def test_get_close_db(app): with app.app_context(): db = get_db() assert db is get_db() with pytest.raises(sqlite3.ProgrammingError) as e: db.execute('SELECT 1') assert 'closed' in str(e)
def app(): db_fd, db_path = tempfile.mkstemp() app = create_app({ 'TESTING': True, 'DATABASE': db_path, }) with app.app_context(): init_db() get_db().executescript(_data_sql) yield app os.close(db_fd) os.unlink(db_path)
def delete(id): get_post(id) db = get_db() db.execute('DELETE FROM post WHERE id = ?', (id, )) db.commit() return redirect(url_for('blog.index'))
def register(): """Register a user. @bp.route associates the register url with this function. request.form is a special type of dict mapping submitted form keys and values. """ if request.method == 'POST': username = request.form['username'] password = request.form['password'] db = get_db() error = None if not username: error = 'Username is required.' elif not password: error = 'Password is required.' elif db.execute('SELECT id FROM user WHERE username = ?', (username, )).fetchone() is not None: error = 'User {} is already registered.'.format(username) if error is None: db.execute('INSERT INTO user (username, password) VALUES (?, ?)', (username, generate_password_hash(password))) db.commit() return redirect(url_for('auth.login')) flash(error) return render_template('auth/register.html')
def index(): db = get_db() posts = db.execute('SELECT p.id, title, body, created, author_id, username' ' FROM post p JOIN user u ON p.author_id = u.id' ' ORDER BY created DESC').fetchall() return render_template('blog/index.html', posts=posts)
def login(): if request.method == 'POST': username = request.form['username'] password = request.form['password'] db = get_db() error = None # The user is queried first and stored in a variable for later use. user = db.execute('SELECT * FROM user WHERE username = ?', (username, )).fetchone() if user is None: error = 'Incorrect username.' # check_password_hash() hashes the submitted password in the same way as the stored hash and securely compares them. If they match, the password is valid. elif not check_password_hash(user['password'], password): error = 'Incorrect password.' # session is a dict that stores data across requests. if error is None: session.clear() # When validation succeeds, the user’s id is stored in a new session. # The data is stored in a cookie that is sent to the browser, and the browser then sends it back with subsequent requests. session['user_id'] = user['id'] return redirect(url_for('index')) flash(error) return render_template('auth/login.html')
def login(): """Handle a user login. session is a dict that stores data across requests. This data is stored in a cookie that is sent to the browser. The data is signed securely. """ if request.method == 'POST': username = request.form['username'] password = request.form['password'] db = get_db() error = None user = db.execute('SELECT * FROM user WHERE username = ?', (username, )).fetchone() if user is None: error = 'Incorrect username.' elif not check_password_hash(user['password'], password): error = 'Incorrect password.' if error is None: session.clear() # Now that the ID is stored in the session, it will be # available on subsequent requests. session['user_id'] = user['id'] return redirect(url_for('index')) flash(error) return render_template('auth/login.html')
def load_logged_in_user(): user_id = session.get('user_id') if user_id is None: g.user = None else: g.user = get_db().execute('SELECT * FROM user WHERE id = ?', (user_id, )).fetchone()
def load_logged_in_user(): user_id = session.get('user_id') # If there is no user id, or if the id doesn’t exist, g.user will be None. if user_id is None: g.user = None else: g.user = get_db().execute('SELECT * FROM user WHERE id = ?', (user_id, )).fetchone()
def test_create(client, auth, app): auth.login() assert client.get('/create').status_code == 200 client.post('/create', data={'title': 'created', 'body': ''}) with app.app_context(): db = get_db() count = db.execute('SELECT COUNT(id) FROM post').fetchone()[0] assert count == 2
def test_delete(client, auth, app): auth.login() response = client.post('/1/delete') assert response.headers['Location'] == 'http://localhost/' with app.app_context(): db = get_db() post = db.execute('SELECT * FROM post WHERE id = 1').fetchone() assert post is None
def test_update(client, auth, app): auth.login() assert client.get('/1/update').status_code == 200 client.post('/1/update', data={'title': 'updated', 'body': ''}) with app.app_context(): db = get_db() post = db.execute('SELECT * FROM post WHERE id = 1').fetchone() assert post['title'] == 'updated'
def app(): # Creates and opens a temporary file, returning the file object and the path to it. db_fd, db_path = tempfile.mkstemp() # The app fixture will call the factory and pass test_config to configure the application # and database for testing instead of using your local development configuration. app = create_app({ # Tells Flask that the app is in test mode. 'TESTIING': True, # The DATABASE path is overridden so it points to this temporary path instead of the instance folder. 'DATABASE': db_path, }) with app.app_context(): init_db() get_db().executescript(_data_sql) yield app os.close(db_fd) os.unlink(db_path)
