```ruby
$VALUES.each do |value|
  describe "#{value} (#{value.class})" do
    subject{ value }
    it_should_behave_like "a value" 
  end
end```

Add spec_helper is definitely required there
user
```ruby
require 'spec_helper'
$VALUES.each do |value|
  describe "#{value} (#{value.class})" do
    subject{ value }
    it_should_behave_like "a value" 
  end
end```
assistant