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• redirect(external url)

examples/flask/redirect/app.py

from flask import Flask, redirect

app = Flask(__name__)

@app.route('/')
def index():
    return '<a href="/cm">Go to Code Maven</a>'

@app.route('/cm')
def cm():
    return redirect('https://code-maven.com/')

examples/flask/redirect/test_app.py

import app

def test_app():
    web = app.app.test_client()

    rv = web.get('/')
    assert rv.status == '200 OK'
    assert rv.data == b'<a href="/cm">Go to Code Maven</a>'


    rv = web.get('/cm')
    assert rv.status == '302 FOUND'
    assert rv.headers['Location'] == 'https://code-maven.com/'
    assert b'<p>You should be redirected automatically to target URL: <a href="https://code-maven.com/">https://code-maven.com/</a>' in rv.data