add tests

mmv1/third_party/terraform/tests/resource_spanner_database_test.go.erb

@@ -22,6 +22,13 @@ func TestAccSpannerDatabase_basic(t *testing.T) {
 		Providers:    testAccProviders,
 		CheckDestroy: testAccCheckSpannerDatabaseDestroyProducer(t),
 		Steps: []resource.TestStep{
+			{
+				Config: testAccSpannerDatabase_virtualUpdate(instanceName, databaseName),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttrSet("google_spanner_database.basic", "state"),
+					resource.TestCheckResourceAttr("google_spanner_database.basic", "version_retention_period", "1h"), // default set by API
+				),
+			},
 			{
 				Config: testAccSpannerDatabase_basic(instanceName, databaseName),
 				Check: resource.ComposeTestCheckFunc(
@@ -120,6 +127,27 @@ resource "google_spanner_database" "basic" {
 `, instanceName, instanceName, databaseName)
 }
 
+func testAccSpannerDatabase_virtualUpdate(instanceName, databaseName string) string {
+	return fmt.Sprintf(`
+resource "google_spanner_instance" "basic" {
+  name         = "%s"
+  config       = "regional-us-central1"
+  display_name = "%s-display"
+  num_nodes    = 1
+}
+
+resource "google_spanner_database" "basic" {
+  instance = google_spanner_instance.basic.name
+  name     = "%s"
+  ddl = [
+	"CREATE TABLE t1 (t1 INT64 NOT NULL,) PRIMARY KEY(t1)",
+	"CREATE TABLE t2 (t2 INT64 NOT NULL,) PRIMARY KEY(t2)",
+  ]
+  deletion_protection = true
+}
+`, instanceName, instanceName, databaseName)
+}
+
 func TestAccSpannerDatabase_postgres(t *testing.T) {
 	t.Parallel()
 

mmv1/third_party/terraform/tests/resource_spanner_instance_test.go

@@ -147,6 +147,35 @@ func TestAccSpannerInstance_update(t *testing.T) {
 	})
 }
 
+func TestAccSpannerInstance_virtualUpdate(t *testing.T) {
+	// Randomness
+	skipIfVcr(t)
+	t.Parallel()
+
+	dName := fmt.Sprintf("spanner-dname1-%s", randString(t, 10))
+	vcrTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckSpannerInstanceDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccSpannerInstance_virtualUpdate(dName, "true"),
+			},
+			{
+				ResourceName: "google_spanner_instance.basic",
+				ImportState:  true,
+			},
+			{
+				Config: testAccSpannerInstance_virtualUpdate(dName, "false"),
+			},
+			{
+				ResourceName: "google_spanner_instance.basic",
+				ImportState:  true,
+			},
+		},
+	})
+}
+
 func testAccSpannerInstance_basic(name string) string {
 	return fmt.Sprintf(`
 resource "google_spanner_instance" "basic" {
@@ -196,3 +225,15 @@ resource "google_spanner_instance" "updater" {
 }
 `, name, nodes, extraLabel)
 }
+
+func testAccSpannerInstance_virtualUpdate(name, virtual string) string {
+	return fmt.Sprintf(`
+resource "google_spanner_instance" "basic" {
+  name         = "%s"
+  config       = "regional-us-central1"
+  display_name = "%s"
+  processing_units = 100
+  force_destroy    = "%s"
+}
+`, name, name, virtual)
+}