14.3 Functional Testing of Controllers 14.1 Tests Baked Right In
cat test/unit/product_test.rb
require 'test_helper'
class ProductTest < ActiveSupport::TestCase
# Replace this with your real tests.
test "the truth" do
assert true
end
end
ruby -Itest test/unit/product_test.rb
Loaded suite test/unit/product_test
Started
E
Finished in 0.008811 seconds.
1) Error:
test_the_truth(ProductTest):
ActiveRecord::StatementInvalid: SQLite3::SQLException: no such table: line_items: DELETE FROM "line_items" WHERE 1=1
1 tests, 0 assertions, 0 failures, 1 errors
rake db:test:prepare
(in /home/rubys/git/awdwr/work-188/depot)
ruby -Itest test/unit/product_test.rb
Loaded suite test/unit/product_test
Started
.
Finished in 0.024739 seconds.
1 tests, 1 assertions, 0 failures, 0 errors
rake test:units
(in /home/rubys/git/awdwr/work-188/depot)
Loaded suite /home/rubys/.rvm/gems/ruby-1.8.8-r28862/gems/rake-0.8.7/lib/rake/rake_test_loader
Started
....
Finished in 0.025644 seconds.
4 tests, 4 assertions, 0 failures, 0 errors
edit test/unit/product_test.rb
require 'test_helper'
class ProductTest < ActiveSupport::TestCase
fixtures :products
# Replace this with your real tests.
test "the truth" do
assert true
end
test "invalid with empty attributes" do
product = Product.new
assert !product.valid?
assert product.errors[:title].any?
assert product.errors[:description].any?
assert product.errors[:price].any?
assert product.errors[:image_url].any?
end
test "positive price" do
product = Product.new(:title => "My Book Title",
:description => "yyy",
:image_url => "zzz.jpg")
product.price = -1
assert !product.valid?
assert_equal "should be at least 0.01", product.errors[:price].join
product.price = 0
assert !product.valid?
assert_equal "should be at least 0.01", product.errors[:price].join
product.price = 1
assert product.valid?
end
test "image url" do
ok = %w{ fred.gif fred.jpg fred.png FRED.JPG FRED.Jpg
http://a.b.c/x/y/z/fred.gif }
bad = %w{ fred.doc fred.gif/more fred.gif.more }
ok.each do |name|
product = Product.new(:title => "My Book Title",
:description => "yyy",
:price => 1,
:image_url => name)
assert product.valid?, product.errors.full_messages.join
end
bad.each do |name|
product = Product.new(:title => "My Book Title",
:description => "yyy",
:price => 1,
:image_url => name)
assert !product.valid?, "saving #{name}"
end
end
test "unique title" do
product = Product.new(:title => products(:ruby_book).title,
:description => "yyy",
:price => 1,
:image_url => "fred.gif")
assert !product.save
assert_equal "has already been taken", product.errors[:title].join
end
test "unique title1" do
product = Product.new(:title => products(:ruby_book).title,
:description => "yyy",
:price => 1,
:image_url => "fred.gif")
assert !product.save
assert_equal I18n.translate('activerecord.errors.messages.taken'),
product.errors[:title].join
end
end
edit test/fixtures/products.yml
ruby_book:
title: Programming Ruby
description: Dummy description
price: 1234
image_url: ruby.png
rails_book:
title: Agile Web Development with Rails
description: Dummy description
price: 2345
image_url: rails.png
rake test:units
(in /home/rubys/git/awdwr/work-188/depot)
Loaded suite /home/rubys/.rvm/gems/ruby-1.8.8-r28862/gems/rake-0.8.7/lib/rake/rake_test_loader
Started
.........
Finished in 0.086922 seconds.
9 tests, 27 assertions, 0 failures, 0 errors
edit test/unit/cart_test.rb
require 'test_helper'
class CartTest < ActiveSupport::TestCase
fixtures :products
test "add unique products" do
cart = Cart.new
rails_book = products(:rails_book)
ruby_book = products(:ruby_book)
cart.add_product rails_book
cart.add_product ruby_book
assert_equal 2, cart.items.size
assert_equal rails_book.price + ruby_book.price, cart.total_price
end
test "add_duplicate_product" do
cart = Cart.new
rails_book = products(:rails_book)
cart.add_product rails_book
cart.add_product rails_book
assert_equal 2*rails_book.price, cart.total_price
assert_equal 1, cart.items.size
assert_equal 2, cart.items[0].quantity
end
end
ruby -I test test/unit/cart_test.rb
Loaded suite test/unit/cart_test
Started
..
Finished in 0.047012 seconds.
2 tests, 5 assertions, 0 failures, 0 errors
edit test/unit/cart_test1.rb
require 'test_helper'
class CartTest < ActiveSupport::TestCase
fixtures :products
def setup
@cart = Cart.new
@rails = products(:rails_book)
@ruby = products(:ruby_book)
end
test "add unique products" do
@cart.add_product @rails
@cart.add_product @ruby
assert_equal 2, @cart.items.size
assert_equal @rails.price + @ruby.price, @cart.total_price
end
test "add duplicate product" do
@cart.add_product @rails
@cart.add_product @rails
assert_equal 2*@rails.price, @cart.total_price
assert_equal 1, @cart.items.size
assert_equal 2, @cart.items[0].quantity
end
end
ruby -I test test/unit/cart_test1.rb
Loaded suite test/unit/cart_test1
Started
..
Finished in 0.047237 seconds.
2 tests, 5 assertions, 0 failures, 0 errors
14.3 Functional Testing of Controllers 14.1 Tests Baked Right In