message: Correction du test 'double unfold'
diff: @@ -62,8 +62,8 @@ describe('fold', function() {
  expect(result.unfoldedSteps).to.have.lengthOf(1)
  expect(result.unfoldedSteps[0]).to.have.deep.property("name","top . bb")
  expect(result).to.have.property('foldedSteps')
  - expect(result.unfoldedSteps).to.have.lengthOf(1)
  - expect(result.unfoldedSteps[0]).to.have.deep.property("name","top . aa")
  + expect(result.foldedSteps).to.have.lengthOf(1)
  + expect(result.foldedSteps[0]).to.have.deep.property("name","top . aa")
  });
  });
  