def test_has_length_throws_error_on_notequal_length(value: str, length: int):
"""
Tests that the `has_length()` method throws an ArgumentError
when it is supplied with a not equal length.
"""
# Arrange
validator = StringValidator(value, 'value')
# Assert
with pytest.raises(ArgumentError):
# Act
validator.has_length(length)
def test_has_length_accepts_equal_length(value: str, length: int):
"""
Tests that the `has_length()` method does not throw an ArgumentError
when it is supplied with a equal length.
"""
# Arrange
validator = StringValidator(value, 'value')
# Act
try:
validator.has_length(length)
# Assert
except ArgumentError:
pytest.fail(f'`{value}` should have the length `{length}`, but an error occurred.')
def test_has_length_returns_validator_self():
"""
Tests if the `has_length()` validator method returns itself after the validation is performed,
so that additional validations can be performed.
"""
# Arrange
value = 'test'
length = 4
validator = StringValidator(value, 'value')
# Act
validator_returned = validator.has_length(length)
# Assert
assert validator_returned is validator