agl-compositor: Extend test to include popup support

Include additional steps to show that agl-compositor is able to show popups
based on the agl-compositor protocol.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>

test-cases/agl-compositor.yaml

@@ -9,7 +9,7 @@ metadata:
   exec-type: manual
   priority: high
   maintainer: "Apertis Project"
-  description: "Test that agl-compositor is able to run and gnome-menus is able to show and launch installed applications."
+  description: "Test that agl-compositor is able to run, it can show popups and gnome-menus is able to show and launch installed applications."
 
   resources:
     - "A monitor connected to the testing target."
@@ -17,6 +17,8 @@ metadata:
   expected:
     - "Initially this test shows the Maynard desktop."
     - "@agl-compositor-screenshot.png"
+    - "When clicking the indicator for clock and volume a popup is show."
+    - "@agl-compositor-popup-screenshot.png"
     - "When clicking the launcher button the first time a list of applications is shown."
     - "@agl-compositor-launcher1-screenshot.png"
     - "When clicking the launcher button after installing pavucontrol the icon \"Pulse Audio Volume Control\" is in the list."
@@ -32,6 +34,7 @@ run:
     - "Reboot the machine"
     - $ sudo reboot
     - "Verify that a desktop shows in screen"
+    - "Click the indicator for clock and volume in the bottom left to display a popup with additional information"
     - "Click the launcher button in the top left to display the available apps"
     - "Verify that a list of applications is shown"
     - "Enable Development repositories"