networking fix (#33)

kind/resource_cluster_test.go

@@ -142,6 +142,19 @@ func TestAccClusterConfigBase(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "kind_config.0.api_version", "kind.x-k8s.io/v1alpha4"),
 				),
 			},
+			{
+				Config: testAccClusterConfigAndExtraWithEmptyNetwork(clusterName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckClusterCreate(resourceName),
+					resource.TestCheckResourceAttr(resourceName, "name", clusterName),
+					resource.TestCheckNoResourceAttr(resourceName, "node_image"),
+					resource.TestCheckResourceAttr(resourceName, "wait_for_ready", "false"),
+					resource.TestCheckResourceAttr(resourceName, "kind_config.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "kind_config.0.kind", "Cluster"),
+					resource.TestCheckResourceAttr(resourceName, "kind_config.0.api_version", "kind.x-k8s.io/v1alpha4"),
+					resource.TestCheckResourceAttr(resourceName, "kind_config.0.networking.#", "1"),
+				),
+			},
 		},
 	})
 }
@@ -639,3 +652,18 @@ resource "kind_cluster" "test" {
 }
 `, name)
 }
+
+func testAccClusterConfigAndExtraWithEmptyNetwork(name string) string {
+	return fmt.Sprintf(`
+resource "kind_cluster" "test" {
+  name = "%s"
+  wait_for_ready = false
+  kind_config {
+	kind = "Cluster"
+	api_version = "kind.x-k8s.io/v1alpha4"
+
+	networking {}
+  }
+}
+`, name)
+}

kind/schema_kind_config.go

@@ -132,7 +132,6 @@ func kindConfigNetworkingFields() map[string]*schema.Schema {
 		},
 		"disable_default_cni": {
 			Type:     schema.TypeBool,
-			Default:  false,
 			Optional: true,
 		},
 		"kube_proxy_mode": {

kind/structure_kind_config.go

@@ -23,8 +23,10 @@ func flattenKindConfig(d map[string]interface{}) *v1alpha4.Cluster {
 	networking := mapKeyIfExists(d, "networking")
 	if networking != nil {
 		if n := networking.([]interface{}); len(n) == 1 { // MaxItems: 1, no more than one allowed so we don't have to loop here
-			data := n[0].(map[string]interface{})
-			obj.Networking = flattenKindConfigNetworking(data)
+			if n[0] != nil {
+				data := n[0].(map[string]interface{})
+				obj.Networking = flattenKindConfigNetworking(data)
+			}
 		}
 	}
 
@@ -93,7 +95,7 @@ func flattenKindConfigNetworking(d map[string]interface{}) v1alpha4.Networking {
 
 	apiServerPort := mapKeyIfExists(d, "api_server_port")
 	if apiServerPort != nil {
-		obj.APIServerPort = apiServerPort.(int32)
+		obj.APIServerPort = int32(apiServerPort.(int))
 	}
 
 	disableDefaultCNI := mapKeyIfExists(d, "disable_default_cni")
@@ -174,11 +176,11 @@ func flattenKindConfigExtraPortMappings(d map[string]interface{}) v1alpha4.PortM
 
 	containerPort := mapKeyIfExists(d, "container_port")
 	if containerPort != nil {
-		obj.ContainerPort = containerPort.(int32)
+		obj.ContainerPort = int32(containerPort.(int))
 	}
 	hostPort := mapKeyIfExists(d, "host_port")
 	if hostPort != nil {
-		obj.HostPort = hostPort.(int32)
+		obj.HostPort = int32(hostPort.(int))
 	}
 	listenAddress := mapKeyIfExists(d, "listen_address")
 	if listenAddress != nil && listenAddress.(string) != "" {