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import json
from pathlib import Path
from unittest.mock import Mock, patch
import pytest
from fastmcp.cli.install.cursor import (
cursor_command,
generate_cursor_deeplink,
install_cursor,
open_deeplink,
)
from fastmcp.mcp_config import StdioMCPServer
class TestCursorDeeplinkGeneration:
"""Test cursor deeplink generation functionality."""
def test_generate_deeplink_basic(self):
"""Test basic deeplink generation."""
server_config = StdioMCPServer(
command="uv",
args=["run", "--with", "fastmcp", "fastmcp", "run", "server.py"],
)
deeplink = generate_cursor_deeplink("test-server", server_config)
assert deeplink.startswith("cursor://anysphere.cursor-deeplink/mcp/install?")
assert "name=test-server" in deeplink
assert "config=" in deeplink
# Verify base64 encoding
config_part = deeplink.split("config=")[1]
decoded = base64.urlsafe_b64decode(config_part).decode()
config_data = json.loads(decoded)
assert config_data["command"] == "uv"
assert config_data["args"] == [
"run",
"--with",
"fastmcp",
"fastmcp",
"run",
"server.py",
]
def test_generate_deeplink_with_env_vars(self):
"""Test deeplink generation with environment variables."""
server_config = StdioMCPServer(
command="uv",
args=["run", "--with", "fastmcp", "fastmcp", "run", "server.py"],
env={"API_KEY": "secret123", "DEBUG": "true"},
)
deeplink = generate_cursor_deeplink("my-server", server_config)
# Decode and verify
config_part = deeplink.split("config=")[1]
decoded = base64.urlsafe_b64decode(config_part).decode()
config_data = json.loads(decoded)
assert config_data["env"] == {"API_KEY": "secret123", "DEBUG": "true"}
def test_generate_deeplink_special_characters(self):
"""Test deeplink generation with special characters in server name."""
server_config = StdioMCPServer(
command="uv",
args=["run", "--with", "fastmcp", "fastmcp", "run", "server.py"],
)
# Test with spaces and special chars in name
deeplink = generate_cursor_deeplink("my server (test)", server_config)
assert (
"name=my%20server%20%28test%29" in deeplink
or "name=my server (test)" in deeplink
)
def test_generate_deeplink_empty_config(self):
"""Test deeplink generation with minimal config."""
server_config = StdioMCPServer(command="python", args=["server.py"])
deeplink = generate_cursor_deeplink("minimal", server_config)
config_part = deeplink.split("config=")[1]
decoded = base64.urlsafe_b64decode(config_part).decode()
config_data = json.loads(decoded)
assert config_data["command"] == "python"
assert config_data["args"] == ["server.py"]
assert config_data["env"] == {} # Empty env dict is included
def test_generate_deeplink_complex_args(self):
"""Test deeplink generation with complex arguments."""
server_config = StdioMCPServer(
command="uv",
args=[
"run",
"--with",
"fastmcp",
"--with",
"numpy>=1.20",
"--with-editable",
"/path/to/local/package",
"fastmcp",
"run",
"server.py:CustomServer",
],
)
deeplink = generate_cursor_deeplink("complex-server", server_config)
config_part = deeplink.split("config=")[1]
decoded = base64.urlsafe_b64decode(config_part).decode()
config_data = json.loads(decoded)
assert "--with-editable" in config_data["args"]
assert "server.py:CustomServer" in config_data["args"]
class TestOpenDeeplink:
"""Test deeplink opening functionality."""
@patch("subprocess.run")
def test_open_deeplink_macos(self, mock_run):
"""Test opening deeplink on macOS."""
with patch("sys.platform", "darwin"):
mock_run.return_value = Mock(returncode=0)
result = open_deeplink("cursor://test")
assert result is True
mock_run.assert_called_once_with(
["open", "cursor://test"], check=True, capture_output=True
)
@patch("subprocess.run")
def test_open_deeplink_windows(self, mock_run):
"""Test opening deeplink on Windows."""
with patch("sys.platform", "win32"):
mock_run.return_value = Mock(returncode=0)
result = open_deeplink("cursor://test")
assert result is True
mock_run.assert_called_once_with(
["start", "cursor://test"], shell=True, check=True, capture_output=True
)
@patch("subprocess.run")
def test_open_deeplink_linux(self, mock_run):
"""Test opening deeplink on Linux."""
with patch("sys.platform", "linux"):
mock_run.return_value = Mock(returncode=0)
result = open_deeplink("cursor://test")
assert result is True
mock_run.assert_called_once_with(
["xdg-open", "cursor://test"], check=True, capture_output=True
)
@patch("subprocess.run")
def test_open_deeplink_failure(self, mock_run):
"""Test handling of deeplink opening failure."""
import subprocess
mock_run.side_effect = subprocess.CalledProcessError(1, ["open"])
result = open_deeplink("cursor://test")
assert result is False
@patch("subprocess.run")
def test_open_deeplink_command_not_found(self, mock_run):
"""Test handling when open command is not found."""
mock_run.side_effect = FileNotFoundError()
result = open_deeplink("cursor://test")
assert result is False
class TestInstallCursor:
"""Test cursor installation functionality."""
