7.2 Iteration B2: Unit Testing 6.3 Playtime

7 (tests|runs), 13 assertions, 0 failures, 0 errors.
<0> expected to be
>=
<1>.

Traceback:
  /home/rubys/git/awdwr/edition4/checkdepot.rb:38:in `assert_test_summary'
  /home/rubys/git/awdwr/edition4/checkdepot.rb:120:in `block in <class:DepotTest>'

Augment the model with a few vailidity checks.

Various validations: required, numeric, positive, and unique

edit app/models/product.rb

class Product < ActiveRecord::Base

  validates :title, :description, :image_url, presence: true

  validates :price, numericality: {greater_than_or_equal_to: 0.01}

  validates :title, uniqueness: true

  validates :image_url, allow_blank: true, format: {

    with:    %r{\.(gif|jpg|png)\Z}i,

    message: 'must be a URL for GIF, JPG or PNG image.'

  }

end

Demonstrate failures.

get /products/new

post /products

• product[price] => 0.0

Demonstrate more failures.

get /products/new

post /products

• product[title] => Pragmatic Unit Testing
• product[description] => A true masterwork. Comparable to Kafka at his funniest, or Marx during his slapstick period. Move over, Tolstoy, there's a new funster in town.
• product[image_url] => utj.jpg
• product[price] => wibble

edit app/models/product.rb

class Product < ActiveRecord::Base

  validates :title, :description, :image_url, presence: true

  validates :price, numericality: {greater_than_or_equal_to: 0.01}

  validates :title, uniqueness: true

  validates :image_url, allow_blank: true, format: {

    with:    %r{\.(gif|jpg|png)\Z}i,

    message: 'must be a URL for GIF, JPG or PNG image.'

  }

end

Now run the tests... and watch them fail :-(

rake test

rake aborted!

ActiveRecord::PendingMigrationError: Migrations are pending; run 'bin/rake db:migrate RAILS_ENV=test' to resolve this issue.

/home/rubys/git/rails/activerecord/lib/active_record/migration.rb:383:in `check_pending!'

/home/rubys/git/awdwr/edition4/work-225-40/depot/test/test_helper.rb:6:in `<class:TestCase>'

/home/rubys/git/awdwr/edition4/work-225-40/depot/test/test_helper.rb:5:in `<top (required)>'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `block in require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:214:in `load_dependency'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/awdwr/edition4/work-225-40/depot/test/helpers/products_helper_test.rb:1:in `<top (required)>'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `block in require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:214:in `load_dependency'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:73:in `block (3 levels) in define'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:73:in `each'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:73:in `block (2 levels) in define'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:72:in `each'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:72:in `block in define'

/home/rubys/git/rails/railties/lib/rails/test_unit/testing.rake:61:in `block in <top (required)>'

/home/rubys/.rvm/gems/ruby-2.2.5/gems/rake-11.2.1/exe/rake:27:in `<top (required)>'

/home/rubys/.rvm/gems/ruby-2.2.5/bin/ruby_executable_hooks:15:in `eval'

/home/rubys/.rvm/gems/ruby-2.2.5/bin/ruby_executable_hooks:15:in `<main>'

Tasks: TOP => test:run => test:units

(See full trace by running task with --trace)

Run options: --seed 49884

# Running tests:

Finished tests in 0.000828s, 0.0000 tests/s, 0.0000 assertions/s.

0 tests, 0 assertions, 0 failures, 0 errors, 0 skips

Solution is simple, provide valid data.

edit test/controllers/products_controller_test.rb

require 'test_helper'

class ProductsControllerTest < ActionController::TestCase

  setup do

    @product = products(:one)

    @update = {

      title:       'Lorem Ipsum',

      description: 'Wibbles are fun!',

      image_url:   'lorem.jpg',

      price:       19.95

    }

  end

  test "should get index" do

    get :index

    assert_response :success

    assert_not_nil assigns(:products)

  end

  test "should get new" do

    get :new

    assert_response :success

  end

  test "should create product" do

    assert_difference('Product.count') do

      post :create, product: @update

    end

    assert_redirected_to product_path(assigns(:product))

  end

  # ...

  test "should update product" do

    patch :update, id: @product, product: @update

    assert_redirected_to product_path(assigns(:product))

  end

  # ...

end

Tests now pass again :-)

rake test

rake aborted!

ActiveRecord::PendingMigrationError: Migrations are pending; run 'bin/rake db:migrate RAILS_ENV=test' to resolve this issue.

/home/rubys/git/rails/activerecord/lib/active_record/migration.rb:383:in `check_pending!'

/home/rubys/git/awdwr/edition4/work-225-40/depot/test/test_helper.rb:6:in `<class:TestCase>'

/home/rubys/git/awdwr/edition4/work-225-40/depot/test/test_helper.rb:5:in `<top (required)>'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `block in require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:214:in `load_dependency'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/awdwr/edition4/work-225-40/depot/test/helpers/products_helper_test.rb:1:in `<top (required)>'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `block in require'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:214:in `load_dependency'

/home/rubys/git/rails/activesupport/lib/active_support/dependencies.rb:229:in `require'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:73:in `block (3 levels) in define'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:73:in `each'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:73:in `block (2 levels) in define'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:72:in `each'

/home/rubys/git/rails/railties/lib/rails/test_unit/sub_test_task.rb:72:in `block in define'

/home/rubys/git/rails/railties/lib/rails/test_unit/testing.rake:61:in `block in <top (required)>'

/home/rubys/.rvm/gems/ruby-2.2.5/gems/rake-11.2.1/exe/rake:27:in `<top (required)>'

/home/rubys/.rvm/gems/ruby-2.2.5/bin/ruby_executable_hooks:15:in `eval'

/home/rubys/.rvm/gems/ruby-2.2.5/bin/ruby_executable_hooks:15:in `<main>'

Tasks: TOP => test:run => test:units

(See full trace by running task with --trace)

Run options: --seed 38356

# Running tests:

Finished tests in 0.000839s, 0.0000 tests/s, 0.0000 assertions/s.

0 tests, 0 assertions, 0 failures, 0 errors, 0 skips

7.2 Iteration B2: Unit Testing 6.3 Playtime