def test_allow_all(self):
differences = [Missing('xxx'), Extra('yyy')]
with allow_only(differences):
raise DataError('example error', [Missing('xxx'), Extra('yyy')])
# Order of differences should not matter!
differences = [Extra('yyy'), Missing('xxx')]
with allow_only(differences):
raise DataError('example error', reversed(differences))
def test_no_exception(self):
with self.assertRaises(AssertionError) as cm:
with allow_only([Missing('xxx')]):
pass # No exceptions raised
exc = cm.exception
self.assertEqual('No differences found: allow_only', str(exc))
def test_allow_one_but_find_duplicate(self):
with self.assertRaises(DataError) as cm:
with allow_only(Extra('xxx')):
raise DataError('example error', [Extra('xxx'), Extra('xxx')])
result_string = str(cm.exception)
self.assertEqual("example error:\n xExtra('xxx')", result_string)
def test_allow_duplicate_but_find_only_one(self):
with self.assertRaises(DataError) as cm:
with allow_only([Extra('xxx'), Extra('xxx')]):
raise DataError('example error', [Extra('xxx')])
result_string = str(cm.exception)
self.assertEqual("Allowed difference not found:\n Extra('xxx')", result_string)
def test_not_found(self):
with self.assertRaises(DataError) as cm:
with allow_only([Extra('xxx'), Missing('yyy')]):
raise DataError('example error', [Extra('xxx')])
result_str = str(cm.exception)
self.assertTrue(result_str.startswith('Allowed difference not found'))
result_diffs = list(cm.exception.differences)
self.assertEqual([Missing('yyy')], result_diffs)
def test_allow_some(self):
with self.assertRaises(DataError) as cm:
with allow_only(Extra('xxx'), 'example allowance'):
raise DataError('example error', [Extra('xxx'), Missing('yyy')])
result_str = str(cm.exception)
self.assertEqual("example allowance: example error:\n Missing('yyy')", result_str)
result_diffs = list(cm.exception.differences)
self.assertEqual([Missing('yyy')], result_diffs)
def test_nested_allowances(self):
"""A quick integration test to make sure allowances nest as
required.
"""
with allow_only(Deviation(-4, 70, label1='b')): # <- specified diff only
with allow_deviation(3): # <- tolerance of +/- 3
with allow_percent_deviation(0.02): # <- tolerance of +/- 2%
differences = [
Deviation(+3, 65, label1='a'),
Deviation(-4, 70, label1='b'),
Deviation(+5, 250, label1='c'),
]
raise DataError('example error', differences)
