Peepcode cash resgister example of using Jasmine with CoffeeScript

cash-register-spec.coffee

describe "Dish", ->

  describe "constructor", ->

    beforeEach ->
      @dish = new Dish 'Sirloin Steak $18.99 mains'

    it "extracts title", ->
      (expect @dish.title).toEqual('Sirloin Steak')

    it "extracts price", ->
      (expect @dish.price.cents).toEqual 1899
      (expect @dish.price.toString()).toEqual '$18.99'

    it "extracts tag", ->
      (expect @dish.tag).toEqual 'mains'

  describe "constructor with partial data", ->

    beforeEach ->
      @dish = new Dish 'Sirloin Steak $18.99'

    it "extracts title", ->
      (expect @dish.title).toEqual 'Sirloin Steak'

    it "extracts price", ->
      (expect @dish.price.toString()).toEqual '$18.99'

    it "leaves tag blank", ->
      (expect @dish.tag).toEqual ''

  describe "constructor with invalid data", ->

    beforeEach ->
      @dish = new Dish 'Sirloin Steak'

    it "extracts title", ->
      (expect @dish.title).toEqual 'Sirloin Steak'

    it "leaves price blank", ->
      (expect @dish.price.cents).toEqual 0

    it "leaves tag blank", ->
      (expect @dish.tag).toEqual ''

  describe "constructor with null description", ->

    beforeEach ->
      @dish = new Dish

    it "sets title to null", ->
      (expect @dish.title).toEqual ''


describe "Money", ->

  describe "constructor", ->

    describe "valid value", ->

      beforeEach ->
        @money = new Money '$15.99'

      it "extracts dollar and cents", ->
        (expect @money.cents).toEqual 1599

      it "formats as string", ->
        (expect @money.toString()).toEqual '$15.99'

    describe "invalid value", ->

      it "clips fractional part of cents to .99", ->
        @money = new Money '$15.909'
        (expect @money.cents).toEqual 1599

      it "uses zero if a money value can't be parsed", ->
        @money = new Money 'NOT A MONETARY VALUE'
        (expect @money.cents).toEqual 0


describe "Meal", ->

  beforeEach ->
    @donut = new Dish 'Maple Bacon Donut $1.99 #breakfast'
    @fish = new Dish 'Salmon Filet $14.99 #main'
    @dishes = [@donut, @fish]

  describe "starting blank", ->

    beforeEach ->
      @meal = new Meal

    it "adds a single dish", ->
      @meal.add @donut
      (expect @meal.dishes.length).toEqual(1)

    it "calculates total price", ->
      @meal.add @donut, @fish
      (expect @meal.totalPrice().cents).toEqual 1698

    it "updates total price when a new dish is added", ->
      (expect @meal.totalPrice().cents).toEqual 0
      @meal.add @donut
      (expect @meal.totalPrice().cents).toEqual 199
      @meal.add @fish
      (expect @meal.totalPrice().cents).toEqual 1698

    it "adds a list of dishes", ->
      @meal.add @donut, @fish
      (expect @meal.dishes.length).toEqual 2

cash-register-spec.js

(function() {
  describe("Dish", function() {
    describe("constructor", function() {
      beforeEach(function() {
        return this.dish = new Dish('Sirloin Steak $18.99 mains');
      });
      it("extracts title", function() {
        return (expect(this.dish.title)).toEqual('Sirloin Steak');
      });
      it("extracts price", function() {
        (expect(this.dish.price.cents)).toEqual(1899);
        return (expect(this.dish.price.toString())).toEqual('$18.99');
      });
      return it("extracts tag", function() {
        return (expect(this.dish.tag)).toEqual('mains');
      });
    });
    describe("constructor with partial data", function() {
      beforeEach(function() {
        return this.dish = new Dish('Sirloin Steak $18.99');
      });
      it("extracts title", function() {
        return (expect(this.dish.title)).toEqual('Sirloin Steak');
      });
      it("extracts price", function() {
        return (expect(this.dish.price.toString())).toEqual('$18.99');
      });
      return it("leaves tag blank", function() {
        return (expect(this.dish.tag)).toEqual('');
      });
    });
    describe("constructor with invalid data", function() {
      beforeEach(function() {
        return this.dish = new Dish('Sirloin Steak');
      });
      it("extracts title", function() {
        return (expect(this.dish.title)).toEqual('Sirloin Steak');
      });
      it("leaves price blank", function() {
        return (expect(this.dish.price.cents)).toEqual(0);
      });
      return it("leaves tag blank", function() {
        return (expect(this.dish.tag)).toEqual('');
      });
    });
    return describe("constructor with null description", function() {
      beforeEach(function() {
        return this.dish = new Dish;
      });
      return it("sets title to null", function() {
        return (expect(this.dish.title)).toEqual('');
      });
    });
  });
  describe("Money", function() {
    return describe("constructor", function() {
      describe("valid value", function() {
        beforeEach(function() {
          return this.money = new Money('$15.99');
        });
        it("extracts dollar and cents", function() {
          return (expect(this.money.cents)).toEqual(1599);
        });
        return it("formats as string", function() {
          return (expect(this.money.toString())).toEqual('$15.99');
        });
      });
      return describe("invalid value", function() {
        it("clips fractional part of cents to .99", function() {
          this.money = new Money('$15.909');
          return (expect(this.money.cents)).toEqual(1599);
        });
        return it("uses zero if a money value can't be parsed", function() {
          this.money = new Money('NOT A MONETARY VALUE');
          return (expect(this.money.cents)).toEqual(0);
        });
      });
    });
  });
  describe("Meal", function() {
    beforeEach(function() {
      this.donut = new Dish('Maple Bacon Donut $1.99 #breakfast');
      this.fish = new Dish('Salmon Filet $14.99 #main');
      return this.dishes = [this.donut, this.fish];
    });
    return describe("starting blank", function() {
      beforeEach(function() {
        return this.meal = new Meal;
      });
      it("adds a single dish", function() {
        this.meal.add(this.donut);
        return (expect(this.meal.dishes.length)).toEqual(1);
      });
      it("calculates total price", function() {
        this.meal.add(this.donut, this.fish);
        return (expect(this.meal.totalPrice().cents)).toEqual(1698);
      });
      it("updates total price when a new dish is added", function() {
        (expect(this.meal.totalPrice().cents)).toEqual(0);
        this.meal.add(this.donut);
        (expect(this.meal.totalPrice().cents)).toEqual(199);
        this.meal.add(this.fish);
        return (expect(this.meal.totalPrice().cents)).toEqual(1698);
      });
      return it("adds a list of dishes", function() {
        this.meal.add(this.donut, this.fish);
        return (expect(this.meal.dishes.length)).toEqual(2);
      });
    });
  });
}).call(this);