mcp-office-tools/tests/test_server.py

"""Test suite for MCP Office Tools server with mixin architecture."""

import pytest
import tempfile
import os
from pathlib import Path
from unittest.mock import patch, MagicMock

# FastMCP testing - using direct tool access

from mcp_office_tools.server import app
from mcp_office_tools.utils import OfficeFileError


class TestServerInitialization:
    """Test server initialization and basic functionality."""

    def test_app_creation(self):
        """Test that FastMCP app is created correctly."""
        assert app is not None
        assert hasattr(app, 'get_tools')

    @pytest.mark.asyncio
    async def test_all_mixins_tools_registered(self):
        """Test that all mixin tools are registered correctly."""
        # Get all registered tool names
        tool_names = await app.get_tools()
        tool_names_set = set(tool_names)

        # Expected tools from all mixins
        expected_universal_tools = {
            "extract_text",
            "extract_images",
            "extract_metadata",
            "detect_office_format",
            "analyze_document_health",
            "get_supported_formats"
        }
        expected_word_tools = {"convert_to_markdown"}

        # Verify universal tools are registered
        assert expected_universal_tools.issubset(tool_names_set), f"Missing universal tools: {expected_universal_tools - tool_names_set}"

        # Verify word tools are registered
        assert expected_word_tools.issubset(tool_names_set), f"Missing word tools: {expected_word_tools - tool_names_set}"

        # Verify minimum number of tools
        assert len(tool_names) >= 7  # 6 universal + 1 word (+ future Excel/PowerPoint tools)

    def test_mixin_composition_works(self):
        """Test that mixin composition created the expected server structure."""
        # Import the server module to ensure all mixins are initialized
        import mcp_office_tools.server as server_module

        # Verify the mixins were created
        assert hasattr(server_module, 'universal_mixin')
        assert hasattr(server_module, 'word_mixin')
        assert hasattr(server_module, 'excel_mixin')
        assert hasattr(server_module, 'powerpoint_mixin')

        # Verify each mixin has the correct app reference
        assert server_module.universal_mixin.app == app
        assert server_module.word_mixin.app == app
        assert server_module.excel_mixin.app == app
        assert server_module.powerpoint_mixin.app == app


class TestToolAccess:
    """Test tool accessibility and metadata."""

    @pytest.mark.asyncio
    async def test_get_tool_metadata(self):
        """Test getting tool metadata through FastMCP API."""
        # Test that we can get tool metadata
        tool = await app.get_tool("get_supported_formats")

        assert tool is not None
        assert tool.name == "get_supported_formats"
        assert "Get list of all supported Office document formats" in tool.description
        assert hasattr(tool, 'fn')  # Has the actual function

    @pytest.mark.asyncio
    async def test_all_expected_tools_accessible(self):
        """Test that all expected tools are accessible via get_tool."""
        expected_tools = [
            "extract_text",
            "extract_images",
            "extract_metadata",
            "detect_office_format",
            "analyze_document_health",
            "get_supported_formats",
            "convert_to_markdown"
        ]

        for tool_name in expected_tools:
            tool = await app.get_tool(tool_name)
            assert tool is not None, f"Tool {tool_name} should be accessible"
            assert tool.name == tool_name
            assert hasattr(tool, 'fn'), f"Tool {tool_name} should have a function"

    @pytest.mark.asyncio
    async def test_tool_function_binding(self):
        """Test that tools are properly bound to mixin instances."""
        # Get a universal tool
        universal_tool = await app.get_tool("get_supported_formats")
        assert 'UniversalMixin' in str(type(universal_tool.fn.__self__))

        # Get a word tool
        word_tool = await app.get_tool("convert_to_markdown")
        assert 'WordMixin' in str(type(word_tool.fn.__self__))


class TestMixinIntegration:
    """Test integration between different mixins."""

    @pytest.mark.asyncio
    async def test_universal_and_word_tools_coexist(self):
        """Test that universal and word tools can coexist properly."""
        # Verify both universal and word tools are available
        # This test confirms the mixin composition works correctly

        # Get tools from both mixins
        universal_tool = await app.get_tool("get_supported_formats")
        word_tool = await app.get_tool("convert_to_markdown")

        # Verify they're bound to different mixin instances
        assert universal_tool.fn.__self__ != word_tool.fn.__self__
        assert 'UniversalMixin' in str(type(universal_tool.fn.__self__))
        assert 'WordMixin' in str(type(word_tool.fn.__self__))

        # Verify both mixins have the same app reference
        assert universal_tool.fn.__self__.app == word_tool.fn.__self__.app == app

    @pytest.mark.asyncio
    async def test_no_tool_name_conflicts(self):
        """Test that there are no tool name conflicts between mixins."""
        tool_names = await app.get_tools()

        # Verify no duplicates
        assert len(tool_names) == len(set(tool_names)), "Tool names should be unique"

        # Verify expected count
        assert len(tool_names) == 7, f"Expected 7 tools, got {len(tool_names)}: {tool_names}"


if __name__ == "__main__":
    pytest.main([__file__, "-v"])