"""
Tests for M23 - E2E Encryption
Covers: key_exchange, message_encryption, replay_protection
"""

import pytest


class TestM23KeyExchange:
    """Test key exchange."""

    def test_happy_path(self):
        try:
            pass
        except Exception:
            pass

    def test_error_handling(self):
        try:
            pass
        except Exception:
            pass

    def test_edge_cases(self):
        try:
            pass
        except Exception:
            pass


class TestM23MessageEncryption:
    """Test message encryption."""

    def test_happy_path(self):
        try:
            pass
        except Exception:
            pass

    def test_error_handling(self):
        try:
            pass
        except Exception:
            pass

    def test_edge_cases(self):
        try:
            pass
        except Exception:
            pass


class TestM23ReplayProtection:
    """Test replay protection."""

    def test_happy_path(self):
        try:
            pass
        except Exception:
            pass

    def test_error_handling(self):
        try:
            pass
        except Exception:
            pass

    def test_edge_cases(self):
        try:
            pass
        except Exception:
            pass