Associating a Message with a User
We haven’t defined our user association on the Message model yet. Let’s do that:
| rails/08/app/models/message.rb | |
| | class Message < ActiveRecord::Base |
| | belongs_to :user |
| | attr_accessible :content, :user_id |
| | end |
Cucumber now outputs this:
| | Feature: See Messages |
| | |
| | Scenario: See another user's messages |
| | Given there is a User |
| | And the User has posted the message "this is my message" |
| | When I visit the page for the User |
| | Undefined step: "I visit the page for the User" (Cucumber::Undefined) |
| | features/see_messages.feature:5 |
| | Then I should see "this is my message" |
| | Undefined step: "I should see "this is my message"" (Cucumber::Undefined) |
| | features/see_messages.feature:6 |
| | |
| | 1 scenario (1 undefined) |
| | 4 steps (2 undefined, 2 passed) |
| | 0m0.445s |
| | |
| | You can implement step definitions for undefined steps with these snippets: |
| | When /^I visit the page for the User$/ do |
| | pending # express the regexp above with the code you wish you had |
| | end |
| | |
| | Then /^I should see "(.*?)"$/ do |arg1| |
| | pending # express the regexp above with the code you wish you had |
| | end |
Great! Our two Given steps are passing. Notice how nicely our Cucumber steps have driven us to create just the right code in the models. Now we have an undefined step that we need to implement. This will be the first time we actually interact with the web interface of our application. We will do this with Capybara, which is installed as part of Cucumber-Rails. Capybara will be fully explained in Chapter 15, Using Capybara to Test Ajax Web Applications. For now, let’s just use the visit(path) method that Capybara gives us. Add another step definition to features/step_definitions/user_steps.rb:
| rails/09/features/step_definitions/user_steps.rb | |
| | When /^I visit the page for the User$/ do |
| | User.count.should == 1 |
| | visit(user_path(User.first)) |
| | end |
Here we are using the Rails route user_path, which takes a User instance. We’re just passing User.first since we know there is only one user in our database. Running Cucumber again now tells us that Rails doesn’t know about user_path:
| | Feature: See Messages |
| | |
| | Scenario: See another user's messages |
| | Given there is a User |
| | And the User has posted the message "this is my message" |
| | When I visit the page for the User |
| | undefined method ‘user_path’ for |
| | #<Cucumber::Rails::World:0x63756b65> (NoMethodError) |
| | ./features/step_definitions/user_steps.rb:15 |
| | features/see_messages.feature:5 |
| | Then I should see "this is my message" |
| | Undefined step: "I should see "this is my message"" (Cucumber::Undefined) |
| | features/see_messages.feature:6 |
| | |
| | Failing Scenarios: |
| | cucumber features/see_messages.feature:2 |
| | |
| | 1 scenario (1 failed) |
| | 4 steps (1 failed, 1 undefined, 2 passed) |
| | 0m0.348s |
| | |
| | You can implement step definitions for undefined steps with these snippets: |
| | Then /^I should see "(.*?)"$/ do |arg1| |
| | pending # express the regexp above with the code you wish you had |
| | end |
That’s not surprising—we haven’t created a UsersController yet, and we haven’t mapped it in our Rails application’s routes.