```ruby
# == Schema Information
#
# Table name: group_prefs
#
#  id                         :integer          not null, primary key
#  group_id                   :integer          not null
#  membship_secretary_id      :integer
#  notify_membership_requests :boolean          default(TRUE), not null
#  created_at                 :datetime         not null
#  updated_at                 :datetime         not null
#

require 'spec_helper'

describe GroupPref do
  pending "add some examples to (or delete) #{__FILE__}"
end
```

Add some simple tests for group prefs.
user
```ruby
# == Schema Information
#
# Table name: group_prefs
#
#  id                         :integer          not null, primary key
#  group_id                   :integer          not null
#  membship_secretary_id      :integer
#  notify_membership_requests :boolean          default(TRUE), not null
#  created_at                 :datetime         not null
#  updated_at                 :datetime         not null
#

require 'spec_helper'

describe GroupPref do
  it { should belong_to(:group) }

  describe "attributes" do
    booleans = %w(
      notify_membership_requests
      )

    booleans.each do |attr|
      it "should respond to #{attr} with true or false" do
        subject.send(attr).should_not be_nil
      end
    end
  end
end
```
assistant