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test/request_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library shelf.request_test;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:shelf/shelf.dart';
@@ skipping 260 matching lines @@
       });
 
       test("throws if path isn't a path boundary", () {
         var uri = Uri.parse('https://test.example.com/static/dir/file.html');
         var request = new Request('GET', uri,
             handlerPath: '/static/', url: Uri.parse('dir/file.html'));
 
         expect(() => request.change(path: 'di'), throwsArgumentError);
       });
     });
+
+    test("allows the original request to be read", () {
+      var request = _request();
+      var changed = request.change();
+
+      expect(request.read().toList(), completion(isEmpty));
+      expect(changed.read, throwsStateError);
+    });
+
+    test("allows the changed request to be read", () {
+      var request = _request();
+      var changed = request.change();
+
+      expect(changed.read().toList(), completion(isEmpty));
+      expect(request.read, throwsStateError);
+    });
+
+    test("allows another changed request to be read", () {
+      var request = _request();
+      var changed1 = request.change();
+      var changed2 = request.change();
+
+      expect(changed2.read().toList(), completion(isEmpty));
+      expect(changed1.read, throwsStateError);
+      expect(request.read, throwsStateError);
+    });
   });
 }