"""
Example test file for convert_file tool - Implementation Reference
This file shows what the actual test implementation would look like.
This is NOT the actual implementation, just a blueprint for development.
"""
import pytest
import tempfile
import base64
from pathlib import Path
from unittest.mock import Mock, patch, AsyncMock
import json
# These imports would be actual once implemented
# from markitdown_mcp.server import MarkItDownMCPServer, MCPRequest, MCPResponse
class TestConvertFileTool:
"""Test suite for the convert_file MCP tool"""
@pytest.fixture
def mcp_server(self):
"""Create an MCP server instance for testing"""
# return MarkItDownMCPServer()
pass
@pytest.fixture
def sample_pdf_path(self):
"""Create a sample PDF file for testing"""
# Would create a real PDF file
with tempfile.NamedTemporaryFile(suffix='.pdf', delete=False) as f:
# Write minimal PDF content
f.write(b'%PDF-1.4 sample content')
return f.name
@pytest.fixture
def sample_text_content(self):
"""Sample text content for base64 testing"""
return "Hello, World! This is test content."
@pytest.mark.unit
async def test_convert_file_with_valid_path(self, mcp_server, sample_pdf_path):
"""Test convert_file tool with valid file path"""
request = MCPRequest(
id="test-1",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_path": sample_pdf_path
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-1"
assert response.result is not None
assert "content" in response.result
assert len(response.result["content"]) > 0
assert response.result["content"][0]["type"] == "text"
@pytest.mark.unit
async def test_convert_file_with_base64_content(self, mcp_server, sample_text_content):
"""Test convert_file tool with base64 encoded content"""
# Encode sample content
encoded_content = base64.b64encode(sample_text_content.encode()).decode()
request = MCPRequest(
id="test-2",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_content": encoded_content,
"filename": "test.txt"
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-2"
assert response.result is not None
assert sample_text_content in response.result["content"][0]["text"]
@pytest.mark.unit
async def test_convert_file_nonexistent_file(self, mcp_server):
"""Test convert_file tool with non-existent file"""
request = MCPRequest(
id="test-3",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_path": "/nonexistent/file.pdf"
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-3"
assert response.error is not None
assert response.error["code"] == -32602
assert "not found" in response.error["message"].lower()
@pytest.mark.unit
async def test_convert_file_missing_arguments(self, mcp_server):
"""Test convert_file tool with missing arguments"""
request = MCPRequest(
id="test-4",
method="tools/call",
params={
"name": "convert_file",
"arguments": {} # Missing required arguments
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-4"
assert response.error is not None
assert response.error["code"] == -32602
@pytest.mark.unit
async def test_convert_file_invalid_base64(self, mcp_server):
"""Test convert_file tool with invalid base64 content"""
request = MCPRequest(
id="test-5",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_content": "invalid-base64-content!@#",
"filename": "test.txt"
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-5"
assert response.error is not None
assert "base64" in response.error["message"].lower()
@pytest.mark.unit
@pytest.mark.parametrize("file_extension,content", [
(".pdf", b"%PDF-1.4 test"),
(".docx", b"PK\x03\x04"), # ZIP header for DOCX
(".txt", b"Plain text content"),
(".json", b'{"key": "value"}'),
(".csv", b"col1,col2\nval1,val2")
])
async def test_convert_file_supported_formats(self, mcp_server, file_extension, content):
"""Test convert_file tool with various supported file formats"""
with tempfile.NamedTemporaryFile(suffix=file_extension, delete=False) as f:
f.write(content)
f.flush()
request = MCPRequest(
id=f"test-format-{file_extension}",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_path": f.name
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == f"test-format-{file_extension}"
# Should succeed or fail gracefully, but not crash
assert response.result is not None or response.error is not None
@pytest.mark.unit
@patch('markitdown_mcp.server.MarkItDown')
async def test_convert_file_markitdown_error(self, mock_markitdown, mcp_server, sample_pdf_path):
"""Test convert_file tool when MarkItDown throws an exception"""
# Mock MarkItDown to raise an exception
mock_instance = mock_markitdown.return_value
