gistfile1.rb

require 'rspec/core'

class TestA
  def foo
    true
  end
  
  def bar
    true
  end
end

class TestB
  def foo
    false
  end
  
  def bar
    false
  end
end


shared_examples_for 'a special behaviour' do

  let(:expected_foo) { true }
  let(:expected_bar) { true }

  its(:foo) { should eql(expected_foo) }
  its(:bar) { should eql(expected_bar) }
end

describe TestA do
  it_should_behave_like 'a special behaviour'
end

describe TestB do
  it_should_behave_like 'a special behaviour' do
    let(:expected_foo) { false }
    let(:expected_bar) { false }
  end
end