gistfile1.builder

# you can turn two tests into one if you are testing almost the same thing
# example
  before(:each) do
    @project = Project.new
  end    

  it "should contain errors on a blank url" do
    @project.save
    @project.errors.should include({:url=>["can't be blank"]})
  end

  it "should contain erros on a blank name" do
    @project.save
    @project.errors.should include({:name=>["can't be blank"]})
  end

#The above tests are very clear and lets the developer know what is going on, but it is
# duplicated except for the attribute being tested... so lets refactor!

  it "should contain errors on a blank url or name" do
    @project.save
    [:url,:name].each do |attrib|
      @project.errors.should include({attrib=>["can't be blank"]})
    end
  end

# You should not feel that you HAVE to refactor the above two into one, as most of the time
# readability in tests should trump the DRY principal.