Support empty TLS blocks in ingress_v1

Author: andremarianiello

kubernetes/resource_kubernetes_ingress_v1_test.go

@@ -164,6 +164,39 @@ func TestAccKubernetesIngressV1_TLS(t *testing.T) {
 	})
 }
 
+func TestAccKubernetesIngressV1_emptyTLS(t *testing.T) {
+	var conf networking.Ingress
+	name := fmt.Sprintf("tf-acc-test-%s", acctest.RandStringFromCharSet(10, acctest.CharSetAlphaNum))
+	resourceName := "kubernetes_ingress_v1.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck: func() {
+			testAccPreCheck(t)
+			skipIfClusterVersionLessThan(t, "1.22.0")
+		},
+		IDRefreshName:     resourceName,
+		ProviderFactories: testAccProviderFactories,
+		CheckDestroy:      testAccCheckKubernetesIngressV1Destroy,
+		IDRefreshIgnore:   []string{"metadata.0.resource_version"},
+		Steps: []resource.TestStep{
+			{
+				Config: testAccKubernetesIngressV1Config_emptyTLS(name),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					testAccCheckKubernetesIngressV1Exists(resourceName, &conf),
+					resource.TestCheckResourceAttr(resourceName, "metadata.0.name", name),
+					resource.TestCheckResourceAttrSet(resourceName, "metadata.0.generation"),
+					resource.TestCheckResourceAttrSet(resourceName, "metadata.0.resource_version"),
+					resource.TestCheckResourceAttrSet(resourceName, "metadata.0.uid"),
+					resource.TestCheckResourceAttr(resourceName, "spec.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "spec.0.tls.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "spec.0.tls.0.hosts.#", "0"),
+					resource.TestCheckResourceAttr(resourceName, "spec.0.tls.0.secret_name", ""),
+				),
+			},
+		},
+	})
+}
+
 func TestAccKubernetesIngressV1_InternalKey(t *testing.T) {
 	var conf networking.Ingress
 	name := fmt.Sprintf("tf-acc-test-%s", acctest.RandStringFromCharSet(10, acctest.CharSetAlphaNum))
@@ -541,6 +574,26 @@ func testAccKubernetesIngressV1Config_TLS_modified(name string) string {
 }`, name)
 }
 
+func testAccKubernetesIngressV1Config_emptyTLS(name string) string {
+	return fmt.Sprintf(`resource "kubernetes_ingress_v1" "test" {
+  metadata {
+    name = "%s"
+  }
+  spec {
+    default_backend {
+      service {
+        name = "app1"
+        port {
+          number = 443
+        }
+      }
+    }
+    tls {
+    }
+  }
+}`, name)
+}
+
 func testAccKubernetesIngressV1Config_internalKey(name string) string {
 	return fmt.Sprintf(`resource "kubernetes_ingress_v1" "test" {
   metadata {

kubernetes/structure_ingress_spec_v1.go

@@ -252,12 +252,15 @@ func expandIngressV1Backend(l []interface{}) *networking.IngressBackend {
 }
 
 func expandIngressV1TLS(l []interface{}) []networking.IngressTLS {
-	if len(l) == 0 || l[0] == nil {
+	if len(l) == 0 {
 		return nil
 	}
 
 	tlsList := make([]networking.IngressTLS, len(l))
 	for i, t := range l {
+		if t == nil {
+			t = map[string]interface{}{}
+		}
 		in := t.(map[string]interface{})
 		obj := networking.IngressTLS{}