refactor: rename default property from RequestBody to Payload

BREAKING CHANGE: Rename default property from `RequestBody`  to `Payload`

Author: NelsonBN

src/ModelStateExtensions.cs

@@ -7,7 +7,7 @@ namespace PowerUtils.AspNetCore.ErrorHandler
 {
     internal static class ModelStateExtensions
     {
-        private const string BODY_PROPERTY_NAME = "RequestBody";
+        private const string PAYLOAD_PROPERTY_NAME = "Payload";
 
         public static IDictionary<string, string> MappingModelState(this ModelStateDictionary modelState)
         {
@@ -51,7 +51,7 @@ public static IDictionary<string, string> CheckPayloadTooLargeAndReturnError(thi
 
                 return new Dictionary<string, string>()
                 {
-                    { BODY_PROPERTY_NAME, "MAX:" + maxSize }
+                    { PAYLOAD_PROPERTY_NAME, "MAX:" + maxSize }
                 };
             }
 
@@ -81,12 +81,12 @@ private static (string Property, string Error) _mappingError(string property, st
         {
             if(property == "$")
             {
-                return (BODY_PROPERTY_NAME, "INVALID");
+                return (PAYLOAD_PROPERTY_NAME, "INVALID");
             }
 
             if("A non-empty request body is required.".Equals(error, StringComparison.InvariantCultureIgnoreCase))
             {
-                return (BODY_PROPERTY_NAME, "REQUIRED");
+                return (PAYLOAD_PROPERTY_NAME, "REQUIRED");
             }
 
             return (property, error);

tests/PowerUtils.AspNetCore.ErrorHandler.Tests/Tests/Controllers/FilesControllerTests.cs

@@ -48,7 +48,7 @@ public async Task FileLarge_Send_413()
                 "POST: " + requestUri,
                 new Dictionary<string, string>()
                 {
-                    { "request_body", "MAX:1048576" }
+                    { "payload", "MAX:1048576" }
                 }
             );
         }

tests/PowerUtils.AspNetCore.ErrorHandler.Tests/Tests/Controllers/ModelStateControllerTests.cs

@@ -40,7 +40,7 @@ public async void PostInvalid_Request_400()
                 "POST: " + requestUri,
                 new Dictionary<string, string>()
                 {
-                    { "request_body", "INVALID" }
+                    { "payload", "INVALID" }
                 }
             );
         }
@@ -67,7 +67,7 @@ public async void PostWithoutBody_Request_400()
                 "POST: " + requestUri,
                 new Dictionary<string, string>()
                 {
-                    { "request_body", "REQUIRED" }
+                    { "payload", "REQUIRED" }
                 }
             );
         }