Added CBOR fixtures

tests/conftest.py

@@ -53,6 +53,16 @@ def open(self, *args, **kwargs):
         return super().open(*args, **kwargs)
 
 
+class CborClient(FlaskClient):
+    def open(self, *args, **kwargs):
+        kwargs.setdefault(
+            "headers",
+            {"Content-Type": "application/json", "Accept": "application/cbor"},
+        )
+        kwargs.setdefault("content_type", "application/json")
+        return super().open(*args, **kwargs)
+
+
 class SocketClient(FlaskClient):
     def __init__(self, app, response_wrapper, *args, **kwargs):
         super().__init__(app, response_wrapper, *args, **kwargs)
@@ -236,6 +246,17 @@ def client(app):
     return app.test_client()
 
 
+@pytest.fixture
+def cbor_client(app):
+    app.test_client_class = CborClient
+    return app.test_client()
+
+
+@pytest.fixture
+def text_client(app):
+    return app.test_client()
+
+
 @pytest.fixture
 def ws_client(app):
     app.test_client_class = SocketClient