def test_value_counts(stream):
s = pd.Series(['a', 'b', 'a'])
a = Series(example=s, stream=stream)
result = a.value_counts().stream.gather().sink_to_list()
a.emit(s)
a.emit(s)
assert_eq(result[-1], pd.concat([s, s], axis=0).value_counts())
def test_value_counts(stream):
s = cudf.Series([1, 2, 1])
a = Series(example=s, stream=stream)
b = a.value_counts()
assert b._stream_type == 'updating'
result = b.stream.gather().sink_to_list()
a.emit(s)
a.emit(s)
assert_eq(result[-1], cudf.concat([s, s]).value_counts())
