Add testcase for intro window - SL #3904

Signed-off-by: Manuel Quiñones <manuq@laptop.org>
Acked-by: Simon Schampijer <simon@laptop.org>

tests/graphics/intro.py

@@ -0,0 +1,8 @@
+from gi.repository import Gtk
+from common import set_theme
+from jarabe.intro.window import IntroWindow
+
+set_theme()
+win = IntroWindow()
+win.show_all()
+Gtk.main()