This package helps you check that the attributes and validations of a model have been defined correctly.
Matchers
have_attribute
You may have created a model Store as follows:
class CreateStores < ActiveRecord::Migration
def change
create_table :stores do |t|
t.string :title
t.string :body, :null => false
t.string :url, :limit => 1024
t.boolean :open
end
end
end
The have_attribute matcher allows you test each of these attributes as follows:
require 'spec_helper'
describe Store do
it { should have_attribute(:title) }
it { should have_attribute(:body).with(:type => :string, :null => false) }
it { should have_attribute(:url).with(:type => :string, :limit => 1024) }
it { should have_attribute(:open).with(:type => :boolean) }
end
validate
You may have a model User as follows:
class User < ActiveRecord::Base
...
validates :url, url: true
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe User do
it { should validate :url, url: true }
end
validate_inclusion_of
You may have a model User as follows:
class User < ActiveRecord::Base
...
validates_inclusion_of :verified, in: [true, false]
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe User do
it { should validate_inclusion_of :verfied, in: [true, false] }
end
validate_length_of
You may have a model Article as follows:
class Article < ActiveRecord::Base
...
validates_length_of :title, maximum: 255
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe Article do
it { should validate_length_of :title, maximum: 255 }
end
validate_numericality_of
You may have a model User as follows:
class User < ActiveRecord::Base
...
validates_numericality_of :age, greater_than_or_equal_to: 0
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe User do
it { should validate_numericality_of :age, greater_than_or_equal_to: 0 }
end
validate_presence_of
You may have a model User as follows:
class User < ActiveRecord::Base
...
validates_presence_of :email
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe User do
it { should validate_presence_of :email }
end
validate_uniqueness_of
You may have a model User as follows:
class User < ActiveRecord::Base
...
validates_uniqueness_of :email
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe User do
it { should validate_uniqueness_of :email }
end
belong_to
You may have a model User as follows:
class User < ActiveRecord::Base
...
belongs_to :community
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe User do
it { should belong_to :community }
end
have_many
You may have a model Blog as follows:
class Blog < ActiveRecord::Base
...
has_many :posts
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe Blog do
it { should have_many :posts }
end
have_one
You may have a model Blog as follows:
class Blog < ActiveRecord::Base
...
has_one :author
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe Blog do
it { should have_one :author }
end
has_and_belongs_to_many
You may have a model Person as follows:
class Person < ActiveRecord::Base
...
has_and_belongs_to_many :groups, class_name: 'Organization'
...
end
This matcher allows you to write the following spec:
require 'spec_helper'
describe Person do
it { should have_and_belong_to_many :groups, class_name: 'Organization' }
end
Using in Specs
To make these matchers available in your model specs, do the following:
Gemfile
group :test do
...
gem 'specstar-models', '~> 0.2.3'
...
end
spec/spec_helper.rb
require 'specstar/models'
RSpec.configure do |config|
...
config.include Specstar::Models::Matchers, :type => :model
...
end
Related Tools
You may also want to consider the following gems to help with your specs:
- specstar-controllers: Matchers for checking that the filters and layouts in a controller have been defined correctly. Learn more here. Released gems are here.
- specstar-support-random: Utility methods for generating random objects (e.g. URLs, emails, hashes) for use in your specs. Learn more here. Released gems are here.