minor: address pr feedbacks, small refactoring and fix

sanic/server.py

@@ -340,7 +340,7 @@ class HttpProtocol(asyncio.Protocol):
             else:
                 self.write_error(
                     HeaderExpectationFailed(
-                        "Unknow Expect: {expect}".format(expect=expect)
+                        "Unknown Expect: {expect}".format(expect=expect)
                     )
                 )
 

tests/test_request_stream.py

@@ -42,8 +42,11 @@ def test_request_stream_method_view(app):
     assert response.text == data
 
 
-def test_request_stream_100_continue(app):
-
+@pytest.mark.parametrize("headers, expect_raise_exception", [
+({"EXPECT": "100-continue"}, False),
+({"EXPECT": "100-continue-extra"}, True),
+])
+def test_request_stream_100_continue(app, headers, expect_raise_exception):
     class SimpleView(HTTPMethodView):
 
         @stream_decorator
@@ -61,29 +64,11 @@ def test_request_stream_100_continue(app):
 
     assert app.is_request_stream is True
 
+    if not expect_raise_exception:
         request, response = app.test_client.post("/method_view", data=data, headers={"EXPECT": "100-continue"})
         assert response.status == 200
         assert response.text == data
-
-
-def test_request_stream_100_continue_raise_HeaderExpectationFailed(app):
-
-    class SimpleView(HTTPMethodView):
-
-        @stream_decorator
-        async def post(self, request):
-            assert isinstance(request.stream, StreamBuffer)
-            result = ""
-            while True:
-                body = await request.stream.read()
-                if body is None:
-                    break
-                result += body.decode("utf-8")
-            return text(result)
-
-    app.add_route(SimpleView.as_view(), "/method_view")
-
-    assert app.is_request_stream is True
+    else:
         with pytest.raises(ValueError) as e:
             app.test_client.post("/method_view", data=data, headers={"EXPECT": "100-continue-extra"})
             assert "Unknow Expect: 100-continue-extra" in str(e)