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import pytest
from deepmerge import Merger
@pytest.fixture
def custom_merger():
def merge_sets(merger, path, base, nxt):
base |= nxt
return base
def merge_list(merger, path, base, nxt):
if len(nxt) > 0:
base.append(nxt[-1])
return base
return Merger(
[
(list, merge_list),
(dict, "merge"),
(set, merge_sets)
],
[],
[],
)
def test_custom_merger_applied(custom_merger):
result = custom_merger.merge({"foo"}, {"bar"})
assert result == {"foo", "bar"}
def test_custom_merger_list(custom_merger):
result = custom_merger.merge([1, 2, 3], [4, 5, 6])
assert result == [1, 2, 3, 6]
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