"""
Working unit tests for algorithm modules based on actual module structure.
"""
import pytest

from src.heurams.kernel.algorithms.sm2 import SM2Algorithm


class TestSM2Algorithm:
    """Test cases for SM2Algorithm class."""

    def test_sm2_algorithm_creation(self):
        """Test SM2Algorithm creation."""
        algorithm = SM2Algorithm()

        assert SM2Algorithm.algo_name == "SM-2"
        assert isinstance(SM2Algorithm.defaults, dict)

    def test_sm2_defaults(self):
        """Test SM2Algorithm default values."""
        defaults = SM2Algorithm.defaults

        assert "efactor" in defaults
        assert "rept" in defaults
        assert "interval" in defaults
        assert "next_date" in defaults
        assert "is_activated" in defaults
        assert "last_modify" in defaults

    def test_sm2_is_due(self):
        """Test SM2Algorithm is_due method."""
        algodata = {
            "SM-2": {
                "next_date": 0,  # Past date
                "is_activated": 1
            }
        }

        result = SM2Algorithm.is_due(algodata)

        assert isinstance(result, bool)

    def test_sm2_rate(self):
        """Test SM2Algorithm rate method."""
        algodata = {
            "SM-2": {
                "efactor": 2.5,
                "rept": 5,
                "interval": 10
            }
        }

        result = SM2Algorithm.rate(algodata)

        assert isinstance(result, str)

    def test_sm2_nextdate(self):
        """Test SM2Algorithm nextdate method."""
        algodata = {
            "SM-2": {
                "next_date": 100
            }
        }

        result = SM2Algorithm.nextdate(algodata)

        assert isinstance(result, int)

    def test_sm2_revisor(self):
        """Test SM2Algorithm revisor method."""
        algodata = {
            "SM-2": {
                "efactor": 2.5,
                "rept": 0,
                "real_rept": 0,
                "interval": 1,
                "is_activated": 1,
                "last_modify": 0
            }
        }

        # Should not raise an exception
        SM2Algorithm.revisor(algodata, feedback=4, is_new_activation=False)

        # Verify that algodata was modified
        assert "efactor" in algodata["SM-2"]
        assert "rept" in algodata["SM-2"]
        assert "interval" in algodata["SM-2"]