Agile Web Development with Rails, Edition 5

8.4 Iteration C4: Functional Testing

Demonstrate use of assert_select to test views.

Verify that the tests still pass.

rails test

Run options: --seed 17310

# Running:

.....E

Error:

StoreControllerTest#test_should_get_index:

ActionView::Template::Error: The asset "ruby.png" is not present in the asset pipeline.

    app/views/store/index.html.erb:7:in `block in _app_views_store_index_html_erb___14457506798847555_56731560'

    app/views/store/index.html.erb:5:in `_app_views_store_index_html_erb___14457506798847555_56731560'

    test/controllers/store_controller_test.rb:5:in `block in <class:StoreControllerTest>'

bin/rails test test/controllers/store_controller_test.rb:4

.....E

Error:

ProductsControllerTest#test_should_get_index:

ActionView::Template::Error: The asset "ruby.png" is not present in the asset pipeline.

    app/views/products/index.html.erb:10:in `block in _app_views_products_index_html_erb___1120784584670067386_54979800'

    app/views/products/index.html.erb:6:in `_app_views_products_index_html_erb___1120784584670067386_54979800'

    test/controllers/products_controller_test.rb:20:in `block in <class:ProductsControllerTest>'

bin/rails test test/controllers/products_controller_test.rb:19

Finished in 0.427001s, 30.4449 runs/s, 72.5994 assertions/s.

13 runs, 31 assertions, 0 failures, 2 errors, 0 skips

Make sure the images exists

touch app/assets/images/ruby.png

Rerun the tests.

rails test

Run options: --seed 15747

# Running:

.............

Finished in 0.351168s, 37.0193 runs/s, 93.9721 assertions/s.

13 runs, 33 assertions, 0 failures, 0 errors, 0 skips

Add tests for layout, product display, and formatting, using counts, string comparisons, and regular expressions.

edit test/controllers/store_controller_test.rb

require 'test_helper'

class StoreControllerTest < ActionDispatch::IntegrationTest

  test "should get index" do

    get store_index_url

    assert_response :success

    assert_select '#columns #side a', minimum: 4

    assert_select '#main .entry', 3

    assert_select 'h3', 'Programming Ruby 1.9'

    assert_select '.price', /\$[,\d]+\.\d\d/

end

end

Review fixure data

edit test/fixtures/products.yml

# Read about fixtures at

# http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html

one:

  title: MyString

  description: MyText

  image_url: lorem.jpg

  price: 9.99

two:

  title: MyString

  description: MyText

  image_url: lorem.jpg

  price: 9.99

ruby:

  title:       Programming Ruby 1.9

  description:

    Ruby is the fastest growing and most exciting dynamic

    language out there.  If you need to get working programs

    delivered fast, you should add Ruby to your toolbox.

  price:       49.50

  image_url:   ruby.png

Show that the tests pass.

rails test:controllers

Run options: --seed 13304

# Running:

........

Finished in 0.300198s, 26.6491 runs/s, 46.6360 assertions/s.

8 runs, 14 assertions, 0 failures, 0 errors, 0 skips