Python 运行时错误：在应用程序上下文之外工作
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RuntimeError: working outside of application context
提问by guri
app.py
应用程序
from flask import Flask, render_template, request,jsonify,json,g
import mysql.connector
app = Flask(__name__)
**class TestMySQL():**
@app.before_request
def before_request():
try:
g.db = mysql.connector.connect(user='root', password='root', database='mysql')
except mysql.connector.errors.Error as err:
resp = jsonify({'status': 500, 'error': "Error:{}".format(err)})
resp.status_code = 500
return resp
@app.route('/')
def input_info(self):
try:
cursor = g.db.cursor()
cursor.execute ('CREATE TABLE IF NOT EXISTS testmysql (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, name VARCHAR(40) NOT NULL, \
email VARCHAR(40) NOT NULL UNIQUE)')
cursor.close()
test.py
测试文件
from app import *
class Test(unittest.TestCase):
def test_connection1(self):
with patch('__main__.mysql.connector.connect') as mock_mysql_connector_connect:
object=TestMySQL()
object.before_request() """Runtime error on calling this"
I am importing appinto test.pyfor unit testing.On calling 'before_request' function into test.py ,it is throwing RuntimeError: working outside of application context same is happening on calling 'input_info()'
我正在将应用程序导入test.py以进行单元测试。在将“ before_request”函数调用到 test.py 时，它抛出 RuntimeError：在应用程序上下文之外工作同样发生在调用“ input_info()”时
采纳答案by brenns10
Flask has an Application Context, and it seems like you'll need to do something like:
Flask 有一个Application Context，似乎您需要执行以下操作：
def test_connection(self):
with app.app_context():
#test code
You can probably also shove the app.app_context()call into a test setup method as well. Hope this helps.
您也可以将app.app_context()调用推送到测试设置方法中。希望这可以帮助。
回答by Paddy Alton
I followed @brenns10 's answer when I ran into a similar problem when using pytest.
当我在使用pytest.
I followed the suggestion of putting it into test setup, this works:
我遵循了将其放入测试设置的建议，这是有效的：
import pytest
from src.app import app
@pytest.fixture
def app_context():
with app.app_context():
yield
def some_test(app_context):
<test code that needs the app context>
