Agile Web Development with Rails, Edition 4

7.2 Iteration B2: Unit Testing 6.3 Playtime

7.1 Iteration B1: Validation and Unit Testing

(1|0) tests, (1|0) assertions, 0 failures, 0 errors.

Traceback:
  /home/rubys/git/awdwr/edition4/checkdepot.rb:62: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)$}i,

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

end

Demonstrate failures.

get /products/new

New product

Back

post /products

product[price] => 0.0

New product

Back

Demonstrate more failures.

get /products/new

New product

Back

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] => /images/utj.jpg
product[price] => wibble

New product

Back

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)$}i,

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

end

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

rake test

/home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:167:in `block in non_options': file not found: test/unit/**/*_test.rb (ArgumentError)

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `map!'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:207:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:52:in `process_args'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:891:in `_run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:884:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:21:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:606:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:326:in `block (2 levels) in autorun'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:27:in `run_once'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:325:in `block in autorun'

/home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:167:in `block in non_options': file not found: test/functional/**/*_test.rb (ArgumentError)

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `map!'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:207:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:52:in `process_args'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:891:in `_run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:884:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:21:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:606:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:326:in `block (2 levels) in autorun'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:27:in `run_once'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:325:in `block in autorun'

Errors running test:units, test:functionals!

Solution is simple, provide valid data.

edit test/functional/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

    put :update, id: @product.to_param, product: @update

    assert_redirected_to product_path(assigns(:product))

end

  # ...

end

Tests now pass again :-)

rake test

/home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:167:in `block in non_options': file not found: test/unit/**/*_test.rb (ArgumentError)

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `map!'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:207:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:52:in `process_args'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:891:in `_run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:884:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:21:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:606:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:326:in `block (2 levels) in autorun'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:27:in `run_once'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:325:in `block in autorun'

/home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:167:in `block in non_options': file not found: test/functional/**/*_test.rb (ArgumentError)

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `map!'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:146:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:207:in `non_options'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:52:in `process_args'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:891:in `_run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/minitest/unit.rb:884:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:21:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:606:in `run'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:326:in `block (2 levels) in autorun'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:27:in `run_once'

	from /home/rubys/.rvm/rubies/ruby-1.9.3-r33476/lib/ruby/1.9.1/test/unit.rb:325:in `block in autorun'

Errors running test:units, test:functionals!

7.2 Iteration B2: Unit Testing 6.3 Playtime

Agile Web Development with Rails, Edition 4

7.1 Iteration B1: Validation and Unit Testing

New product

New product

4 errors prohibited this product from being saved:

New product

New product

1 error prohibited this product from being saved: