fastmcp/tests/experimental/openapi_parser/server/openapi/test_server.py
Jeremiah Lowin 3321644ad3
Replace subprocess tests with in-process async servers (#2006)
* Use anyio as testing backend

* Remove asyncio markers

* Update streamable http tests

* Replace all subprocess tests

* Replace anyio task groups with asyncio context managers in tests

- Convert run_server_async from anyio task group pattern to asyncio.create_task with async context manager
- Remove task_group fixture from conftest
- Update all test fixtures to use async with run_server_async pattern
- Remove TaskGroup imports from all test files
- Tests now work with pytest-asyncio instead of pytest-anyio

* Update test_github_provider_integration.py
2025-10-19 10:47:54 -04:00

337 lines
14 KiB
Python

"""Unit tests for FastMCPOpenAPI server."""
import httpx
import pytest
from fastmcp.client import Client
from fastmcp.experimental.server.openapi import FastMCPOpenAPI
class TestFastMCPOpenAPIBasicFunctionality:
"""Test basic FastMCPOpenAPI server functionality."""
@pytest.fixture
def simple_openapi_spec(self):
"""Simple OpenAPI spec for testing."""
return {
"openapi": "3.0.0",
"info": {"title": "Test API", "version": "1.0.0"},
"servers": [{"url": "https://api.example.com"}],
"paths": {
"/users/{id}": {
"get": {
"operationId": "get_user",
"summary": "Get user by ID",
"parameters": [
{
"name": "id",
"in": "path",
"required": True,
"schema": {"type": "integer"},
}
],
"responses": {
"200": {
"description": "User retrieved successfully",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"id": {"type": "integer"},
"name": {"type": "string"},
"email": {"type": "string"},
},
}
}
},
}
},
}
},
"/users": {
"post": {
"operationId": "create_user",
"summary": "Create a new user",
"requestBody": {
"required": True,
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"name": {"type": "string"},
"email": {"type": "string"},
},
"required": ["name", "email"],
}
}
},
},
"responses": {
"201": {
"description": "User created successfully",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"id": {"type": "integer"},
"name": {"type": "string"},
"email": {"type": "string"},
},
}
}
},
}
},
}
},
},
}
def test_server_initialization(self, simple_openapi_spec):
"""Test server initialization with OpenAPI spec."""
client = httpx.AsyncClient(base_url="https://api.example.com")
server = FastMCPOpenAPI(
openapi_spec=simple_openapi_spec, client=client, name="Test Server"
)
assert server.name == "Test Server"
# Should have initialized RequestDirector successfully
assert hasattr(server, "_director")
assert hasattr(server, "_spec")
def test_server_initialization_with_custom_name(self, simple_openapi_spec):
"""Test server initialization with custom name."""
client = httpx.AsyncClient(base_url="https://api.example.com")
server = FastMCPOpenAPI(openapi_spec=simple_openapi_spec, client=client)
# Should use default name
assert server.name == "OpenAPI FastMCP"
async def test_server_creates_tools_from_spec(self, simple_openapi_spec):
"""Test that server creates tools from OpenAPI spec."""
async with httpx.AsyncClient(base_url="https://api.example.com") as client:
server = FastMCPOpenAPI(
openapi_spec=simple_openapi_spec, client=client, name="Test Server"
)
# Test with in-memory client
async with Client(server) as mcp_client:
tools = await mcp_client.list_tools()
# Should have created tools for both operations
assert len(tools) == 2
tool_names = {tool.name for tool in tools}
assert "get_user" in tool_names
assert "create_user" in tool_names
async def test_server_tool_execution_fallback_to_http(self, simple_openapi_spec):
"""Test tool execution falls back to HTTP when callables aren't available."""
# Use a mock client that will be used for HTTP fallback
mock_client = httpx.AsyncClient()
server = FastMCPOpenAPI(
openapi_spec=simple_openapi_spec, client=mock_client, name="Test Server"
)
# With new architecture, tools are always created using RequestDirector
async with Client(server) as mcp_client:
tools = await mcp_client.list_tools()
# Should still have tools even without callables
assert len(tools) == 2
# Tools should be OpenAPITool instances using RequestDirector
# We'll just verify they exist and are callable
get_user_tool = next(tool for tool in tools if tool.name == "get_user")
