Python flask API Main class 测试失败 "self.assertEqual"

Question

我在 Python 中构建了一个烧瓶 API。当您转到主页时，它将显示一个包含信息的页面。 API 按我的意愿工作，但是我的测试失败了。

All days: http://127.0.0.1:3000/api/v1/resources/today/all
Today by ID: http://127.0.0.1:3000/api/v1/resources/today?id=2
Today by month and day: http://127.0.0.1:3000/api/v1/resources/today?month=05&day=06
 * Debugger is active!
 * Debugger PIN: 790-993-637


Ran 1 test in 0.010s

FAILED (failures=1)


<h1>Today</h1>
        <p>A prototype API for finding out what happened on this day</p> != GET method called

<Click to see difference>

Traceback (most recent call last):
  File "C:\Users\s\PycharmProjects\TodayPython\tests\test.py", line 20, in test_home
    self.assertEqual("GET method called", response.get_data(as_text=True))
AssertionError: 'GET method called' != '<h1>Today</h1>\n        <p>A prototype AP[43 chars]</p>'
- GET method called
+ <h1>Today</h1>
        <p>A prototype API for finding out what happened on this day</p>




<h1>Today</h1>
        <p>A prototype API for finding out what happened on this day</p> != GET method called

<Click to see difference>

Traceback (most recent call last):
  File "C:\Users\s\PycharmProjects\TodayPython\tests\test.py", line 20, in test_home
    self.assertEqual("GET method called", response.get_data(as_text=True))
AssertionError: 'GET method called' != '<h1>Today</h1>\n        <p>A prototype AP[43 chars]</p>'
- GET method called
+ <h1>Today</h1>
        <p>A prototype API for finding out what happened on this day</p>







Ran 1 test in 0.009s

FAILED (failures=1)

Process finished with exit code 1

http://localhost:3000

当您转到 http://127.0.0.1:3000/api/v1/resources/today/all 时，它将显示 json 文件中的所有条目。

Main.py

import datetime
import flask
from flask import jsonify, request, app


class Main:
    app = flask.Flask(__name__)  # Creates the Flask application object
    app.config["DEBUG"] = True

    # Readme
    dt = datetime.datetime.today()
    print("All days: http://127.0.0.1:3000/api/v1/resources/today/all")
    print("Today by ID: http://127.0.0.1:3000/api/v1/resources/today?id=2")
    print("Today by month and day: http://127.0.0.1:3000/api/v1/resources/today?month=" + '{:02d}'.format(
        dt.month) + "&day=" + '{:02d}'.format(dt.day))

    def __init__(self):

        # Test data for our catalog in the form of a list of dictionaries.
        # Jokes from here: https://www.rd.com/list/short-jokes/
        self.todays = [
            {'id': 0,
             'month': '05',
             'day': '04',
             'historic_event': '1670 – A royal charter granted the Hudsons Bay Company a monopoly in the fur trade in Ruperts Land (present-day Canada).',
             'joke': 'What’s the best thing about Switzerland? I don’t know, but the flag is a big plus.'},
            {'id': 1,
             'month': '05',
             'day': '05',
             'historic_event': '2010 – Mass protests in Greece erupt in response to austerity measures imposed by the government as a result of the Greek government-debt crisis.',
             'joke': 'I invented a new word! Plagiarism!'},
            {'id': 2,
             'month': '05',
             'day': '06',
             'historic_event': '2002– Founding of SpaceX.',
             'joke': 'Did you hear about the mathematician who’s afraid of negative numbers? He’ll stop at nothing to avoid them.'},
            {'id': 3,
             'month': '05',
             'day': '07',
             'historic_event': '2000 - Vladimir Putin is inaugurated as president of Russia.',
             'joke': 'How did the hacker escape from the police? He ransomware.'},
        ]

        @self.app.route('/', methods=['GET'])
        def __home():
            return self.home()

        @self.app.route('/api/v1/resources/today/all', methods=['GET'])
        def __api_all():
            return self.api_all()

        @self.app.route('/api/v1/resources/today', methods=['GET'])
        def __api_id():
            return self.api_id()

        self.app.run(host="localhost", port=3000, debug=True)

    @staticmethod
    def home():
        return '''<h1>Today</h1>
        <p>A prototype API for finding out what happened on this day</p>'''

    def api_all(self):
        return jsonify(self.todays)

    def api_id(self):

        # Create an empty list for our results
        results = []

        # Check if an ID was provided as part of the URL.
        # If ID is provided, assign it to a variable.
        # If no ID is provided, display an error in the browser.
        if 'id' in request.args:
            id = int(request.args['id'])

            # Loop through the data and match results that fit the requested ID.
            # IDs are unique, but other fields might return many results
            for today in self.todays:
                if today['id'] == id:
                    results.append(today)
        else:
            # Month and day search
            if 'month' in request.args and 'day' in request.args:
                month = str(request.args['month'])
                day = str(request.args['day'])

                for today in self.todays:
                    if today['month'] == month and today['day'] == day:
                        results.append(today)

                result_length = len(results)
                if result_length == 0:
                    return "Error: Not yet implemented or not found"
            else:
                return "Error: No id, month or day field provided. Please specify."



        # Use the jsonify function from Flask to convert our list of
        # Python dictionaries to the JSON format.
        return jsonify(results)


Main();

tests/test.py

import unittest

from Main import Main


class Test(unittest.TestCase):
    def setUp(self):
        self.ctx = Main.app.app_context()
        self.ctx.push()
        self.client = Main.app.test_client()

    def tearDown(self):
        self.ctx.pop()

    def test_home(self):
        home_str = '''<h1>Today</h1>
        <p>A prototype API for finding out what happened on this day</p>'''
        response = self.client.get("/", data={"content": home_str})
        self.assertEqual(response.status_code, 200)
        self.assertEqual("GET method called", response.get_data(as_text=True))


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

Answer 1

在您的 test_home() 函数中，您需要使用 home_str 断言 response.get_data()。而不是 "GET method called".

response.get_data returns 请求正文的字符串表示。

所以你的最后一行应该是这样的：

self.assertEqual(home_str, response.get_data(as_text=True))