diff --git a/tests/Settings/TestGlobalStack.py b/tests/Settings/TestGlobalStack.py
index 54988461cd..405edf3759 100644
--- a/tests/Settings/TestGlobalStack.py
+++ b/tests/Settings/TestGlobalStack.py
@@ -401,7 +401,7 @@ def test_removeContainer(global_stack):
     with pytest.raises(InvalidOperationError):
         global_stack.removeContainer(unittest.mock.MagicMock())
 
-##  Tests adding a definition by specifying an ID of a definition that exists.
+##  Tests setting definitions by specifying an ID of a definition that exists.
 def test_setDefinitionByIdExists(global_stack, container_registry):
     original_container_registry = UM.Settings.ContainerStack._containerRegistry
     UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all the profiles you ask of.
@@ -411,13 +411,13 @@ def test_setDefinitionByIdExists(global_stack, container_registry):
     #Restore.
     UM.Settings.ContainerStack._containerRegistry = original_container_registry
 
-##  Tests adding a definition by specifying an ID of a definition that doesn't
+##  Tests setting definitions by specifying an ID of a definition that doesn't
 #   exist.
 def test_setDefinitionByIdDoesntExist(global_stack):
     with pytest.raises(KeyError):
         global_stack.setDefinitionById("some_definition") #Container registry is empty now.
 
-##  Tests adding definition changes by specifying an ID of a container that
+##  Tests setting definition changes by specifying an ID of a container that
 #   exists.
 def test_setDefinitionChangesByIdExists(global_stack, container_registry):
     original_container_registry = UM.Settings.ContainerStack._containerRegistry
@@ -428,12 +428,28 @@ def test_setDefinitionChangesByIdExists(global_stack, container_registry):
     #Restore.
     UM.Settings.ContainerStack._containerRegistry = original_container_registry
 
-##  Tests adding definition changes by specifying an ID of a container that
+##  Tests setting definition changes by specifying an ID of a container that
 #   doesn't exist.
 def test_setDefinitionChangesByIdDoesntExist(global_stack):
     with pytest.raises(KeyError):
         global_stack.setDefinitionChangesById("some_definition_changes") #Container registry is empty now.
 
+##  Tests setting materials by specifying an ID of a material that exists.
+def test_setMaterialByIdExists(global_stack, container_registry):
+    original_container_registry = UM.Settings.ContainerStack._containerRegistry
+    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all the profiles you ask of.
+
+    global_stack.setMaterialById("some_material") #The container registry always has a container with the ID.
+
+    #Restore.
+    UM.Settings.ContainerStack._containerRegistry = original_container_registry
+
+##  Tests setting materials by specifying an ID of a material that doesn't
+#   exist.
+def test_setMaterialByIdDoesntExist(global_stack):
+    with pytest.raises(KeyError):
+        global_stack.setMaterialById("some_material") #Container registry is empty now.
+
 ##  Tests whether changing the next stack is properly forbidden.
 def test_setNextStack(global_stack):
     with pytest.raises(InvalidOperationError):
@@ -480,7 +496,7 @@ def test_setPropertyOtherContainers(target_container, global_stack):
     }
     assert containers[target_container].getProperty(key, property) == output_value
 
-##  Tests adding a variant by specifying an ID of a variant that exists.
+##  Tests setting variants by specifying an ID of a variant that exists.
 def test_setVariantByIdExists(global_stack, container_registry):
     original_container_registry = UM.Settings.ContainerStack._containerRegistry
     UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all the profiles you ask of.
@@ -490,7 +506,7 @@ def test_setVariantByIdExists(global_stack, container_registry):
     #Restore.
     UM.Settings.ContainerStack._containerRegistry = original_container_registry
 
-##  Tests adding a variant by specifying an ID of a variant that doesn't exist.
+##  Tests setting variants by specifying an ID of a variant that doesn't exist.
 def test_setVariantByIdDoesntExist(global_stack):
     with pytest.raises(KeyError):
         global_stack.setVariantById("some_variant") #Container registry is empty now.
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