WTF!

user.rb

class User
  include Mongoid::Document

  field :email

  validates_format_of :email, :with => /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}$/i, :message => "is not a valid email adress."
end

user_spec.rb

# Maybe I'm just old-school, but I prefer this...
describe User do
  
  it "validates email addresses" do
    subject.email = 'bot@kimonoapp.com'
    subject.should be_valid

    subject.email = 'b!o^t@kimonoapp.com'
    subject.should_not be_valid

    # don't forget to check for valid and invalid domains...
    subject.email = 'bot@kimono-app.com'
    subject.should be_valid

    subject.email = 'bot@kimono_app.com'
    subject.should_not be_valid

    # and those bastards, leading and trailing whitespace...
    subject.email = ' bot@kimonoapp.com'
    subject.should_not be_valid

    subject.email = 'bot@kimonoapp.com '
    subject.should_not be_valid
end

wtf.txt

  3) User 
     Failure/Error: it { should validate_format_of(:email).to_allow('bot@kimonoapp.com').not_to_allow('b!o^t@kimonoapp.com') }
       Expected User to validate format of "email" allowing the value "bot@kimonoapp.com" and  not allowing the value "b!o^t@kimonoapp.com"; instead got "format" validator on "email" with "b!o^t@kimonoapp.com" as a valid value
     # ./spec/models/user_spec.rb:15:in `__script__'
     # kernel/common/eval18.rb:43:in `instance_eval'
     # kernel/bootstrap/array18.rb:16:in `map'
     # kernel/bootstrap/array18.rb:16:in `map'
     # kernel/loader.rb:686:in `run_at_exits'
     # kernel/loader.rb:706:in `epilogue'
     # kernel/loader.rb:837:in `main'