def test_combine_codelists():
list_1 = codelist(["A", "B", "C"], system="ctv3")
list_2 = codelist(["X", "Y", "Z"], system="ctv3")
combined = combine_codelists(list_1, list_2)
expected = codelist(["A", "B", "C", "X", "Y", "Z"], system="ctv3")
assert combined == expected
assert combined.system == expected.system
def test_combine_codelists_with_categories():
list_1 = codelist([("A", "foo"), ("B", "bar")], system="icd10")
list_2 = codelist([("X", "foo"), ("Y", "bar")], system="icd10")
combined = combine_codelists(list_1, list_2)
expected = codelist([("A", "foo"), ("B", "bar"), ("X", "foo"),
("Y", "bar")],
system="icd10")
assert combined == expected
assert combined.system == expected.system
def test_combine_codelists_raises_error_on_inconsistent_categorisation():
list_1 = codelist([("A", "foo"), ("B", "bar")], system="icd10")
list_2 = codelist([("X", "foo"), ("B", "foo")], system="icd10")
with pytest.raises(ValueError):
combine_codelists(list_1, list_2)
def test_combine_codelists_raises_error_for_mixed_systems():
list_1 = codelist(["A", "B", "C"], system="ctv3")
list_2 = codelist(["X", "Y", "Z"], system="icd10")
with pytest.raises(ValueError):
combine_codelists(list_1, list_2)
