def test_iteration_warnings():
"""Test that the correct warning is raised beyond the iteration limit."""
fac = LinearFactory(X_VALS)
with warns(
ConvergenceWarning,
match=r"Factory iteration loop stopped before convergence.",
):
fac.iterate(lambda scale_factor: 1.0, max_iterations=3)
def test_linear_extr():
"""Tests extrapolation with a LinearFactory."""
seeded_f = apply_seed_to_func(f_lin, SEED)
fac = LinearFactory(X_VALS)
assert fac.opt_params == []
fac.iterate(seeded_f)
assert np.isclose(fac.reduce(), seeded_f(0, err=0), atol=CLOSE_TOL)
assert np.allclose(fac.opt_params, [B, A], atol=CLOSE_TOL)