def test_filter():
# Test initialization
with pytest.raises(filters.InitializationError):
filters.Filter(
Model,
'value',
comparators=['this is not a comparator'],
choices=['a', 'b', 'c', 'd'],
default='a',
nullable=False,
)
# Test is_active property
test_values = (
# if there is *any* value, the filter should be active
(False, True, True),
(False, False, True),
(True, True, True),
(True, False, True),
# if the value is None, filter is disabled
(None, None, False),
# But if it has some value, it's not!
(None, True, True),
(None, False, True))
for default, value, should_be_active in test_values:
tested_filter = filters.Filter(Model,
'value',
comparators=['eq'],
default=default)
tested_filter.update(value)
assert tested_filter.is_active == should_be_active
def test_multiselect_filter():
test_objects = [
Model(['a']),
Model(['a']),
Model(['b']),
Model(['b']),
Model(['c']),
Model(['a', 'c']),
Model(['b', 'a']),
]
tested_filter = filters.Filter(Model,
'value',
comparators=['in'],
choices=['a', 'b', 'c', 'd'],
default='a',
nullable=False,
multiple='any')
test_values = (('b', 3), ('c', 2), ('d', 0), (['a', 'b', 'c'], 7),
(['a', 'c'], 5), (['b', 'c'], 5))
# test the default value
assert len(list(tested_filter.apply(test_objects))) == 4
with pytest.raises(filters.ValidationError):
tested_filter.update('e')
tested_filter.apply(test_objects)
for value, length in test_values:
tested_filter.update(value)
assert len(list(tested_filter.apply(test_objects))) == length
def test_select_filter():
test_objects = [
Model('a'),
Model('a'),
Model('b'),
Model('b'),
Model('c'),
]
tested_filter = filters.Filter(
Model,
'value',
comparators=['in'],
choices=['a', 'b', 'c', 'd'],
default='a',
nullable=False,
)
# test the default value
assert len(list(tested_filter.apply(test_objects))) == 2
test_values = (('b', 2), ('c', 1), ('d', 0))
for value, length in test_values:
tested_filter.update(value)
assert len(list(tested_filter.apply(test_objects))) == length
with pytest.raises(filters.ValidationError):
tested_filter.update('e')
tested_filter.apply(test_objects)
tested_filter = filters.Filter(
Model,
'value',
comparators=['in'],
choices=['a', 'b'],
nullable=True,
)
tested_filter.update(None)
# the filter should indicate that it's turned off when updated with None
# and no default value is set
assert tested_filter.apply(test_objects) == -1
def create_manager():
return filters.FilterManager([
filters.Filter(Model, 'color', comparators=['eq'], default='red'),
filters.Filter(Model, 'shape', comparators=['eq'])
])