Rails%203%20In%20Action

330 CHAPTER 12 Sending email
As usual, you see what you need to code right now to get your feature on the road to
passing by running bin/cucumber features/waching.feature. You see that it’s actually
this watchers list, indicated by Capybara telling you that it can’t find that element:
Then I should see "user@ticketee.com" within "#watchers"
Unable to find css "#watchers" (Capybara::ElementNotFound)
To get this feature to continue, you’re going to need this element! You can add it to
app/views/tickets/show.html.erb underneath the tag for
by using the code from the following listing.
Listing 12.8 app/views/tickets/show.html.erb
Watchers
You’ve created another div with the id attribute set to watchers, which is the element
that your scenario looks for. In this div you iterate through all the watchers of the
ticket and output a li tag for each of them, which will output a list of watchers when
wrapped in a ul tag.
When you have this element and you run your feature again with bin/cucumber
features/watching_tickets.feature, you see that your feature gets one step closer
to passing by locating user@ticketee.com in the #watchers element, but it now can’t
find the Stop Watching This Ticket button:
Then I should see "user@ticketee.com" within "#watchers"
And I press "Stop watching this ticket"
no button with value or id or text 'Stop watching this ticket'
This button will toggle the watching status of the ticket of the current user, and the
text will differ depending on if the user is or isn’t watching this ticket. In both cases,
however, the button will go to the same action. To get this next scenario to pass, you
add the button to the div#watchers element you just created by using a helper,
changing the first few lines of the element to this:
Watchers
This toggle_watching_button helper will only appear in views for the Tickets-
Controller, and so you should put the method definition in app/helpers/
tickets_helper.rb inside the TicketsHelper module, using the code from the following
listing to define the method.