also store json result in local request

sanic/testing.py

@@ -26,6 +26,7 @@ class SanicTestClient:
                     session, method.lower())(url, *args, **kwargs) as response:
                 try:
                     response.text = await response.text()
+                    response.json = await response.json()
                 except UnicodeDecodeError as e:
                     response.text = None
                 response.body = await response.read()

tests/test_response.py

@@ -9,10 +9,12 @@ import pytest
 from random import choice
 
 from sanic import Sanic
-from sanic.response import HTTPResponse, stream, StreamingHTTPResponse, file, file_stream
+from sanic.response import HTTPResponse, stream, StreamingHTTPResponse, file, file_stream, json
 from sanic.testing import HOST, PORT
 from unittest.mock import MagicMock
 
+JSON_DATA = {'ok': True}
+
 
 
 def test_response_body_not_a_string():
@@ -34,6 +36,24 @@ async def sample_streaming_fn(response):
     response.write('bar')
 
 
+@pytest.fixture
+def json_app():
+    app = Sanic('json')
+
+    @app.route("/")
+    async def test(request):
+        return json(JSON_DATA)
+
+    return app
+
+
+def test_json_response(json_app):
+    from sanic.response import json_dumps
+    request, response = json_app.test_client.get('/')
+    assert response.status == 200
+    assert response.text == json_dumps(JSON_DATA)
+    assert response.json == JSON_DATA
+
 @pytest.fixture
 def streaming_app():
     app = Sanic('streaming')