vlanid 0 is supported (#562)

nutanix/resource_nutanix_subnet.go

@@ -717,10 +717,8 @@ func getSubnetResources(d *schema.ResourceData, subnet *v3.SubnetResources) {
 		dhcpo.DomainSearchList = expandStringList(v.([]interface{}))
 	}
 
-	if v, ok := d.GetOk("vlan_id"); ok {
-		if v.(int) == 0 || ok {
-			subnet.VlanID = utils.Int64Ptr(int64(v.(int)))
-		}
+	if v, ok := d.GetOkExists("vlan_id"); ok {
+		subnet.VlanID = utils.Int64Ptr(int64(v.(int)))
 	}
 
 	if v, ok := d.GetOk("network_function_chain_reference"); ok {

nutanix/resource_nutanix_subnet_test.go

@@ -255,6 +255,24 @@ func TestAccNutanixSubnet_nameDuplicated(t *testing.T) {
 	})
 }
 
+func TestAccNutanixSubnet_WithVlan0(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNutanixSubnetDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccNutanixSubnetConfig(0),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNutanixSubnetExists(resourceNameSubnet),
+					resource.TestCheckResourceAttr(resourceNameSubnet, "name", "acctest-managed-0"),
+					resource.TestCheckResourceAttr(resourceNameSubnet, "description", "Description of my unit test VLAN"),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckNutanixSubnetExists(n string) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		rs, ok := s.RootModule().Resources[n]