def get_post(id, check_author=True): post = get_db().execute( 'SELECT p.id, title, body, created, author_id, username' ' FROM post p JOIN user u ON p.author_id = u.id' ' WHERE p.id = ?', (id, )).fetchone() if post is None: abort(404, "Post id {0} doesn't exist.".format(id)) if check_author and post['author_id'] != g.user['id']: abort(403) return post
def test_author_required(app, client, auth): # change the post author to another user with app.app_context(): db = get_db() db.execute('UPDATE post SET author_id = 2 WHERE id = 1') db.commit() auth.login() # current user can't modify other user's post assert client.post('/1/update').status_code == 403 assert client.post('/1/delete').status_code == 403 # current user doesn't see edit link assert b'href="/1/update"' not in client.get('/').data
def test_register(client, app): # Check for a rendering error (200 means success) assert client.get('/auth/register').status_code == 200 response = client.post('/auth/register', data={ 'username': '******', 'password': '******' }) # Headers will have a Location header with the login URL on redirect. assert 'http://localhost/auth/login' == response.headers['Location'] # Verify that user is in the database. with app.app_context(): assert get_db().execute( "select * from user where username = '******'", ).fetchone() is not None
def test_register(client, app): # Makes a GET request and returns the Response object returned by Flask. # Test that the page renders successfully, a simple request is made and checked for a 200 OK status_code. # If rendering failed, Flask would return a 500 Internal Server Error code. assert client.get('/auth/register').status_code == 200 # Makes a POST request, converting the data dict into form data. response = client.post( # data contains the body of the response as bytes. # If you expect a certain value to render on the page, check that it’s in data. Bytes must be compared to bytes. '/auth/register', data = {'username' : 'a', 'password' : 'a'} ) # headers will have a Location header with the login URL when the register view redirects to the login view. assert 'http://localhost/auth/login' == response.headers['Location'] with app.app_context(): assert get_db().execute( "select * from user where username = '******'" ).fetchone() is not None
def create(): if request.method == 'POST': title = request.form['title'] body = request.form['body'] error = None if not title: error = 'Title is required.' if error is not None: flash(error) else: db = get_db() db.execute( 'INSERT INTO post (title, body, author_id)' ' VALUES (?, ?, ?)', (title, body, g.user['id'])) db.commit() return redirect(url_for('blog.index')) return render_template('blog/create.html')
def update(id): post = get_post(id) if request.method == 'POST': title = request.form['title'] body = request.form['body'] error = None if not title: error = 'Title is required.' if error is not None: flash(error) else: db = get_db() db.execute('UPDATE post SET title = ?, body = ?' ' WHERE id = ?', (title, body, id)) db.commit() return redirect(url_for('blog.index')) return render_template('blog/update.html', post=post)
def register(): if request.method == 'POST': # Request.form is a special type of dict mapping submitted form keys and values username = request.form['username'] password = request.form['password'] db = get_db() error = None # Validate that username is not empty if not username: error = 'Username is required.' # Validate that username is not empty elif not password: error = 'Password is required.' # Validate that username is not already registered by querying the database and checking if a result is returned. elif db.execute('SELECT id FROM user WHERE username = ?', (username, ) # fetchone() returns one row from the query. ).fetchone() is not None: error = f'User {username} is already registered' if error is None: # If validation succeeds, insert the new user data into the database. # generate_password_hash() is used to securely hash the password, and that hash is stored. db.execute('INSERT INTO user (username, password) VALUES (?, ?)', (username, generate_password_hash(password))) # Since this query modifies data, db.commit() needs to be called afterwards to save the changes. db.commit() # After storing the user, they are redirected to the login page. return redirect(url_for('auth.login')) # If validation fails, the error is shown to the user. # flash() stores messages that can be retrieved when rendering the template. flash(error) # When the user initially navigates to auth/register, or there was a validation error, an HTML page with the registration form should be shown. return render_template('auth/register.html')