import pytest
from django.core.exceptions import ValidationError

from apps.certificates.models import CertificateTemplate, UserCertificate, _generate_certificate_code


pytestmark = pytest.mark.unit


@pytest.mark.parametrize("score", [None, "invalid", -1, 101])
def test_invalid_certificate_scores_are_rejected(score):
    with pytest.raises(ValidationError):
        CertificateTemplate()._validate_score(score)


def test_valid_scores_and_short_codes():
    assert CertificateTemplate()._validate_score("75") == 75
    assert len(_generate_certificate_code()) == 10
    assert UserCertificate(score=75).score_label == "Perfect"
    assert UserCertificate(score=200).score_label == "Unknown"