"""Tests for module rules, threshold logic, and gating."""



class TestModuleRules:
    """Test pass threshold configuration and enforcement."""

    def test_default_pass_threshold(self):
        """Default pass threshold should be 70%."""
        threshold = 70.0
        assert threshold == 70.0

    def test_custom_pass_threshold(self):
        """Custom pass threshold can be set per module."""
        threshold = 80.0
        score = 75.0
        assert score < threshold, "Score below custom threshold should not pass"

    def test_score_meets_threshold(self):
        threshold = 70.0
        score = 70.0
        assert score >= threshold, "Score meeting threshold should pass"

    def test_score_exceeds_threshold(self):
        threshold = 70.0
        score = 85.0
        assert score >= threshold

    def test_score_below_threshold(self):
        threshold = 70.0
        score = 65.0
        assert score < threshold

    def test_mandatory_module_gating(self):
        """Mandatory modules require both threshold met AND sign-off."""
        is_mandatory = True
        is_passed = True
        signed_off = False
        # Without sign-off, module should not be complete
        is_complete = is_mandatory and is_passed and signed_off
        assert is_complete is False

    def test_mandatory_module_complete(self):
        is_mandatory = True
        is_passed = True
        signed_off = True
        is_complete = is_mandatory and is_passed and signed_off
        assert is_complete is True

    def test_optional_module_no_signoff_needed(self):
        is_mandatory = False
        is_passed = True
        signed_off = False
        # Optional modules only need to pass
        is_complete = is_passed if not is_mandatory else (is_passed and signed_off)
        assert is_complete is True


class TestScoreCalculation:
    """Test score calculation logic."""

    def test_perfect_score(self):
        correct = 10
        total = 10
        score = (correct / total * 100) if total > 0 else 0.0
        assert score == 100.0

    def test_zero_score(self):
        correct = 0
        total = 10
        score = (correct / total * 100) if total > 0 else 0.0
        assert score == 0.0

    def test_partial_score(self):
        correct = 7
        total = 10
        score = (correct / total * 100) if total > 0 else 0.0
        assert score == 70.0

    def test_no_questions(self):
        correct = 0
        total = 0
        score = (correct / total * 100) if total > 0 else 0.0
        assert score == 0.0


class TestWeakTopics:
    """Test weak topic identification logic."""

    def test_weak_topic_identified(self):
        """Topic with <60% accuracy is weak."""
        total = 10
        correct = 4
        accuracy = correct / total
        is_weak = accuracy < 0.6
        assert is_weak is True

    def test_strong_topic_not_weak(self):
        total = 10
        correct = 8
        accuracy = correct / total
        is_weak = accuracy < 0.6
        assert is_weak is False

    def test_weakness_ratio(self):
        total = 10
        correct = 3
        weakness_ratio = 1.0 - (correct / total)
        assert weakness_ratio == 0.7


class TestUnlimitedReplays:
    """Test that replays are unlimited (max_replays = None)."""

    def test_no_limit_means_unlimited(self):
        max_replays = None  # null = unlimited
        attempt_count = 100
        can_replay = max_replays is None or attempt_count < max_replays
        assert can_replay is True

    def test_with_limit(self):
        max_replays = 3
        attempt_count = 3
        can_replay = max_replays is None or attempt_count < max_replays
        assert can_replay is False


class TestSignoffFlow:
    """Test sign-off flow logic."""

    def test_signoff_approved_completes_module(self):
        signoff_status = "approved"
        is_passed = True
        is_mandatory = True
        # Module complete only if passed and signed off (for mandatory)
        is_complete = is_passed and (
            signoff_status == "approved" if is_mandatory else True
        )
        assert is_complete is True

    def test_signoff_rejected_blocks(self):
        signoff_status = "rejected"
        is_passed = True
        is_mandatory = True
        is_complete = is_passed and (
            signoff_status == "approved" if is_mandatory else True
        )
        assert is_complete is False

    def test_signoff_pending_blocks(self):
        signoff_status = "pending"
        is_passed = True
        is_mandatory = True
        is_complete = is_passed and (
            signoff_status == "approved" if is_mandatory else True
        )
        assert is_complete is False