import random

from imwald.core.nature_username import random_nature_username


def test_random_nature_username_format() -> None:
    s = random_nature_username(rng=random.Random(0))
    parts = s.split()
    assert len(parts) == 2
    assert s == s.lower()


def test_random_nature_username_deterministic() -> None:
    a = random_nature_username(rng=random.Random(12345))
    b = random_nature_username(rng=random.Random(12345))
    assert a == b