def test_transform_power(random_df):
data = random_df
transformed = utils.transform(data, "power")
assert np.isclose(transformed, np.sqrt(data.values)).all()
def test_transform_invalid_mode(random_df):
data = random_df
with pytest.raises(ValueError):
utils.transform(data, "invalid_mode")
def test_transform_log(random_df):
data = random_df
transformed = utils.transform(data, "log")
assert np.isclose(transformed, np.log10(data.values)).all()