```ruby
# == Schema Information
#
# Table name: library_notes
#
#  id                  :integer         not null, primary key
#  library_item_id     :integer         not null
#  title               :string(255)
#  body                :text            not null
#  library_document_id :integer
#

require 'spec_helper'

describe Library::Note do
  it_behaves_like "a library component"

  it "should be valid" do
    note = FactoryGirl.create(:library_note)
    note.should be_valid
  end

  it { should belong_to(:document) }
  it { should validate_presence_of(:body) }
end
```

Add test for note searchable_text
user
```ruby
# == Schema Information
#
# Table name: library_notes
#
#  id                  :integer         not null, primary key
#  library_item_id     :integer         not null
#  title               :string(255)
#  body                :text            not null
#  library_document_id :integer
#

require 'spec_helper'

describe Library::Note do
  it_behaves_like "a library component"

  it "should be valid" do
    note = FactoryGirl.create(:library_note)
    note.should be_valid
  end

  it { should belong_to(:document) }
  it { should validate_presence_of(:body) }

  describe "searchable text" do
    let(:note) { FactoryGirl.create(:library_note) }

    it "should have a searchable title" do
      note.searchable_text.should include (note.title)
    end

    it "should have a searchable body" do
      note.searchable_text.should include (note.body)
    end
  end
end
```
assistant