簡単なサンプルを作ってみる (2)
ええと、以下なテーブルなのですが
class CreateCustomers < ActiveRecord::Migration
def self.up
create_table :customers do |t|
t.string :name
t.integer :age
t.timestamps
end
end
def self.down
drop_table :customers
end
endで、name な属性は
validates_presence_of :name
ってことで入力必須らしい。ので試験としては以下なのかな。
require 'spec_helper'
describe Customer do
before(:each) do
@customer = Customer.new
end
it "@customer should not be valid because name property is null" do
@customer.should_not be_valid
end
endmodel はまっさら状態で試験実行。
$ bundle exec rspec spec/ /home/hoge/Documents/rails_proj/api_sample/spec/models/customer_spec.rb:1:in `require': no such file to load -- spec_helper (LoadError)
げ。何ソレ。ココによると rails generate rspec:install しろとある。
$ rails generate rspec:install
create .rspec
exist spec
create spec/spec_helper.rb
$なるほど。ちなみにググり中に自分ブログの数年前にエントリがでてきてびっくり。しかも全然役に立たんかった。
そりゃ良いのですが試験リトライ。
$ bundle exec rspec spec/
F
Failures:
1) Customer @customer should not be valid because name property is null
Failure/Error: @customer = Customer.new
ActiveRecord::StatementInvalid:
Could not find table 'customers'
# ./spec/models/customer_spec.rb:5:in `new'
# ./spec/models/customer_spec.rb:5:in `block (2 levels) in <top (required)>'
Finished in 1.03 seconds
1 example, 1 failure
Failed examples:
rspec ./spec/models/customer_spec.rb:8 # Customer @customer should not be valid because name property is null
$あ、db 作ってないや。ええと以下かな。
$ bundle exec rake db:migrate == CreateCustomers: migrating ================================================ -- create_table(:customers) -> 0.0017s == CreateCustomers: migrated (0.0018s) ======================================= $ bundle exec rake db:test:prepare $ ls db development.sqlite3 migrate schema.rb seeds.rb test.sqlite3 $
で、もっかい rspec をナニ。
$ bundle exec rspec spec/
F
Failures:
1) Customer @customer should not be valid because name property is null
Failure/Error: @customer.should_not be_valid
expected valid? to return false, got true
# ./spec/models/customer_spec.rb:9:in `block (2 levels) in <top (required)>'
Finished in 0.21798 seconds
1 example, 1 failure
Failed examples:
rspec ./spec/models/customer_spec.rb:8 # Customer @customer should not be valid because name property is null
$では、app/models/customer.rb に以下を盛り込んで
class Customer < ActiveRecord::Base validates_presence_of :name end
再度試験実行。
$ bundle exec rspec spec/ . Finished in 0.61442 seconds 1 example, 0 failures $
無事グリーンですね。あるいは試験はそのまんまで app/models/customer.rb に以下を盛り込んだらどうなるかな。
class Customer < ActiveRecord::Base validates_presence_of :name validates_numericality_of :age, :greater_than => 0 end
普通に 0 で初期化されるのだろうか。試験パスしてるのでそうらしい。あ、違うや。
以下かな?
require 'spec_helper'
describe Customer do
before(:each) do
@customer = Customer.new
@customer2 = Customer.new(:name=>"hoge")
end
it "@customer should not be valid because name property is null" do
@customer.should_not be_valid
@customer2.should_not be_valid
end
endあ、書き方違うや。以下か。
require 'spec_helper'
describe Customer do
before(:each) do
@customer = Customer.new
@customer2 = Customer.new(:name=>"hoge")
end
it "@customer should not be valid because name property is null" do
@customer.should_not be_valid
end
it "@customer2 should not be valid because age property is less than 0" do
@customer2.should_not be_valid
end
end試験にはパスしましたが、値は何なのだろう。
$ bundle exec rspec spec/ .. Finished in 0.34626 seconds 2 examples, 0 failures $
ちなみに valid なナニも確認しておきたいのですが、ということで以下。
$ rails console --sandbox Loading development environment in sandbox (Rails 3.0.9) Any modifications you make will be rolled back on exit ruby-1.9.2-p180 :001 > Customer.new.valid? => false ruby-1.9.2-p180 :002 > Customer.new(:name=>'fuga').valid? => false ruby-1.9.2-p180 :003 > customer = Customer.new => #<Customer id: nil, name: nil, age: nil, created_at: nil, updated_at: nil> ruby-1.9.2-p180 :004 >
およよ。あるいは
ruby-1.9.2-p180 :004 > Customer.new(:name=>'fuga', :age=>0).valid? => false ruby-1.9.2-p180 :005 > Customer.new(:name=>'fuga', :age=>1).valid? => true ruby-1.9.2-p180 :006 >
ありゃ。1 以上じゃないと駄目なのか。なので試験を以下にして
require 'spec_helper'
describe Customer do
before(:each) do
@customer = Customer.new
@customer2 = Customer.new(:name=>"hoge")
@customer_normal = Customer.new(:name=>"fuga", :age=>1)
end
it "@customer should not be valid because name property is null" do
@customer.should_not be_valid
end
it "@customer2 should not be valid because age property is less than 0" do
@customer2.should_not be_valid
end
it "@customer_normal should be valid" do
@customer_normal.should be_valid
end
endで、試験グリーンを確認。
$ bundle exec rspec spec/ ... Finished in 0.33621 seconds 3 examples, 0 failures $
なかなかに進捗が遅い。次は controller か。
Controller
rails generate controller CustomerController とかってやるのかな。
$ rails generate controller CustomerController
create app/controllers/customer_controller_controller.rb
invoke erb
create app/views/customer_controller
invoke rspec
create spec/controllers/customer_controller_controller_spec.rb
invoke helper
create app/helpers/customer_controller_helper.rb
invoke rspec
create spec/helpers/customer_controller_helper_spec.rb
$う、しまった。CustomersController だ。destroy で削除できるかな。
$ rails destroy controller CustomerController
remove app/controllers/customer_controller_controller.rb
invoke erb
remove app/views/customer_controller
invoke rspec
remove spec/controllers/customer_controller_controller_spec.rb
invoke helper
remove app/helpers/customer_controller_helper.rb
invoke rspec
remove spec/helpers/customer_controller_helper_spec.rb
$をー、素晴しい。で、リトライ。
$ rails generate controller CustomersController
create app/controllers/customers_controller_controller.rb
invoke erb
create app/views/customers_controller
invoke rspec
create spec/controllers/customers_controller_controller_spec.rb
invoke helper
create app/helpers/customers_controller_helper.rb
invoke rspec
create spec/helpers/customers_controller_helper_spec.rb
$中身は以下。
$ cat app/controllers/customers_controller_controller.rb class CustomersControllerController < ApplicationController end $
ここにコピペすれば良いな。そろそろ出掛けるのでここで中断します。
