Simple test to check behaviour of stubs defined with allow.

stub.rb

require_relative 'test_bidon'

describe TestBidon do
  context 'when using stubs' do
  	before :each do
      @exp = double('exp')
      allow(@exp).to receive(:name).and_return('Gilles')
    end

    it 'is actually called' do
	  @exp.name.should == 'Gilles'
    end
  
    it 'should not return something else' do
  	  @exp.name.should_not == 'Bob'
    end

    it 'is not called' do
  	  puts '' # doing something else
    end
  end
  	
  context 'when using message expectations' do
  	before :each do
      @exp = double('exp')
      expect(@exp).to receive(:name).and_return('Gilles')
    end
    
    it 'is actually called' do
	  @exp.name.should == 'Gilles'
    end
  
    it 'should not return something else' do
  	  @exp.name.should_not == 'Bob'
    end

    it 'is not called' do
  	  puts '' # doing something else
    end
  end
end