def test_cannot_add_comment_for_non_existent_article(in_memory_repo):
article_id = 101
comment_text = "COVID-19 - what's that?"
username = '******'
# Call the service layer to attempt to add the comment.
with pytest.raises(news_services.NonExistentArticleException):
news_services.add_comment(article_id, comment_text, username, in_memory_repo, 3)
def test_cannot_add_comment_by_unknown_user(in_memory_repo):
article_id = 3
comment_text = 'The loonies are stripping the supermarkets bare!'
username = '******'
# Call the service layer to attempt to add the comment.
with pytest.raises(news_services.UnknownUserException):
news_services.add_comment(article_id, comment_text, username, in_memory_repo, 3)
def test_can_add_comment(in_memory_repo):
article_id = 3
comment_text = 'The loonies are stripping the supermarkets bare!'
username = '******'
# Call the service layer to add the comment.
news_services.add_comment(article_id, comment_text, username, in_memory_repo, 3)
# Retrieve the comments for the article from the repository.
comments_as_dict = news_services.get_comments_for_article(article_id, in_memory_repo)
# Check that the comments include a comment with the new comment text.
assert next(
(dictionary['comment_text'] for dictionary in comments_as_dict if dictionary['comment_text'] == comment_text),
None) is not None
def comment_on_article():
# Obtain the username of the currently logged in user.
username = session['username']
# Create form. The form maintains state, e.g. when this method is called with a HTTP GET request and populates
# the form with an article id, when subsequently called with a HTTP POST request, the article id remains in the
# form.
form = CommentForm()
if form.validate_on_submit():
# Successful POST, i.e. the comment text has passed data validation.
# Extract the article id, representing the commented article, from the form.
article_id = int(form.article_id.data)
# Use the service layer to store the new comment.
services.add_comment(article_id, form.comment.data, username,
repo.repo_instance, form.rating.data)
# Retrieve the article in dict form.
article = services.get_article(article_id, repo.repo_instance)
# Cause the web browser to display the page of all articles that have the same date as the commented article,
# and display all comments, including the new comment.
return redirect(url_for('news_bp.articles', article_input=article_id))
if request.method == 'GET':
# Request is a HTTP GET to display the form.
# Extract the article id, representing the article to comment, from a query parameter of the GET request.
article_id = int(request.args.get('article'))
# Store the article id in the form.
form.article_id.data = article_id
else:
# Request is a HTTP POST where form validation has failed.
# Extract the article id of the article being commented from the form.
article_id = int(form.article_id.data)
# For a GET or an unsuccessful POST, retrieve the article to comment in dict form, and return a Web page that allows
# the user to enter a comment. The generated Web page includes a form object.
article = services.get_article(article_id, repo.repo_instance)
return render_template('news/comment_on_article.html',
title='Edit article',
article=article,
form=form,
handler_url=url_for('news_bp.comment_on_article'),
selected_articles=utilities.get_selected_articles(),
tag_urls=utilities.get_tags_and_urls())