def test_series_argsort(nelem, dtype, asc):
np.random.seed(0)
sr = Series((100 * np.random.random(nelem)).astype(dtype))
res = sr.argsort(ascending=asc)
if asc:
expected = np.argsort(sr.to_array(), kind="mergesort")
else:
expected = np.argsort(sr.to_array() * -1, kind="mergesort")
np.testing.assert_array_equal(expected, res.to_array())
