--- /dev/null
+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();
+ }).toThrow("song is already playing");
+ });
+ });
+});
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