def test_expression_failure_string(self):
"""Validation: test when string value does not meet the expression."""
from natcap.invest import validation
error_msg = validation.check_number("35", 'int(value) < 0')
self.assertTrue('does not meet condition' in error_msg)
def test_expression_failure(self):
"""Validation: test when a number does not meet the expression."""
from natcap.invest import validation
error_msg = validation.check_number(35, 'float(value) < 0')
self.assertTrue('does not meet condition' in error_msg)
def test_expression(self):
"""Validation: test that we can use numeric expressions."""
from natcap.invest import validation
self.assertEqual(
None, validation.check_number(35, '(value < 100) & (value > 4)'))
def test_expression_missing_value(self):
"""Validation: test the expression string for the 'value' term."""
from natcap.invest import validation
with self.assertRaises(AssertionError):
error_msg = validation.check_number(35, 'foo < 5')
def test_string(self):
"""Validation: test when a string is not a number."""
from natcap.invest import validation
error_msg = validation.check_number('this is a string')
self.assertTrue('could not be interpreted as a number' in error_msg)
