mocha-exports-ui

This projects lets you write your Mocha tests in the same way as original exports UI but it adds pending and exclusive tests plus shortcuts like let and const for assigning variables to the context.

Compare BDD interface and mocha-exports-ui interface:

// mocha-exports-ui interface:
module.exports = {
  'User': {
    // will add variables to the context but only once (similar to `beforeAll`)
    const: {
      db: function(done){
        connect('some://connection/string', done);
      },
      User: function(){
        return this.db.model('User', UserSchema);
      }
    },
    // same as `const` but runs before each test like `beforeEach`
    let: {
      user: function(cb){
        new this.User({name: 'joe', password: 'qwerty', email: '[email protected]'}).save(done);
      }
    },
    // a test suite is just an object that can contain other test suites and tests
    '.signup': {
      // a test
      'returns an error if email exists': function(done){
        new this.User({name: 'another_joe', password: 'qwerty', email: '[email protected]'}).save(function(err){
          expect(err.message).to.contain('email exists');
          done(err);  
        });
      }
    },
    '#save': {
      // adding minus sign will skip the test, this is the same as calling `it.skip`
      '- it hashes password': function(){},
      'omits real password': function(){},
      // exclamation point makes a test or a suite exclusive, it is equivalent to  `it.only` or `describe.only`
      '! returns an error if email is changed to existing one': function(){}
    }
  }
}

// the same using regular BDD interface
describe('User', function(){
  before(function(done){
    const _this = this;
    connect('some://connection/string', function(err, db){
      if(err) return done(err);
      _this.db = db;
      _this.user = db.model('User', UserSchema);
    });  
  });  

  beforeEach(function(done){
    const _this = this;
    new this.User({name: 'joe', password: 'qwerty', email: '[email protected]'}).save(function(err, user){
      if(err) return done(err);
      _this.user = user;
      done(err);  
    });
  })
  describe.only('.signup', function(){
    it('returns an error if email exists', function(done){
      new this.User({name: 'another_joe', password: 'qwerty', email: '[email protected]'}).save(function(err){
        expect(err.message).to.contain('email exists');
        done(err);  
      });
    });
  });
  describe('#save', function(){
    it.skip('hashes password', function(){/* some code*/});
    it('doesn\'t save real password',function(){});
    it.only('returns an error if email changed to existing',function(){})
  });
})

See the test/index.js file in this repo for an example

#Usage

• Install the package: npm install --save-dev mocha-exports-ui
• Then just provide the UI name and mocha will automatically require mocha-exports-ui: mocha --ui mocha-exports-ui test/index.test.js

###TODO:

• should add let and const to the error output, for instance instead of "before each" hook for "adds variables to the context" it should say "let" hook for "adds variables to the context"