[longomatch] Add a test to check camera restore after event unload.

[Andoni Morales Alastruey <amorales src gnome org>]

commit 3a6e9ff17f27d45218ec367ced358d71d953d722
Author: Julien Moutte <julien fluendo com>
Date:   Sun Mar 29 18:33:26 2015 +0200

    Add a test to check camera restore after event unload.
    
    Indeed after loading an event with a list of visible cameras

 Tests/Services/TestPlayerController.cs |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/Tests/Services/TestPlayerController.cs b/Tests/Services/TestPlayerController.cs
index 40a599e..e6fa868 100644
--- a/Tests/Services/TestPlayerController.cs
+++ b/Tests/Services/TestPlayerController.cs
@@ -556,11 +556,20 @@ namespace Tests.Services
                        PreparePlayer ();
                        player.ElementLoadedEvent += (element, hasNext) => {
                                if (element == null) {
+                                       elementLoaded--;
+                               } else {
                                        elementLoaded++;
                                }
                        };
-                       player.UnloadCurrentEvent ();
+                       // Load
+                       player.LoadEvent (mfs, evt, evt.Start, true);
                        Assert.AreEqual (1, elementLoaded);
+                       Assert.AreEqual (evt.CamerasVisible, player.CamerasVisible);
+                       // Unload
+                       player.UnloadCurrentEvent ();
+                       Assert.AreEqual (0, elementLoaded);
+                       // Check that cameras have been restored
+                       Assert.AreSame (new List<int> { 0, 1 }, player.CamerasVisible);
                }
 
                [Test ()]