old_contents: if ( typeof window === 'undefined' ) {
    require('../../app/logicalOperators');
    var expect = require('chai').expect;
  }
  
  describe('logical operators', function(){
    it('you should be able to work with logical or', function() {
      expect(logicalOperatorsAnswers.or(false, true)).to.be.ok;
      expect(logicalOperatorsAnswers.or(true, false)).to.be.ok;
      expect(logicalOperatorsAnswers.or(true, true)).to.be.ok;
      expect(logicalOperatorsAnswers.or(false, false)).not.to.be.ok;
      expect(logicalOperatorsAnswers.or(3, 4)).to.not.eq(7);
    });
  
    it('you should be able to work with logical and', function() {
      expect(logicalOperatorsAnswers.or(false, true)).not.to.be.ok;
      expect(logicalOperatorsAnswers.and(false, false)).not.to.be.ok;
      expect(logicalOperatorsAnswers.and(true, false)).not.to.be.ok;
      expect(logicalOperatorsAnswers.and(true, true)).to.be.ok;
      expect(logicalOperatorsAnswers.and(3, 4)).to.be.ok;
    });
  });
  
new_contents: if ( typeof window === 'undefined' ) {
    require('../../app/logicalOperators');
    var expect = require('chai').expect;
  }
  
  describe('logical operators', function(){
    it('you should be able to work with logical or', function() {
      expect(logicalOperatorsAnswers.or(false, true)).to.be.ok;
      expect(logicalOperatorsAnswers.or(true, false)).to.be.ok;
      expect(logicalOperatorsAnswers.or(true, true)).to.be.ok;
      expect(logicalOperatorsAnswers.or(false, false)).not.to.be.ok;
      expect(logicalOperatorsAnswers.or(3, 4)).to.not.eq(7);
    });
  
    it('you should be able to work with logical and', function() {
      expect(logicalOperatorsAnswers.and(false, true)).not.to.be.ok;
      expect(logicalOperatorsAnswers.and(false, false)).not.to.be.ok;
      expect(logicalOperatorsAnswers.and(true, false)).not.to.be.ok;
      expect(logicalOperatorsAnswers.and(true, true)).to.be.ok;
      expect(logicalOperatorsAnswers.and(3, 4)).to.be.ok;
    });
  });
  
subject: Fix failing test case under logical operators.