khutzpa/jasmine-standalone-4.1.1/spec/PlayerSpec.js

Node powered, cross-platform, drop-in replacement for Chutzpah.exe

/* globals Player, Song */
describe("Player", function () {
    var player;
    var song;

    beforeEach(function () {
        player = new Player();
        song = new Song();
    });

    it("should be able to play a Song", function () {
        player.play(song);
        expect(player.currentlyPlayingSong).toEqual(song);

        //demonstrates use of custom matcher
        expect(player).toBePlaying(song);
    });

    describe("when song has been paused", function () {
        beforeEach(function () {
            player.play(song);
            player.pause();
        });

        it("should indicate that the song is currently paused", function () {
            expect(player.isPlaying).toBeFalsy();

            // demonstrates use of 'not' with a custom matcher
            expect(player).not.toBePlaying(song);
        });

        it("should be possible to resume", function () {
            player.resume();
            expect(player.isPlaying).toBeTruthy();
            expect(player.currentlyPlayingSong).toEqual(song);
        });
    });

    // demonstrates use of spies to intercept and test method calls
    it("tells the current song if the user has made it a favorite", function () {
        spyOn(song, "persistFavoriteStatus");

        player.play(song);
        player.makeFavorite();

        expect(song.persistFavoriteStatus).toHaveBeenCalledWith(true);
    });

    //demonstrates use of expected exceptions
    describe("#resume", function () {
        it("should throw an exception if song is already playing", function () {
            player.play(song);

            expect(function () {
                player.resume();
            }).toThrowError("song is already playing");
        });
    });
});