RSpec.describe 'Test Description' do
  attr_reader :result

  before(:all)
    @result = build_result({some_parameters})
  end

  context 'Some context' do
    it 'Looks lik a result' do
      expect(result.something).to ...
    end

    it 'Feels lik a result' do
      expect(result.something).to ...
    end
  end
end

RSpec.describe 'Test Description' do
  attr_reader :result

  before(:all)
    @result = build_result({some_parameters})
  end

  context 'Some context' do
    it_behaves_like "A result" result
  end
end

RSpec.describe 'Test Description' do
  context 'for params x and y' do
    let(:expected_x) { 'x' }
    let(:expected_x) { 'y' }

    subject { build_result({x: 'x', y: 'y'}) }

    specify :aggregate_failures do
      expect(subject.x).to eq(expected_x)
      expect(subject.y).to eq(expected_y)
    end
  end
end

shared_examples_for "A result" do |argument|
 # some tests with argument
end

it_behaves_like "A result", my_argument

let(:result)     { build_result({some_parameters}) }

describe '#type_id' do
  before { @resource = FactoryGirl.create :device }
  before { @type     = Type.find @resource.type_id }

  it 'sets the type_id field' do
    expect(@resource.type_id).to equal(@type.id)
  end
end

describe '#type_id' do
  let(:resource) { FactoryGirl.create :device }
  let(:type)     { Type.find resource.type_id }

  it 'sets the type_id field' do
    expect(resource.type_id).to equal(type.id)
  end
end