"""Normalisierung Übung ↔ Fähigkeit Intensität."""
from routers.exercises import normalize_exercise_skill_intensity


def test_normalize_exercise_skill_intensity_defaults_to_mittel():
    assert normalize_exercise_skill_intensity(None) == "mittel"
    assert normalize_exercise_skill_intensity("") == "mittel"
    assert normalize_exercise_skill_intensity("—") == "mittel"


def test_normalize_exercise_skill_intensity_canonical():
    assert normalize_exercise_skill_intensity("niedrig") == "niedrig"
    assert normalize_exercise_skill_intensity("mittel") == "mittel"
    assert normalize_exercise_skill_intensity("hoch") == "hoch"


def test_normalize_exercise_skill_intensity_legacy_aliases():
    assert normalize_exercise_skill_intensity("low") == "niedrig"
    assert normalize_exercise_skill_intensity("medium") == "mittel"
    assert normalize_exercise_skill_intensity("high") == "hoch"