diff --git a/google/resource_composer_environment_test.go b/google/resource_composer_environment_test.go
index ad3748ee20d..7da79f1ee1e 100644
--- a/google/resource_composer_environment_test.go
+++ b/google/resource_composer_environment_test.go
@@ -115,6 +115,10 @@ func TestAccComposerEnvironment_withNodeConfig(t *testing.T) {
 	t.Parallel()
 
 	envName := acctest.RandomWithPrefix("tf-test")
+	network := acctest.RandomWithPrefix("tf-test")
+	subnetwork := network + "-1"
+	serviceAccount := acctest.RandomWithPrefix("tf-test")
+
 	var env composer.Environment
 
 	resource.Test(t, resource.TestCase{
@@ -123,7 +127,7 @@ func TestAccComposerEnvironment_withNodeConfig(t *testing.T) {
 		CheckDestroy: testAccComposerEnvironmentDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccComposerEnvironment_nodeCfg(envName),
+				Config: testAccComposerEnvironment_nodeCfg(envName, network, subnetwork, serviceAccount),
 				Check:  testAccCheckComposerEnvironmentExists("google_composer_environment.test", &env),
 			},
 			{
@@ -133,6 +137,25 @@ func TestAccComposerEnvironment_withNodeConfig(t *testing.T) {
 			},
 		},
 	})
+
+	if env.Config == nil || env.Config.NodeConfig == nil {
+		t.Fatalf("expected non-nil config and node config")
+	}
+
+	nodeCfg := env.Config.NodeConfig
+
+	expectedNetwork := fmt.Sprintf("projects/%s/global/networks/%s", getTestProjectFromEnv(), network)
+	if nodeCfg.Network != expectedNetwork {
+		t.Errorf("expected Environment network %q, got %q", expectedNetwork, nodeCfg.Network)
+	}
+
+	expectedSubnetwork := fmt.Sprintf("projects/%s/regions/us-central1/subnetworks/%s", getTestProjectFromEnv(), subnetwork)
+	if nodeCfg.Subnetwork != expectedSubnetwork {
+		t.Errorf("expected Environment subnetwork %q, got %q", expectedSubnetwork, nodeCfg.Subnetwork)
+	}
+	if !strings.HasPrefix(nodeCfg.ServiceAccount, serviceAccount+"@") {
+		t.Errorf("expected Environment service account %q to start with name %q", nodeCfg.ServiceAccount, serviceAccount)
+	}
 }
 
 // Checks behavior of config for creation for attributes that must
@@ -283,7 +306,7 @@ resource "google_composer_environment" "test" {
 `, name)
 }
 
-func testAccComposerEnvironment_nodeCfg(name string) string {
+func testAccComposerEnvironment_nodeCfg(environment, network, subnetwork, serviceAccount string) string {
 	return fmt.Sprintf(`
 resource "google_composer_environment" "test" {
 	name = "%s"
@@ -301,19 +324,19 @@ resource "google_composer_environment" "test" {
 }
 
 resource "google_compute_network" "test" {
-	name 					= "composer-test-network"
+	name 					= "%s"
 	auto_create_subnetworks = false
 }
 
 resource "google_compute_subnetwork" "test" {
-	name          = "composer-test-subnetwork"
+	name          = "%s"
 	ip_cidr_range = "10.2.0.0/16"
 	region        = "us-central1"
 	network       = "${google_compute_network.test.self_link}"
 }
 
 resource "google_service_account" "test" {
-  account_id   = "composer-env-account"
+  account_id   = "%s"
   display_name = "Test Service Account for Composer Environment"
 }
 
@@ -321,7 +344,7 @@ resource "google_project_iam_member" "composer-worker" {
   role    = "roles/composer.worker"
   member  = "serviceAccount:${google_service_account.test.email}"
 }
-`, name)
+`, environment, network, subnetwork, serviceAccount)
 }
 
 func testAccComposerEnvironment_updateOnlyFields(name string) string {