rspec_matcher.rb

require 'foo'
describe Foo do
  describe "a new foo" do
    before :each do ; @foo = Foo.new ; end
    it "is a pain in the butt" do
      expect(@foo).to  be_a_pain_in_the_butt
    end
    it "is awesome" do
      expect(@foo).to  be_awesome
    end
    it "is not nil" do
      expect(@foo).to_not  be_nil
    end
    it "is not the empty string" do
      expect(@foo).to_not eq ""
    end
  end
end