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require 'spec_helper'
describe "virtus attribute definitions" do
before do
module Examples
class Person
include Virtus
attribute :name, String
attribute :age, Integer
attribute :doctor, Boolean
attribute :salary, Decimal
end
class Manager < Person
end
end
end
subject(:person) { Examples::Person.new(attributes) }
let(:attributes) { {} }
specify 'virtus creates accessor methods' do
person.name = 'Peter'
expect(person.name).to eq('Peter')
end
specify 'the constructor accepts a hash for mass-assignment' do
john = Examples::Person.new(:name => 'John', :age => 13)
expect(john.name).to eq('John')
expect(john.age).to eq(13)
end
specify 'Boolean attributes have a predicate method' do
expect(person).not_to be_doctor
person.doctor = true
expect(person).to be_doctor
end
context 'with attributes' do
let(:attributes) { {:name => 'Jane', :age => 45, :doctor => true, :salary => 4500} }
specify "#attributes returns the object's attributes as a hash" do
expect(person.attributes).to eq(attributes)
end
specify "#to_hash returns the object's attributes as a hash" do
expect(person.to_hash).to eq(attributes)
end
specify "#to_h returns the object's attributes as a hash" do
expect(person.to_h).to eql(attributes)
end
end
context 'inheritance' do
specify 'inherits all the attributes from the base class' do
fred = Examples::Manager.new(:name => 'Fred', :age => 29)
expect(fred.name).to eq('Fred')
expect(fred.age).to eq(29)
end
specify 'lets you add attributes to the base class at runtime' do
frank = Examples::Manager.new(:name => 'Frank')
Examples::Person.attribute :just_added, String
frank.just_added = 'it works!'
expect(frank.just_added).to eq('it works!')
end
specify 'lets you add attributes to the subclass at runtime' do
person_jack = Examples::Person.new(:name => 'Jack')
manager_frank = Examples::Manager.new(:name => 'Frank')
Examples::Manager.attribute :just_added, String
manager_frank.just_added = 'awesome!'
expect(manager_frank.just_added).to eq('awesome!')
expect(person_jack).not_to respond_to(:just_added)
expect(person_jack).not_to respond_to(:just_added=)
end
end
end
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