Files
crewAI/tests/adapters/mcp_adapter_test.py
Lucas Gomide 31b3dd2b94 feat: Add ToolCollection class for named tool access (#339)
This change allows accessing tools by name (tools["tool_name"]) in addition to
index (tools[0]), making it more intuitive and convenient to work with multiple
tools without needing to remember their position in the list
2025-06-20 09:27:10 -04:00

106 lines
2.8 KiB
Python

from textwrap import dedent
import pytest
from mcp import StdioServerParameters
from crewai_tools import MCPServerAdapter
from crewai_tools.adapters.tool_collection import ToolCollection
@pytest.fixture
def echo_server_script():
return dedent(
'''
from mcp.server.fastmcp import FastMCP
mcp = FastMCP("Echo Server")
@mcp.tool()
def echo_tool(text: str) -> str:
"""Echo the input text"""
return f"Echo: {text}"
mcp.run()
'''
)
@pytest.fixture
def echo_server_sse_script():
return dedent(
'''
from mcp.server.fastmcp import FastMCP
mcp = FastMCP("Echo Server", host="127.0.0.1", port=8000)
@mcp.tool()
def echo_tool(text: str) -> str:
"""Echo the input text"""
return f"Echo: {text}"
mcp.run("sse")
'''
)
@pytest.fixture
def echo_sse_server(echo_server_sse_script):
import subprocess
import time
# Start the SSE server process with its own process group
process = subprocess.Popen(
["python", "-c", echo_server_sse_script],
)
# Give the server a moment to start up
time.sleep(1)
try:
yield {"url": "http://127.0.0.1:8000/sse"}
finally:
# Clean up the process when test is done
process.kill()
process.wait()
def test_context_manager_syntax(echo_server_script):
serverparams = StdioServerParameters(
command="uv", args=["run", "python", "-c", echo_server_script]
)
with MCPServerAdapter(serverparams) as tools:
assert isinstance(tools, ToolCollection)
assert len(tools) == 1
assert tools[0].name == "echo_tool"
assert tools[0].run(text="hello") == "Echo: hello"
def test_context_manager_syntax_sse(echo_sse_server):
sse_serverparams = echo_sse_server
with MCPServerAdapter(sse_serverparams) as tools:
assert len(tools) == 1
assert tools[0].name == "echo_tool"
assert tools[0].run(text="hello") == "Echo: hello"
def test_try_finally_syntax(echo_server_script):
serverparams = StdioServerParameters(
command="uv", args=["run", "python", "-c", echo_server_script]
)
try:
mcp_server_adapter = MCPServerAdapter(serverparams)
tools = mcp_server_adapter.tools
assert len(tools) == 1
assert tools[0].name == "echo_tool"
assert tools[0].run(text="hello") == "Echo: hello"
finally:
mcp_server_adapter.stop()
def test_try_finally_syntax_sse(echo_sse_server):
sse_serverparams = echo_sse_server
mcp_server_adapter = MCPServerAdapter(sse_serverparams)
try:
tools = mcp_server_adapter.tools
assert len(tools) == 1
assert tools[0].name == "echo_tool"
assert tools[0].run(text="hello") == "Echo: hello"
finally:
mcp_server_adapter.stop()