Fix intermittent QgsMapLayerStore test failure

tests/src/python/test_qgsmaplayerstore.py

@@ -17,6 +17,7 @@
 from qgis.PyQt.QtCore import QT_VERSION_STR
 import sip
 from qgis.PyQt.QtTest import QSignalSpy
+from time import sleep
 
 start_app()
 
@@ -201,7 +202,11 @@ def test_mapLayersByName(self):
         self.assertEqual(store.mapLayersByName('test2'), [l2])
 
         #duplicate name
+
+        # little bit of a hack - we don't want a duplicate ID and since IDs are currently based on time we wait a bit here
+        sleep(0.1)
         l3 = createLayer('test')
+
         store.addMapLayer(l3)
         self.assertEqual(set(store.mapLayersByName('test')), {l1, l3})