def test_str_truncation(self):
# Assert optional truncation behavior.
err = ValidationError([
MinimalDifference('A'),
MinimalDifference('B'),
MinimalDifference('C'),
], 'invalid data')
self.assertIsNone(err._should_truncate)
self.assertIsNone(err._truncation_notice)
no_truncation = """
invalid data (3 differences): [
MinimalDifference('A'),
MinimalDifference('B'),
MinimalDifference('C'),
]
"""
no_truncation = textwrap.dedent(no_truncation).strip()
self.assertEqual(str(err), no_truncation)
# Truncate without notice.
err._should_truncate = lambda line_count, char_count: char_count > 35
err._truncation_notice = None
truncation_witout_notice = """
invalid data (3 differences): [
MinimalDifference('A'),
...
"""
truncation_witout_notice = textwrap.dedent(
truncation_witout_notice).strip()
self.assertEqual(str(err), truncation_witout_notice)
# Truncate and use truncation notice.
err._should_truncate = lambda line_count, char_count: char_count > 35
err._truncation_notice = 'Message truncated.'
truncation_plus_notice = """
invalid data (3 differences): [
MinimalDifference('A'),
...
Message truncated.
"""
truncation_plus_notice = textwrap.dedent(
truncation_plus_notice).strip()
self.assertEqual(str(err), truncation_plus_notice)
def test_str_sorting(self):
"""Check that string shows differences sorted by arguments."""
self.maxDiff = None
# Check sorting of non-mapping container.
err = ValidationError([
MinimalDifference('Z', 'Z'),
MinimalDifference('Z'),
MinimalDifference(1, 'C'),
MinimalDifference('B', 'C'),
MinimalDifference('A'),
MinimalDifference(1.5),
MinimalDifference(True),
MinimalDifference(0),
MinimalDifference(None)
])
expected = """
9 differences: [
MinimalDifference(None),
MinimalDifference(0),
MinimalDifference(True),
MinimalDifference(1, 'C'),
MinimalDifference(1.5),
MinimalDifference('A'),
MinimalDifference('B', 'C'),
MinimalDifference('Z'),
MinimalDifference('Z', 'Z'),
]
"""
expected = textwrap.dedent(expected).strip()
self.assertEqual(str(err), expected)
# Make sure that all differences are being sorted (not just
# those being displayed).
err._should_truncate = lambda lines, chars: lines > 4
expected = """
9 differences: [
MinimalDifference(None),
MinimalDifference(0),
MinimalDifference(True),
MinimalDifference(1, 'C'),
...
"""
expected = textwrap.dedent(expected).strip()
self.assertEqual(str(err), expected)
# Check sorting of non-mapping container.
err = ValidationError(
{
('C', 3): [MinimalDifference('Z', 3),
MinimalDifference(1, 2)],
('A', 'C'): MinimalDifference('A'),
'A': [MinimalDifference('C'),
MinimalDifference(1)],
2: [MinimalDifference('B'),
MinimalDifference('A')],
1: MinimalDifference('A'),
(None, 4): MinimalDifference('A'),
}, 'description string')
expected = """
description string (6 differences): {
1: MinimalDifference('A'),
2: [MinimalDifference('A'), MinimalDifference('B')],
'A': [MinimalDifference(1), MinimalDifference('C')],
(None, 4): MinimalDifference('A'),
('A', 'C'): MinimalDifference('A'),
('C', 3): [MinimalDifference(1, 2), MinimalDifference('Z', 3)],
}
"""
expected = textwrap.dedent(expected).strip()
self.assertEqual(str(err), expected)
