def test_string_or_noniterable(self):
data = 'a'
result = _require_set(data, self.requirement)
result = list(result)
self.assertEqual(len(result), 2)
self.assertIn(Missing('b'), result)
self.assertIn(Missing('c'), result)
def test_missing_and_extra(self):
data = iter(['a', 'c', 'x'])
result = _require_set(data, self.requirement)
result = list(result)
self.assertEqual(len(result), 2)
self.assertIn(Missing('b'), result)
self.assertIn(Extra('x'), result)
def test_atomic_object_handling(self):
# Non-containers are, of course, treated as atomic objects.
requirement = set([777])
self.assertIsNone(
_require_set([777], requirement),
msg='list containing one int',
)
self.assertIsNone(
_require_set(777, requirement),
msg='int, no container',
)
# Strings should treated as an atomic objects.
requirement = set(['abc'])
self.assertIsNone(
_require_set(['abc'], requirement),
msg='list containing one str',
)
self.assertIsNone(
_require_set('abc', requirement),
msg='single strings should be treated as atomic objects',
)
# Tuples should also be treated as an atomic objects.
requirement = set([('a', 'b', 'c')])
self.assertIsNone(
_require_set([('a', 'b', 'c')], requirement),
msg='list containing one tuple',
)
self.assertIsNone(
_require_set(('a', 'b', 'c'), requirement),
msg='single tuples should be treated as atomic objects',
)
def test_notfound(self):
result = _require_set(NOTFOUND, set(['a']))
self.assertEqual(list(result), [Missing('a')])
def test_duplicate_extras(self):
"""Should return only one error for each distinct extra value."""
data = iter(['a', 'b', 'c', 'x', 'x', 'x']) # <- Multiple x's.
result = _require_set(data, self.requirement)
self.assertEqual(list(result), [Extra('x')])
def test_extra(self):
data = iter(['a', 'b', 'c', 'x'])
result = _require_set(data, self.requirement)
self.assertEqual(list(result), [Extra('x')])
def test_missing(self):
data = iter(['a', 'b'])
result = _require_set(data, self.requirement)
self.assertEqual(list(result), [Missing('c')])
def test_no_difference(self):
data = iter(['a', 'b', 'c'])
result = _require_set(data, self.requirement)
self.assertIsNone(result) # No difference, returns None.