assert get_user_tool is not None
assert get_user_tool.description is not None
def test_server_request_director_initialization(self, simple_openapi_spec):
"""Test that server initializes RequestDirector successfully."""
client = httpx.AsyncClient(base_url="https://api.example.com")
# This should not raise an exception
server = FastMCPOpenAPI(
openapi_spec=simple_openapi_spec, client=client, name="Test Server"
)
# Server should be created successfully
assert server is not None
assert server.name == "Test Server"
# RequestDirector and Spec should be initialized
assert hasattr(server, "_director")
assert hasattr(server, "_spec")
def test_server_with_timeout(self, simple_openapi_spec):
"""Test server initialization with timeout setting."""
client = httpx.AsyncClient(base_url="https://api.example.com")
server = FastMCPOpenAPI(
openapi_spec=simple_openapi_spec,
client=client,
name="Test Server",
timeout=30.0,
)
assert server._timeout == 30.0
def test_server_with_empty_spec(self):
"""Test server with minimal OpenAPI spec."""
minimal_spec = {
"openapi": "3.0.0",
"info": {"title": "Empty API", "version": "1.0.0"},
"paths": {},
}
client = httpx.AsyncClient(base_url="https://api.example.com")
server = FastMCPOpenAPI(
openapi_spec=minimal_spec, client=client, name="Empty Server"
)
assert server.name == "Empty Server"
# Should handle empty paths gracefully
assert hasattr(server, "_director")
assert hasattr(server, "_spec")
async def test_clean_schema_output_no_unused_defs(self):
"""Test that unused schema definitions are removed from tool schemas."""
# Create a spec with unused HTTPValidationError-like definitions
spec_with_unused_defs = {
"openapi": "3.0.0",
"info": {"title": "Test API", "version": "1.0.0"},
"servers": [{"url": "https://api.example.com"}],
"paths": {
"/users": {
"post": {
"operationId": "create_user",
"summary": "Create a new user",
"requestBody": {
"required": True,
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"name": {"type": "string", "title": "Name"},
"active": {
"type": "boolean",
"title": "Active",
},
},
"required": ["name", "active"],
}
}
},
},
"responses": {
"200": {
"description": "User created successfully",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"id": {
"type": "integer",
"title": "Id",
},
"name": {
"type": "string",
"title": "Name",
},
"active": {
"type": "boolean",
"title": "Active",
},
},
"required": ["id", "name", "active"],
"title": "User",
}
}
},
}
},
}
}
},
"components": {
"schemas": {
# This should be removed since it's not referenced
"HTTPValidationError": {
"properties": {
"detail": {
"items": {
"$ref": "#/components/schemas/ValidationError"
},
"title": "Detail",
"type": "array",
}
},
"title": "HTTPValidationError",
"type": "object",
},
"ValidationError": {
"properties": {
"loc": {
"items": {
"anyOf": [{"type": "string"}, {"type": "integer"}]
},
"title": "Location",
"type": "array",
},
"msg": {"title": "Message", "type": "string"},
"type": {"title": "Error Type", "type": "string"},
},
"required": ["loc", "msg", "type"],
"title": "ValidationError",
"type": "object",
},
}
},
}
async with httpx.AsyncClient(base_url="https://api.example.com") as client:
server = FastMCPOpenAPI(
openapi_spec=spec_with_unused_defs, client=client, name="Test Server"
)
async with Client(server) as mcp_client:
tools = await mcp_client.list_tools()
assert len(tools) == 1 # Only the POST operation
tool = tools[0]
# Verify tool has clean schemas without unused $defs
assert tool.name == "create_user"
# Input schema should not have $defs since no references are used
expected_input_schema = {
"type": "object",
"properties": {
"name": {"type": "string", "title": "Name"},
"active": {"type": "boolean", "title": "Active"},
},
"required": ["name", "active"],
}
assert tool.inputSchema == expected_input_schema
# Output schema should not have $defs since no references are used
expected_output_schema = {
"type": "object",
"properties": {
"id": {"type": "integer", "title": "Id"},
"name": {"type": "string", "title": "Name"},
"active": {"type": "boolean", "title": "Active"},
},
"required": ["id", "name", "active"],
"title": "User",
}
assert tool.outputSchema == expected_output_schema