@patch("fastmcp.cli.install.cursor.open_deeplink")
@patch("fastmcp.cli.install.cursor.print")
def test_install_cursor_success(self, mock_print, mock_open_deeplink):
"""Test successful cursor installation."""
mock_open_deeplink.return_value = True
result = install_cursor(
file=Path("/path/to/server.py"),
server_object=None,
name="test-server",
)
assert result is True
mock_open_deeplink.assert_called_once()
# Verify the deeplink was generated correctly
call_args = mock_open_deeplink.call_args[0][0]
assert call_args.startswith("cursor://anysphere.cursor-deeplink/mcp/install?")
assert "name=test-server" in call_args
@patch("fastmcp.cli.install.cursor.open_deeplink")
@patch("fastmcp.cli.install.cursor.print")
def test_install_cursor_with_packages(self, mock_print, mock_open_deeplink):
"""Test cursor installation with additional packages."""
mock_open_deeplink.return_value = True
result = install_cursor(
file=Path("/path/to/server.py"),
server_object="app",
name="test-server",
with_packages=["numpy", "pandas"],
env_vars={"API_KEY": "test"},
)
assert result is True
call_args = mock_open_deeplink.call_args[0][0]
# Decode the config to verify packages
config_part = call_args.split("config=")[1]
decoded = base64.urlsafe_b64decode(config_part).decode()
config_data = json.loads(decoded)
# Check that all packages are included
assert "--with" in config_data["args"]
assert "numpy" in config_data["args"]
assert "pandas" in config_data["args"]
assert "fastmcp" in config_data["args"]
assert config_data["env"] == {"API_KEY": "test"}
@patch("fastmcp.cli.install.cursor.open_deeplink")
@patch("fastmcp.cli.install.cursor.print")
def test_install_cursor_with_editable(self, mock_print, mock_open_deeplink):
"""Test cursor installation with editable package."""
mock_open_deeplink.return_value = True
result = install_cursor(
file=Path("/path/to/server.py"),
server_object="custom_app",
name="test-server",
with_editable=Path("/local/package"),
)
assert result is True
call_args = mock_open_deeplink.call_args[0][0]
# Decode and verify editable path
config_part = call_args.split("config=")[1]
decoded = base64.urlsafe_b64decode(config_part).decode()
config_data = json.loads(decoded)
assert "--with-editable" in config_data["args"]
# Check for the editable path in a platform-agnostic way
editable_path_str = str(Path("/local/package"))
assert editable_path_str in config_data["args"]
assert "server.py:custom_app" in " ".join(config_data["args"])
@patch("fastmcp.cli.install.cursor.open_deeplink")
@patch("fastmcp.cli.install.cursor.print")
def test_install_cursor_failure(self, mock_print, mock_open_deeplink):
"""Test cursor installation when deeplink fails to open."""
mock_open_deeplink.return_value = False
result = install_cursor(
file=Path("/path/to/server.py"),
server_object=None,
name="test-server",
)
assert result is False
# Verify failure message was printed
mock_print.assert_called()
def test_install_cursor_deduplicate_packages(self):
"""Test that duplicate packages are deduplicated."""
with patch("fastmcp.cli.install.cursor.open_deeplink") as mock_open:
mock_open.return_value = True
install_cursor(
file=Path("/path/to/server.py"),
server_object=None,
name="test-server",
with_packages=["numpy", "fastmcp", "numpy", "pandas", "fastmcp"],
)
call_args = mock_open.call_args[0][0]
config_part = call_args.split("config=")[1]
decoded = base64.urlsafe_b64decode(config_part).decode()
config_data = json.loads(decoded)
# Count occurrences of each package
args_str = " ".join(config_data["args"])
assert args_str.count("numpy") == 1
assert args_str.count("pandas") == 1
# fastmcp appears twice: once as --with fastmcp and once as the command
assert args_str.count("fastmcp") == 2
class TestCursorCommand:
"""Test the cursor CLI command."""
@patch("fastmcp.cli.install.cursor.install_cursor")
@patch("fastmcp.cli.install.cursor.process_common_args")
async def test_cursor_command_basic(self, mock_process_args, mock_install):
"""Test basic cursor command execution."""
mock_process_args.return_value = (
Path("server.py"),
None,
"test-server",
[],
{},
)
mock_install.return_value = True
with patch("sys.exit") as mock_exit:
await cursor_command("server.py")
mock_install.assert_called_once_with(
file=Path("server.py"),
server_object=None,
name="test-server",
with_editable=None,
with_packages=[],
env_vars={},
python_version=None,
with_requirements=None,
project=None,
workspace=None,
)
mock_exit.assert_not_called()
@patch("fastmcp.cli.install.cursor.install_cursor")
@patch("fastmcp.cli.install.cursor.process_common_args")
async def test_cursor_command_failure(self, mock_process_args, mock_install):
"""Test cursor command when installation fails."""
mock_process_args.return_value = (
Path("server.py"),
None,
"test-server",
[],
{},
)
mock_install.return_value = False
with pytest.raises(SystemExit) as exc_info:
await cursor_command("server.py")
assert exc_info.value.code == 1
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