solved task 2

jasmine_demo/lib/jasmine_examples/Player.js

@@ -0,0 +1,24 @@
+function Player() {
+}
+Player.prototype.play = function(song) {
+  this.currentlyPlayingSong = song;
+  this.isPlaying = true;
+};
+
+Player.prototype.pause = function() {
+  this.isPlaying = false;
+};
+
+Player.prototype.resume = function() {
+  if (this.isPlaying) {
+    throw new Error("song is already playing");
+  }
+
+  this.isPlaying = true;
+};
+
+Player.prototype.makeFavorite = function() {
+  this.currentlyPlayingSong.persistFavoriteStatus(true);
+};
+
+module.exports = Player;

jasmine_demo/lib/jasmine_examples/Song.js

@@ -0,0 +1,10 @@
+function Song(title) {
+  this.title = title
+}
+
+Song.prototype.persistFavoriteStatus = function(value) {
+  // something complicated
+  throw new Error("not yet implemented");
+};
+
+module.exports = Song;