ValidationError is not raised on unknown query parameters

[csirmazbendeguz]

class MySchema(Schema):
    class Meta:
        unknown = RAISE  # ignored by webargs

@app.route(...)
@use_args(MySchema())
def hello_world(args):
    ...

I want webargs to raise a ValidationError when the request has unknown query parameters.

marshmallow-code/marshmallow#524

How can I achieve this?

[sloria]

This is discussed in #267. #420 will address this.