mock_instance.convert.side_effect = Exception("MarkItDown conversion error")
request = MCPRequest(
id="test-6",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_path": sample_pdf_path
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-6"
assert response.error is not None
assert response.error["code"] == -32603
assert "conversion error" in response.error["message"].lower()
@pytest.mark.unit
async def test_convert_file_large_content_base64(self, mcp_server):
"""Test convert_file tool with large base64 content"""
# Create large content (1MB)
large_content = "A" * 1024 * 1024
encoded_content = base64.b64encode(large_content.encode()).decode()
request = MCPRequest(
id="test-large",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_content": encoded_content,
"filename": "large.txt"
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-large"
# Should handle large content without crashing
assert response.result is not None or response.error is not None
@pytest.mark.unit
async def test_convert_file_unicode_filename(self, mcp_server):
"""Test convert_file tool with Unicode filename"""
content = "Test content with unicode filename"
encoded_content = base64.b64encode(content.encode()).decode()
request = MCPRequest(
id="test-unicode",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_content": encoded_content,
"filename": "测试文件名.txt" # Chinese filename
}
}
)
response = await mcp_server.handle_request(request)
assert response.id == "test-unicode"
assert response.result is not None
assert "测试文件名.txt" in response.result["content"][0]["text"]
@pytest.mark.security
async def test_convert_file_path_traversal_attempt(self, mcp_server):
"""Test convert_file tool against path traversal attacks"""
malicious_paths = [
"../../../etc/passwd",
"..\\..\\..\\windows\\system32\\config\\sam",
"/etc/shadow",
"C:\\Windows\\System32\\config\\SAM"
]
for malicious_path in malicious_paths:
request = MCPRequest(
id=f"test-security-{hash(malicious_path)}",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_path": malicious_path
}
}
)
response = await mcp_server.handle_request(request)
# Should reject malicious paths
assert response.error is not None
assert response.error["code"] == -32602
@pytest.mark.performance
async def test_convert_file_timeout_behavior(self, mcp_server):
"""Test convert_file tool timeout behavior with slow conversion"""
# This would test timeout handling - implementation dependent
pass
@pytest.mark.integration
async def test_convert_file_with_missing_dependencies(self, mcp_server):
"""Test convert_file tool behavior when optional dependencies are missing"""
# This would test the graceful degradation when dependencies are missing
pass
class TestConvertFileToolEdgeCases:
"""Additional edge case tests for convert_file tool"""
@pytest.mark.unit
async def test_empty_file(self, mcp_server):
"""Test conversion of empty file"""
with tempfile.NamedTemporaryFile(suffix='.txt', delete=False) as f:
# Empty file
pass
request = MCPRequest(
id="test-empty",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_path": f.name
}
}
)
response = await mcp_server.handle_request(request)
# Should handle empty files gracefully
assert response.result is not None or response.error is not None
@pytest.mark.unit
async def test_binary_file_as_text(self, mcp_server):
"""Test conversion of binary file incorrectly identified as text"""
with tempfile.NamedTemporaryFile(suffix='.txt', delete=False) as f:
# Write binary content
f.write(b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR')
request = MCPRequest(
id="test-binary",
method="tools/call",
params={
"name": "convert_file",
"arguments": {
"file_path": f.name
}
}
)
response = await mcp_server.handle_request(request)
# Should handle binary content gracefully
assert response.result is not None or response.error is not None
# Performance and stress test examples
class TestConvertFilePerformance:
"""Performance tests for convert_file tool"""
@pytest.mark.performance
@pytest.mark.slow
async def test_large_pdf_conversion(self, mcp_server):
"""Test conversion of large PDF file"""
# Would test with a large PDF file (100+ pages)
pass
@pytest.mark.performance
async def test_concurrent_conversions(self, mcp_server):
"""Test multiple concurrent file conversions"""
# Would test concurrent request handling
pass
@pytest.mark.performance
async def test_memory_usage_large_files(self, mcp_server):
"""Test memory usage with large files"""
# Would monitor memory usage during conversion
pass
if __name__ == "__main__":
# Example of running tests
pytest.main([__file__, "-v"])
