58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
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describe("Player", function() {
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var player;
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var song;
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beforeEach(function() {
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player = new Player();
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song = new Song();
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});
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it("should be able to play a Song", function() {
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player.play(song);
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expect(player.currentlyPlayingSong).toEqual(song);
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//demonstrates use of custom matcher
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expect(player).toBePlaying(song);
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});
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describe("when song has been paused", function() {
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beforeEach(function() {
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player.play(song);
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player.pause();
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});
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it("should indicate that the song is currently paused", function() {
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expect(player.isPlaying).toBeFalsy();
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// demonstrates use of 'not' with a custom matcher
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expect(player).not.toBePlaying(song);
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});
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it("should be possible to resume", function() {
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player.resume();
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expect(player.isPlaying).toBeTruthy();
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expect(player.currentlyPlayingSong).toEqual(song);
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});
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});
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// demonstrates use of spies to intercept and test method calls
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it("tells the current song if the user has made it a favorite", function() {
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spyOn(song, 'persistFavoriteStatus');
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player.play(song);
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player.makeFavorite();
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expect(song.persistFavoriteStatus).toHaveBeenCalledWith(true);
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});
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//demonstrates use of expected exceptions
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describe("#resume", function() {
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it("should throw an exception if song is already playing", function() {
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player.play(song);
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expect(function() {
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player.resume();
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}).toThrow("song is already playing");
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});
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});
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});
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