def test_invert_dict_multi_valued():
d = {'foo': 'bar',
'baz': 'bar'}
res = invert_dict(d)
assert res == {'bar': set(['foo', 'baz'])}
def test_invert_dict_multi_valued():
d = {'foo': 'bar', 'baz': 'bar'}
res = invert_dict(d)
assert res == {'bar': set(['foo', 'baz'])}
def test_invert_dict_single_valued():
d = {'foo': 'bar',
'baz': 'qux'}
res = invert_dict(d)
assert res == {'bar': set(['foo']), 'qux': set(['baz'])}
def test_invert_dict_single_valued():
d = {'foo': 'bar', 'baz': 'qux'}
res = invert_dict(d)
assert res == {'bar': set(['foo']), 'qux': set(['baz'])}
