def test_custom_value_name(self):
expected_message = 'Length of HELLO must be exactly 1. ' \
'2 found instead.'
with self.assertRaises(rf.RangeError) as ex:
rf.exact_len([2] * 2, 1, 'HELLO')
self.assertEqual(expected_message, str(ex.exception))
expected_message = 'Length of HELLO WORLD must be exactly 5. ' \
'2 found instead.'
with self.assertRaises(rf.RangeError) as ex:
rf.exact_len([2] * 2, 5, 'HELLO WORLD')
self.assertEqual(expected_message, str(ex.exception))
def test_custom_exception_type(self):
expected_message = 'Length of value must be exactly 100. ' \
'1 found instead.'
with self.assertRaises(FileNotFoundError) as ex:
rf.exact_len([2], 100, ex=FileNotFoundError)
self.assertEqual(expected_message, str(ex.exception))
expected_message = 'Length of HELLO must be exactly 100. ' \
'1 found instead.'
with self.assertRaises(FileNotFoundError) as ex:
rf.exact_len([2], 100, name='HELLO', ex=FileNotFoundError)
self.assertEqual(expected_message, str(ex.exception))
def test_expected_length_must_be_int(self):
expected_message = 'Expected length must be an integer. ' \
'NoneType found instead.'
with self.assertRaises(TypeError) as ex:
rf.exact_len([2] * 2, None)
self.assertEqual(expected_message, str(ex.exception))
expected_message = 'Expected length must be an integer. ' \
'float found instead.'
with self.assertRaises(TypeError) as ex:
rf.exact_len([2] * 2, 2.0)
self.assertEqual(expected_message, str(ex.exception))
expected_message = 'Expected length must be an integer. ' \
'float found instead.'
with self.assertRaises(TypeError) as ex:
rf.exact_len([2] * 2, float('+inf'))
self.assertEqual(expected_message, str(ex.exception))
expected_message = 'Expected length must be an integer. ' \
'float found instead.'
with self.assertRaises(TypeError) as ex:
rf.exact_len([2] * 2, float('nan'))
self.assertEqual(expected_message, str(ex.exception))
def test_negative_expected_length(self):
expected_message = 'Expected length must be non-negative. ' \
'-2 found instead.'
with self.assertRaises(ValueError) as ex:
rf.exact_len([2] * 2, -2)
self.assertEqual(expected_message, str(ex.exception))
def test_greater_length(self):
expected_message = 'Length of value must be exactly 3. ' \
'5 found instead.'
with self.assertRaises(rf.RangeError) as ex:
rf.exact_len([2] * 5, 3)
self.assertEqual(expected_message, str(ex.exception))
def test_zero_length(self):
self.assertEqual([], rf.exact_len([], 0))
def test_proper_length(self):
self.assertEqual([2] * 2, rf.exact_len([2] * 2, 2))