kopi.js/test/kopi_spec.js

API for ordering Singaporean Coffee

var Kopi = require('../dist/kopi');

describe('Kopi', () => {

  describe('#parse', () => {

    it('returns Kopi contents if pass in "Kopi"', () => {
      var content = Kopi.parse('Kopi');
      expect(content).to.deep.equal({
        water: .4,
        coffee: .4,
        sugar: 1,
        condensed_milk: .2,
        evaporated_milk: 0,
        state: 'warm'
      });
    });

    it('returns Kopi O contents if pass in "Kopi O"', () => {
      var content = Kopi.parse('Kopi O');
      expect(content).to.deep.equal({
        water: .5,
        coffee: .5,
        sugar: 1,
        condensed_milk: 0,
        evaporated_milk: 0,
        state: 'warm'
      });
    });

    it('returns Kopi C contents if pass in "Kopi C"', () => {
      var content = Kopi.parse('Kopi C');
      expect(content).to.deep.equal({
        water: .4,
        coffee: .4,
        sugar: 1,
        condensed_milk: 0,
        evaporated_milk: .2,
        state: 'warm'
      });
    });

    it('returns no sugar if pass in "Kosong"', () => {
      var content = Kopi.parse('Kopi O Kosong');
      expect(content.sugar).to.equal(0);
    });

    it('returns more condensed milk if pass in "Gah Dai"', () => {
      var content = Kopi.parse('Kopi');
      var contentGahDai = Kopi.parse('Kopi Gah Dai');
      expect(contentGahDai.condensed_milk).to.be.gt(content.condensed_milk);
    });

    it('returns less sugar if pass in "Siu Dai"', () => {
      var content = Kopi.parse('Kopi Siu Dai');
      expect(content.sugar).to.be.equal(.5);
    });

    it('returns more water, less coffee if pass in "Po"', () => {
      var content = Kopi.parse('Kopi Po');
      expect(content.water).to.be.gt(content.coffee);
    });

    it('returns more coffee, less water if pass in "Gao"', () => {
      var content = Kopi.parse('Kopi Gao');
      expect(content.coffee).to.be.gt(content.water);
    });

    it('returns more coffee, no water if pass in "Di Lo"', () => {
      var content = Kopi.parse('Kopi Di Lo');
      expect(content.coffee).to.be.gt(content.water);
      expect(content.water).to.be.equal(0);
    });

    it('returns ice if pass in "Peng"', () => {
      var content = Kopi.parse('Kopi Peng');
      expect(content.state).to.be.equal('iced');
    });

    it('returns lukewarm if pass in "Pua Sio"', () => {
      var content = Kopi.parse('Kopi Pua Sio');
      expect(content.state).to.be.equal('lukewarm');
    });

    it('returns water if pass in "Water"', () => {
      var content = Kopi.parse('Water');
      expect(content.water).to.be.equal(1);
    });

    it('throws an error if pass in "Kopi Kosong"', () => {
      expect(function(){
        Kopi.parse('Kopi Kosong')
      }).to.throw(/invalid kopi/i);
    });

  });

  return describe('#stringify', () => {

    it('returns "Kopi" if pass in Kopi ingredients', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: .4,
        coffee: .4,
        sugar: 1
      });
      expect(name).to.equal('Kopi');
    });

    it('returns "Kopi Gao" if more coffee is added', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: .2,
        coffee: .6,
        sugar: 1
      });
      expect(name).to.equal('Kopi Gao');
    });

    it('returns "Kopi Po" if less coffee is added', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: .6,
        coffee: .2,
        sugar: 1
      });
      expect(name).to.equal('Kopi Po');
    });

    it('returns "Kopi Siew Dai" if less sugar is added', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: .4,
        coffee: .4,
        sugar: 0.5
      });
      expect(name).to.equal('Kopi Siew Dai');
    });

    it('returns "Kopi Siew Dai" and not "Kopi Kosong" if no sugar is added', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: .4,
        coffee: .4,
        sugar: 0
      });
      expect(name).to.equal('Kopi Siew Dai');
    });

    it('returns "Kopi Gah Dai" if more milk is added', () => {
      var name = Kopi.stringify({
        condensed_milk: .4,
        water: .2,
        coffee: .4,
        sugar: 1
      });
      expect(name).to.equal('Kopi Gah Dai');
    });

    it('returns "Kopi Di Lo" if no water is added', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: 0,
        coffee: .4,
        sugar: 1
      });
      expect(name).to.equal('Kopi Di Lo');
    });

    it('returns Kopi name includes "Peng" if ice is added', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: .4,
        coffee: .4,
        sugar: 1,
        state: 'iced'
      });

      expect(name).to.equal('Kopi Peng');

      name = Kopi.stringify({
        condensed_milk: .2,
        water: .2,
        coffee: .6,
        sugar: 1,
        state: 'iced'
      });

      expect(name).to.equal('Kopi Peng Gao');
    });

    it('returns Kopi name includes "Pua Sio" if it\'s lukewarm', () => {
      var name = Kopi.stringify({
        condensed_milk: .2,
        water: .4,
        coffee: .4,
        sugar: 1,
        state: 'lukewarm'
      });

      expect(name).to.equal('Kopi Pua Sio');

      name = Kopi.stringify({
        condensed_milk: .2,
        water: .2,
        coffee: .6,
        sugar: 1,
        state: 'lukewarm'
      });

      expect(name).to.equal('Kopi Pua Sio Gao');
    });

    context('when no milk is added', () => {

      it('returns "Kopi O" if equal amounts of water and coffee is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          water: .5,
          coffee: .5,
          sugar: 1
        });
        expect(name).to.equal('Kopi O');
      });

      it('returns "Kopi O Gao" if more coffee is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          water: .3,
          coffee: .7,
          sugar: 1
        });
        expect(name).to.equal('Kopi O Gao');
      });

      it('returns "Kopi O Po" if less coffee is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          water: .7,
          coffee: .3,
          sugar: 1
        });
        expect(name).to.equal('Kopi O Po');
      });

      it('returns "Kopi O Siew Dai" if less sugar is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          water: .5,
          coffee: .5,
          sugar: 0.5
        });
        expect(name).to.equal('Kopi O Siew Dai');
      });

      it('returns "Kopi O Kosong" if no sugar is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          water: .5,
          coffee: .5,
          sugar: 0
        });
        expect(name).to.equal('Kopi O Kosong');
      });

    });

    context('when evaporated milk is used', () => {

      it('returns "Kopi C" if equal amounts of water and coffee is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          evaporated_milk: .2,
          water: .4,
          coffee: .4,
          sugar: 1
        });
        expect(name).to.equal('Kopi C');
      });

      it('returns "Kopi C Gao" if more coffee is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          evaporated_milk: .2,
          water: .2,
          coffee: .6,
          sugar: 1
        });
        expect(name).to.equal('Kopi C Gao');
      });

      it('returns "Kopi C Po" if less coffee is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          evaporated_milk: .2,
          water: .7,
          coffee: .3,
          sugar: 1
        });
        expect(name).to.equal('Kopi C Po');
      });

      it('returns "Kopi C Siew Dai" if less sugar is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          evaporated_milk: .2,
          water: .5,
          coffee: .5,
          sugar: 0.5
        });
        expect(name).to.equal('Kopi C Siew Dai');
      });

      return it('returns "Kopi C Kosong" if no sugar is added', () => {
        var name = Kopi.stringify({
          condensed_milk: 0,
          evaporated_milk: .2,
          water: .5,
          coffee: .5,
          sugar: 0
        });
        expect(name).to.equal('Kopi C Kosong');
      });

    });

  });

});