add tests

Author: singh-shreya321

mmv1/products/memorystore/Instance.yaml

@@ -211,9 +211,8 @@ properties:
   - name: 'nodeType'
     type: String
     description:
-      "Optional. Immutable. Machine type for individual nodes of the instance.
+      "Optional. Machine type for individual nodes of the instance.
       \n Possible values:\n SHARED_CORE_NANO\nHIGHMEM_MEDIUM\nHIGHMEM_XLARGE\nSTANDARD_SMALL"
-    immutable: true
     default_from_api: true
   - name: 'persistenceConfig'
     type: NestedObject

mmv1/third_party/terraform/services/memorystore/resource_memorystore_instance_test.go

@@ -186,6 +186,49 @@ func TestAccMemorystoreInstance_updateDeletionProtection(t *testing.T) {
 	})
 }
 
+// Validate that node type is updated for the cluster
+func TestAccMemorystoreInstance_updateNodeType(t *testing.T) {
+	t.Parallel()
+
+	name := fmt.Sprintf("tf-test-%d", acctest.RandInt(t))
+
+	acctest.VcrTest(t, resource.TestCase{
+		PreCheck:                 func() { acctest.AccTestPreCheck(t) },
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories(t),
+		CheckDestroy:             testAccCheckMemorystoreInstanceDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				// create cluster with deletion protection true
+				Config: createOrUpdateMemorystoreInstance(&InstanceParams{
+					name:                 name,
+					shardCount:           3,
+					zoneDistributionMode: "MULTI_ZONE",
+					nodeType:             "HIGHMEM_MEDIUM",
+				}),
+			},
+			{
+				ResourceName:      "google_memorystore_instance.test",
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+			{
+				// update cluster with deletion protection false
+				Config: createOrUpdateMemorystoreInstance(&InstanceParams{
+					name:                 name,
+					shardCount:           3,
+					zoneDistributionMode: "MULTI_ZONE",
+					nodeType:             "STANDARD_SMALL",
+				}),
+			},
+			{
+				ResourceName:      "google_memorystore_instance.test",
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
 // Validate that persistence config is updated for the cluster
 func TestAccMemorystoreInstance_updatePersistence(t *testing.T) {
 	t.Parallel()