structure for rails model test

classname_spec.rb

describe ClassName do
  describe 'Database' do
  end

  describe 'Relations' do
  end

  describe 'Validations' do
  end

  describe 'Scopes' do
  end

  describe 'Class methods' do
  end

  describe 'Callbacks' do
  end

  describe 'Instance Methods' do
  end
end

Clean version:

describe ClassName do
  describe 'Class' do
  end

  describe 'Instance' do
    describe 'Validations'
    describe 'Callbacks'
  end 

  describe 'Database'
end

improved

  describe 'Class' do
    pending
  end

  describe 'Instance' do
    pending
  end

  describe 'Validations' do
    pending
  end

  describe 'Callbacks' do
    pending
  end

  # TODO: move to a spec/database folder
  describe 'Database' do
    pending
  end