def test_set_params(self, teardown):
step = DummyEstimator()
new_params_wrong = {"non_existent_param": 42}
with pytest.raises(ValueError):
step.set_params(**new_params_wrong)
new_params = {"x": 456}
step.set_params(**new_params)
params = step.get_params()
expected = {"x": 456, "y": "abc"}
assert params == expected
def test_get_params(self, teardown):
step = DummyEstimator()
params = step.get_params()
expected = {"x": 123, "y": "abc"}
assert params == expected