在Flask應用程序的單元測試期間無法創建測試客戶端

Question

我試圖找出如何對一個從session['user_id']抓取變量值的函數運行測試。 這是具體的測試方法：

def test_myProfile_page(self):
    with app.test_client() as c:
        with c.session_transaction() as sess:
            sess['user_id'] = '1'

    rv = c.get('/myProfile')
    assert 'My Profile' in rv.data

這是正在測試的視圖：

@app.route('/myProfile')
def myProfile():
    if not session.get('logged_in'):
        return render_template('login.html')
    else:
        profileID = session['user_id']
        userList = users.query.filter_by(id=profileID).all()
        flash('My Profile')
        return render_template('myProfile.html', userList=userList)

這是整個測試文件：

import os
import app
import unittest
import tempfile

class AppTestCase(unittest.TestCase):
    def setUp(self):
        self.db_fd, app.app.config['DATABASE'] = tempfile.mkstemp()
        app.app.config['TESTING'] = True
        self.app = app.app.test_client()

    def tearDown(self):
        os.close(self.db_fd)
        os.unlink(app.app.config['DATABASE'])

    def test_profile_page(self):
        rv = self.app.get('/profile1')
        assert 'Profile' in rv.data

    def login(self, username, password):
        return self.app.post('/login', data=dict(
            username=username,
            password=password
        ), follow_redirects=True)

    def logout(self):
        return self.app.get('/logout', follow_redirects=True)

    def test_login_logout(self):
        rv = self.login('Alex', 'passwordAlex')
        assert 'Welcome' in rv.data
        rv = self.logout()
        assert 'You have been logged out' in rv.data
        rv = self.login('Alex', 'noPassword')
        assert 'You have to Login' in rv.data
        rv = self.login('WrongName', 'passwordAlex')
        assert 'You have to Login' in rv.data

    def test_myProfile_page(self):
        with app.test_client() as c:
            with c.session_transaction() as sess:
                sess['user_id'] = '1'

        rv = c.get('/myProfile')
        assert 'My Profile' in rv.data

if __name__ == '__main__':
    unittest.main()

運行測試時顯示以下錯誤：

ERROR: test_myProfile_page (__main__.AppTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "app_tests.py", line 46, in test_myProfile_page
    with app.test_client() as c:
AttributeError: 'module' object has no attribute 'test_client'

----------------------------------------------------------------------
Ran 3 tests in 0.165s


FAILED (errors=1)

為什么我會收到此錯誤，如何解決？

Answer 1

您已經在setUp方法中創建了一個測試客戶端： self.app 。 app是您在頂部導入的模塊，您需要在app.app上引用app對象才能訪問Flask應用。 既然您已經創建了一個測試客戶端，您可以將測試更改為：

def test_myProfile_page(self):
    with self.app as c:
        with self.app.session_transaction() as sess:
            sess['user_id'] = 1
            sess['logged_in'] = True
            rv = self.app.get('myProfile')
    assert 'My Profile' in rv.data