Add plancheck for update test

Author: plus-1s

mmv1/third_party/terraform/services/iamworkforcepool/resource_iam_oauth_client_credential_test.go.tmpl

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
+	"github.com/hashicorp/terraform-plugin-testing/plancheck"
 
 	"github.com/hashicorp/terraform-provider-google/google/acctest"
 )
@@ -32,6 +33,11 @@ func TestAccIAMWorkforcePoolOauthClientCredential_full(t *testing.T) {
 			},
 			{
 				Config: testAccIAMWorkforcePoolOauthClientCredential_full_update(context),
+				ConfigPlanChecks: resource.ConfigPlanChecks{
+					PreApply: []plancheck.PlanCheck{
+						plancheck.ExpectResourceAction("google_iam_oauth_client_credential.example", plancheck.ResourceActionUpdate),
+					},
+				},
 			},
 			{
 				ResourceName:            "google_iam_oauth_client_credential.example",
@@ -41,6 +47,11 @@ func TestAccIAMWorkforcePoolOauthClientCredential_full(t *testing.T) {
 			},
 						{
 				Config: testAccIAMWorkforcePoolOauthClientCredential_full_cleanOptionalFields(context),
+				ConfigPlanChecks: resource.ConfigPlanChecks{
+					PreApply: []plancheck.PlanCheck{
+						plancheck.ExpectResourceAction("google_iam_oauth_client_credential.example", plancheck.ResourceActionUpdate),
+					},
+				},
 			},
 			{
 				ResourceName:            "google_iam_oauth_client_credential.example",