Rails%203%20In%20Action

292 CHAPTER 11 Tagging
11.2 Adding more tags
The tags for a ticket can change
throughout the ticket’s life; new tags
can be added and old ones can be
deleted. Let’s look at how you can add
more tags to a ticket after it’s been created
through the comments form.
Underneath the comment form on a
ticket’s page, add the same Tags field
that you previously used to add tags to
your ticket on the new ticket page. One
thing you have to keep in mind here is
that if someone enters a tag that’s
already been entered, you don’t want it
to show up.
You’ve got two scenarios to implement
then: the first is a vanilla addition
of tags to a ticket through a comment,
and the second is a scenario ensuring
Figure 11.3 Comment form with tags
that duplicate tags do not appear. Let’s implement this function one scenario at a
time. When you’re done, you’ll end up with the pretty picture shown in figure 11.3.
11.2.1 Adding tags through a comment
To test that users can add tags when they’re creating a comment, you add a new scenario
to the features/creating_comments.feature feature that looks like this listing:
Listing 11.2 features/creating_comments.feature
Scenario: Adding a tag to a ticket
When I follow "Change a ticket's state"
Then I should not see "bug" within "#ticket #tags"
And I fill in "Text" with "Adding the bug tag"
And I fill in "Tags" with "bug"
And I press "Create Comment"
Then I should see "Comment has been created"
Then I should see "bug" within "#ticket #tags"
First, you make sure you don’t see this tag within #ticket #tags, to ensure you don’t
have a false positive. Next, you fill in the text for the comment so it’s valid, add the
word “bug” to the Tags field, and click the Create Comment button. Finally, you
ensure that the comment has been created and that the bug tag you entered into the
comment form now appears in #ticket #tags.
When you run this scenario using bin/cucumber features/creating_comments
.feature:47, it will fail because there is no Tags field on the ticket’s page yet: