def test_merge_with():
dicts = {1: 1, 2: 2}, {1: 10, 2: 20}
assert merge_with(sum, *dicts) == {1: 11, 2: 22}
assert merge_with(tuple, *dicts) == {1: (1, 10), 2: (2, 20)}
dicts = {1: 1, 2: 2, 3: 3}, {1: 10, 2: 20}
assert merge_with(sum, *dicts) == {1: 11, 2: 22, 3: 3}
assert merge_with(tuple, *dicts) == {1: (1, 10), 2: (2, 20), 3: (3,)}
assert not merge_with(sum)
def test_merge_with(self):
D, kw = self.D, self.kw
dicts = D({1: 1, 2: 2}), D({1: 10, 2: 20})
assert merge_with(sum, *dicts, **kw) == D({1: 11, 2: 22})
assert merge_with(tuple, *dicts, **kw) == D({1: (1, 10), 2: (2, 20)})
dicts = D({1: 1, 2: 2, 3: 3}), D({1: 10, 2: 20})
assert merge_with(sum, *dicts, **kw) == D({1: 11, 2: 22, 3: 3})
assert merge_with(tuple, *dicts, **kw) == D({1: (1, 10), 2: (2, 20), 3: (3,)})
assert not merge_with(sum)
def test_merge_with_iterable_arg(self):
D, kw = self.D, self.kw
dicts = D({1: 1, 2: 2}), D({1: 10, 2: 20})
assert merge_with(sum, *dicts, **kw) == D({1: 11, 2: 22})
assert merge_with(sum, dicts, **kw) == D({1: 11, 2: 22})
assert merge_with(sum, iter(dicts), **kw) == D({1: 11, 2: 22})
def test_merge_with_iterable_arg():
dicts = {1: 1, 2: 2}, {1: 10, 2: 20}
assert merge_with(sum, *dicts) == {1: 11, 2: 22}
assert merge_with(sum, dicts) == {1: 11, 2: 22}
assert merge_with(sum, iter(dicts)) == {1: 11, 2: 22}
