def test_string_boolean(self):
"""Validation: an error should be raised when the type is wrong."""
from natcap.invest import validation
for non_boolean_value in ('true', 1, [], set()):
self.assertTrue(
isinstance(validation.check_boolean(non_boolean_value), str))
def test_invalid_string(self):
"""Validation: test when invalid strings are passed."""
from natcap.invest import validation
error_msg = validation.check_boolean('not clear')
self.assertTrue(isinstance(error_msg, str))
self.assertTrue('must be either True or False' in error_msg)
def test_actual_bool(self):
"""Validation: test when boolean type objects are passed."""
from natcap.invest import validation
self.assertEqual(None, validation.check_boolean(True))
self.assertEqual(None, validation.check_boolean(False))