elbv2: Prefer string enum types in acceptance tests.

Author: ewbankkit

internal/service/elbv2/const.go

@@ -201,8 +201,8 @@ const (
 	healthCheckPortTrafficPort = "traffic-port"
 )
 
-func healthCheckProtocolEnumValues() []string {
-	return enum.Slice(
+func healthCheckProtocolEnumValues() []awstypes.ProtocolEnum {
+	return enum.EnumSlice(
 		awstypes.ProtocolEnumHttp,
 		awstypes.ProtocolEnumHttps,
 		awstypes.ProtocolEnumTcp,

internal/service/elbv2/target_group.go

@@ -129,7 +129,7 @@ func resourceTargetGroup() *schema.Resource {
 							StateFunc: func(v any) string {
 								return strings.ToUpper(v.(string))
 							},
-							ValidateFunc:     validation.StringInSlice(healthCheckProtocolEnumValues(), true),
+							ValidateFunc:     validation.StringInSlice(enum.Slice(healthCheckProtocolEnumValues()...), true),
 							DiffSuppressFunc: suppressIfTargetType(awstypes.TargetTypeEnumLambda),
 						},
 						names.AttrTimeout: {