💬 Overrides InterceptorState.toString() (#2247)

Resolves #2226

Author: AlexV525

dio/CHANGELOG.md

@@ -9,6 +9,7 @@ See the [Migration Guide][] for the complete breaking changes list.**
 - Add constructor for `DioExceptionType.badCertificate`.
 - Create type alias `DioMediaType` for `http_parser`'s `MediaType`.
 - Fix the type conversion regression when using `MultipartFile.fromBytes`.
+- Improves `InterceptorState.toString()`.
 
 ## 5.4.3+1
 

dio/lib/src/interceptor.dart

@@ -1,6 +1,6 @@
 part of 'dio_mixin.dart';
 
-/// @nodoc
+/// The result type after handled by the interceptor.
 enum InterceptorResultType {
   next,
   resolve,
@@ -10,12 +10,14 @@ enum InterceptorResultType {
 }
 
 /// Used to pass state between interceptors.
-/// @nodoc
 class InterceptorState<T> {
   const InterceptorState(this.data, [this.type = InterceptorResultType.next]);
 
   final T data;
   final InterceptorResultType type;
+
+  @override
+  String toString() => 'InterceptorState<$T>(type: $type, data: $data)';
 }
 
 abstract class _BaseHandler {

dio/test/interceptor_test.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 
 import 'package:dio/dio.dart';
+import 'package:dio/src/dio_mixin.dart';
 import 'package:dio/src/interceptors/imply_content_type.dart';
 import 'package:test/test.dart';
 
@@ -85,6 +86,20 @@ void main() {
     );
   });
 
+  group('InterceptorState', () {
+    test('toString()', () {
+      final data = DioException(requestOptions: RequestOptions());
+      final state = InterceptorState<DioException>(data);
+      expect(
+        state.toString(),
+        'InterceptorState<DioException>('
+        'type: InterceptorResultType.next, '
+        'data: DioException [unknown]: null'
+        ')',
+      );
+    });
+  });
+
   group('Request Interceptor', () {
     test('interceptor chain', () async {
       final dio = Dio();