Increase Context tests coverage (#1279)
Increase Context tests coverage (#1279)

* Test context path.

* Test context handler.

* Test handler error.

* Text context validate.

* Test context query string.

* Test context undefined param.

* Test context request.

* Test context scheme.

* Test context is websocket.

* Test context multipart form params with error.

* Text context bind.

* Text context logger.

* Text context xml response write error.

* Test context real ip.

labstack/echo,labstack/echo