subject { build(:user,firstname:‘john‘,lastname:‘doe‘)}it { should be_named ‘john doe‘}

subject { Contact.new }sperify { should validate_presence_of :firstname } 

Rspec::Matchers.define :be_named do |expected|    match do |actual|        actual.name eq expected    end    description do         "return a full name as a string"    endend#use the defined matchersit { should be_named ‘John Doe‘}