rspec-expectations adds should
and should_not
to every object and includes
several standard matchers in RSpec::Matchers
gem install rspec # for rspec-core, rspec-expectations, rspec-mocks
gem install rspec-expectations # for rspec-expectations only
Matchers are objects used to compose expectations:
result.should eq("this value")
In that example, eq("this value")
returns a Matcher
object that
compares the actual result
to the expected "this value"
.