def test_value_count(self, dtype):
values = np.array([np.nan, np.nan, np.nan], dtype=dtype)
keys, counts = ht.value_count(values, True)
assert len(keys) == 0
keys, counts = ht.value_count(values, False)
assert len(keys) == 1 and np.all(np.isnan(keys))
assert counts[0] == 3
def test_value_count_stable(self, dtype, writable):
# GH12679
values = np.array([2, 1, 5, 22, 3, -1, 8]).astype(dtype)
values.flags.writeable = writable
keys, counts = ht.value_count(values, False)
tm.assert_numpy_array_equal(keys, values)
assert np.all(counts == 1)
def test_value_count(self, dtype, writable):
N = 43
expected = (np.arange(N) + N).astype(dtype)
values = np.repeat(expected, 5)
values.flags.writeable = writable
keys, counts = ht.value_count(values, False)
tm.assert_numpy_array_equal(np.sort(keys), expected)
assert np.all(counts == 5)
