import os

import subprocess

import sys

from unittest.mock import patch

import fastapi.cli

import pytest

def test_fastapi_cli():

result = subprocess.run(

[

sys.executable,

"-m",

"coverage",

"run",

"-m",

"fastapi",

"dev",

"non_existent_file.py",

],

capture_output=True,

encoding="utf-8",

env={**os.environ, "PYTHONIOENCODING": "utf-8"},

)

assert result.returncode == 1, result.stdout

assert "Path does not exist non_existent_file.py" in result.stdout

def test_fastapi_cli_not_installed():

with patch.object(fastapi.cli, "cli_main", None):

with pytest.raises(RuntimeError) as exc_info:

fastapi.cli.main()

assert "To use the fastapi command, please install" in str(exc_info.value)