Schema validation errors not caught by error handler

[NMFR]

Description

Schema validation errors are not caught by error handlers.
I want my application to have a "standard" JSON error format.
For this i register an error handler to format the error response.
Schema validation errors bypass the error handler and do not allow to format the response.

Expected behaviour

HTTP 500
{ "error": 'My custom error format" }

Actual behaviour

HTTP 400
{
  "detail": "1000 is greater than the maximum of 90",
  "status": 400,
  "title": "Validation error",
  "type": "about:blank"
}

Steps to reproduce

application.py:

connexion_app = connexion.App(root_path, specification_dir='src/api/rest')

def handle_connexion_exception(exception):
        return '{ "error": 'My custom error format" }', 500

connexion_app.add_error_handler(ProblemException, handle_connexion_exception)

Cause a openAPI schema error (call an endpoint with invalid JSON).

Additional info:

The culprit seems to be validate_schema https://github.com/zalando/connexion/blob/master/connexion/decorators/validation.py#L188 that does not throw an error and just returns the endpoint response.

[TheBrunoLopes]

Any updates on this? This bug-fix would really come in handy.

[dtkav]

I think this is fixed by #955
Can you try the latest release?

[NMFR]

Fixed