pythontests: change num layers in timeline to 1

In the test_timeline.test_auto_transition, the corresponding xges only
has one layer, so we should only expect one layer when we extract the
timeline. This fixes a change that was missing from commit
d3e2cf55e3ad6258ff09220ee6393655fdd833f1

diff --git a/tests/check/python/test_timeline.py b/tests/check/python/test_timeline.py
index 44af972..5903d1a 100644 (file)
--- a/tests/check/python/test_timeline.py
+++ b/tests/check/python/test_timeline.py
@@ -1030,7 +1030,7 @@ class TestTransitions(common.GESSimpleTimelineTest):
             mainloop.run()
 
             layers = timeline.get_layers()
-            self.assertEqual(len(layers), 2)
+            self.assertEqual(len(layers), 1)
 
             self.assertTrue(layers[0].props.auto_transition)