Merge pull request #2358 from Szczork/szczork/log-speed-change-video

add condition - log speed change / loading video

common/lib/xmodule/xmodule/js/spec/video/video_player_spec.js

@@ -196,6 +196,17 @@
                     });
                 });
 
+                it('speed_change_video event is not logged when speed not change', function () {
+                    expect(state.videoPlayer.log).not.toHaveBeenCalledWith(
+                        'speed_change_video',
+                        {
+                            current_time: state.videoPlayer.currentTime,
+                            old_speed: state.speed,
+                            new_speed: state.speed
+                        }
+                    );
+                });
+
                 it('log the play_video event', function () {
                     expect(state.videoPlayer.log).toHaveBeenCalledWith(
                         'play_video', { currentTime: 0 }

common/lib/xmodule/xmodule/js/src/video/03_video_player.js

@@ -338,6 +338,7 @@ function (HTML5Video, Resizer) {
 
         newSpeed = parseFloat(newSpeed).toFixed(2).replace(/\.00$/, '.0');
 
+        if (this.speed != newSpeed) {
             this.videoPlayer.log(
                 'speed_change_video',
                 {
@@ -346,6 +347,7 @@ function (HTML5Video, Resizer) {
                     new_speed: newSpeed
                 }
             );
+        }
 
         this.setSpeed(newSpeed, true);