2)
first = None
expected = 'C'
for ch in letters:
first = ch
break
self.assertEqual(first, expected)
def test_one_argument_default_start(self):
letters = AlphabetRange('D')
first = None
expected = 'A'
for ch in letters:
first = ch
break
self.assertEqual(first, expected)
def test_one_argument_default_step(self):
letters = AlphabetRange('D')
expected = [
'A',
'B',
'C',
]
for i, ch in enumerate(letters):
self.assertEqual(ch, expected[i])
def test_equals_true(self):
letters1 = AlphabetRange('D')
letters2 = AlphabetRange('A', 'D')
self.assertTrue(letters1 == letters2)
letters2 = AlphabetRange('A', 'D')
letters3 = AlphabetRange('A', 'D', 1)
self.assertTrue(letters2 == letters3)
letters1 = AlphabetRange('D')
letters3 = AlphabetRange('A', 'D', 1)
self.assertTrue(letters3 == letters1)
def test_equals_false_start(self):
letters1 = AlphabetRange('E')
letters2 = AlphabetRange('B', 'E')
self.assertTrue(letters1 != letters2)
def test_equals_false_end(self):
letters1 = AlphabetRange('E')
letters2 = AlphabetRange('F')
self.assertTrue(letters1 != letters2)
def test_three_argument_step(self):
letters = AlphabetRange('C', 'H', 2)
expected = ['C', 'E', 'G']
for i, ch in enumerate(letters):
self.assertEqual(ch, expected[i])
def test_two_argument_default_step(self):
letters = AlphabetRange('C', 'G')
expected = ['C', 'D', 'E', 'F']
for i, ch in enumerate(letters):
self.assertEqual(ch, expected[i])
def test_equals_false_end(self):
letters1 = AlphabetRange('B', 'H', 1)
letters2 = AlphabetRange('B', 'H', 2)
self.assertTrue(letters1 != letters2)
def test_string_version(self):
expected = 'B-H,1'
observed = AlphabetRange('B', 'H', 1).__str__()
self.assertEqual(expected, observed)