def METHOD_NAME(self) -> None:
    da1 = create_test_dataarray_attrs(var="var1")
    da2 = create_test_dataarray_attrs(var="var2")
    da2.attrs = {"wrong": "attributes"}
    original_attrs = da1.attrs
    # merge currently discards attrs, and the global keep_attrs
    # option doesn't affect this
    result = merge([da1, da2])
    assert result.attrs == original_attrs