diff --git a/supertest/lib/supertest.dart b/supertest/lib/supertest.dart
index cfd8d2ce..10dcba67 100644
--- a/supertest/lib/supertest.dart
+++ b/supertest/lib/supertest.dart
@@ -14,6 +14,24 @@ abstract interface class Tester {
     Object? body,
   });
 
+  Future<http.Response> put(
+    String path, {
+    Map<String, String>? headers,
+    Object? body,
+  });
+
+  Future<http.Response> patch(
+    String path, {
+    Map<String, String>? headers,
+    Object? body,
+  });
+
+  Future<http.Response> delete(
+    String path, {
+    Map<String, String>? headers,
+    Object? body,
+  });
+
   Future<http.Response> get(
     String path, {
     Map<String, String>? headers,
@@ -41,12 +59,36 @@ class _$TesterImpl extends Tester {
     Map<String, String>? headers,
   }) =>
       http.get(getUri(path), headers: headers);
+
+  @override
+  Future<http.Response> delete(
+    String path, {
+    Map<String, String>? headers,
+    Object? body,
+  }) =>
+      http.delete(getUri(path), headers: headers, body: body);
+
+  @override
+  Future<http.Response> patch(
+    String path, {
+    Map<String, String>? headers,
+    Object? body,
+  }) =>
+      http.patch(getUri(path), headers: headers, body: body);
+
+  @override
+  Future<http.Response> put(
+    String path, {
+    Map<String, String>? headers,
+    Object? body,
+  }) =>
+      http.put(getUri(path), headers: headers, body: body);
 }
 
 class TestAgent {
   static _$TesterImpl? _instance;
 
-  static Future<Tester> create<T>(TestApp app) async {
+  static Future<Tester> create(TestApp app) async {
     if (_instance != null) {
       await _instance!._server.close();
       _instance = null;
@@ -77,6 +119,6 @@ Uri getServerUri(HttpServer server) {
 }
 
 Future<Tester> request<T>(T app) async {
-  final tester = await TestAgent.create<T>((app as dynamic).handleRequest);
+  final tester = await TestAgent.create((app as dynamic).handleRequest);
   return tester;
 }
diff --git a/test/http/res.json_test.dart b/test/http/res.json_test.dart
index abdb91ad..7f82e6d9 100644
--- a/test/http/res.json_test.dart
+++ b/test/http/res.json_test.dart
@@ -8,14 +8,11 @@ void main() {
   group('.json(Object)', () {
     test('should not override previous Content-Types', () async {
       final app = Pharaoh().get('/', (req, res) {
-        return res
-            .type(ContentType.parse('application/vnd.example+json'))
-            .json({"hello": "world"});
+        return res.type(ContentType.parse('application/vnd.example+json')).json({"hello": "world"});
       });
 
-      final result = await (await request(app)).get('/');
-      expect(result.headers['content-type'],
-          'application/vnd.example+json; charset=utf-8');
+      final result = await (await request<Pharaoh>(app)).get('/');
+      expect(result.headers['content-type'], 'application/vnd.example+json; charset=utf-8');
       expect(result.statusCode, 200);
       expect(result.body, '{"hello":"world"}');
     });
@@ -26,7 +23,7 @@ void main() {
           next(res.json(null));
         });
 
-        final result = await (await request(app)).get('/');
+        final result = await (await request<Pharaoh>(app)).get('/');
         expect(result.statusCode, 200);
         expect(result.body, 'null');
       });