diff --git a/tests/Settings/TestExtruderStack.py b/tests/Settings/TestExtruderStack.py
index 2327e2d5bb..3a74f36efa 100644
--- a/tests/Settings/TestExtruderStack.py
+++ b/tests/Settings/TestExtruderStack.py
@@ -306,4 +306,19 @@ def test_setMaterialByIdExists(extruder_stack, container_registry):
 #   exist.
 def test_setMaterialByIdDoesntExist(extruder_stack):
     with pytest.raises(KeyError):
-        extruder_stack.setMaterialById("some_material") #Container registry is empty now.
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+        extruder_stack.setMaterialById("some_material") #Container registry is empty now.
+
+##  Tests setting qualities by specifying an ID of a quality that exists.
+def test_setQualityByIdExists(extruder_stack, container_registry):
+    original_container_registry = UM.Settings.ContainerStack._containerRegistry
+    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all the profiles you ask of.
+
+    extruder_stack.setQualityById("some_quality") #The container registry always has a container with the ID.
+
+    #Restore.
+    UM.Settings.ContainerStack._containerRegistry = original_container_registry
+
+##  Tests setting qualities by specifying an ID of a quality that doesn't exist.
+def test_setQualityByIdDoesntExist(extruder_stack):
+    with pytest.raises(KeyError):
+        extruder_stack.setQualityById("some_quality") #Container registry is empty now.
\ No newline at end of file