"""LSP Edge Case Tests.

This module tests edge cases and error conditions in LSP (Language Server Protocol)
operations, including timeout handling, protocol errors, and connection failures.

Test Coverage:
- Timeout scenarios for LSP operations
- Protocol errors and malformed responses
- Connection failures and recovery
- Concurrent request handling
"""

import pytest
from pathlib import Path
from unittest.mock import Mock, patch, MagicMock
import time


class TestLSPTimeouts:
    """Test timeout handling in LSP operations."""

    def test_hover_request_timeout(self):
        """Test that hover requests timeout appropriately after configured duration."""
        # This is a placeholder for actual timeout testing
        # Implementation requires mocking LSP client with delayed response
        pytest.skip("Requires LSP server fixture setup")

    def test_definition_request_timeout(self):
        """Test that go-to-definition requests timeout appropriately."""
        pytest.skip("Requires LSP server fixture setup")

    def test_references_request_timeout(self):
        """Test that find-references requests timeout appropriately."""
        pytest.skip("Requires LSP server fixture setup")

    def test_concurrent_requests_with_timeout(self):
        """Test behavior when multiple requests exceed timeout threshold."""
        pytest.skip("Requires LSP server fixture setup")


class TestLSPProtocolErrors:
    """Test handling of LSP protocol errors."""

    def test_malformed_json_response(self):
        """Test handling of malformed JSON in LSP responses."""
        pytest.skip("Requires LSP client fixture")

    def test_invalid_method_error(self):
        """Test handling of unknown/invalid method calls."""
        pytest.skip("Requires LSP client fixture")

    def test_missing_required_params(self):
        """Test handling of responses with missing required parameters."""
        pytest.skip("Requires LSP client fixture")

    def test_null_result_handling(self):
        """Test that null results from LSP are handled gracefully."""
        pytest.skip("Requires LSP client fixture")


class TestLSPConnectionFailures:
    """Test LSP connection failure scenarios."""

    def test_server_not_found(self):
        """Test behavior when LSP server is not available."""
        pytest.skip("Requires LSP client fixture")

    def test_connection_dropped_mid_request(self):
        """Test handling of dropped connections during active requests."""
        pytest.skip("Requires LSP client fixture")

    def test_connection_retry_logic(self):
        """Test that connection retry logic works as expected."""
        pytest.skip("Requires LSP client fixture")

    def test_server_startup_failure(self):
        """Test handling of LSP server startup failures."""
        pytest.skip("Requires LSP server fixture")


class TestLSPResourceLimits:
    """Test LSP behavior under resource constraints."""

    def test_large_file_handling(self):
        """Test LSP operations on very large source files."""
        pytest.skip("Requires test file fixtures")

    def test_memory_pressure(self):
        """Test LSP behavior under memory pressure."""
        pytest.skip("Requires memory simulation")

    def test_concurrent_request_limits(self):
        """Test handling of too many concurrent LSP requests."""
        pytest.skip("Requires LSP client fixture")


# TODO: Implement actual tests using pytest fixtures and LSP mock objects
# The test infrastructure needs to be set up with:
# - LSP server fixture (maybe using pygls test server)
# - LSP client fixture with configurable delays/errors
# - Test file fixtures with various code patterns
