Test that tests resilient mode without custom error handler incorrect

[sdhull]

Calling all knowledgeable Express.js folks!

The test case in this repo that tests resilient mode without a custom error handler should fail (eg, it does IRL when using resilient mode without a custom error handler), but for some reason it passes.

My impression from reading the docs is that the default Express error handler will render the built-in error page when it gets called, which will in turn subvert the resilient behavior.

So you actually must define an error handler like

app.use(function (err, req, res, next) {
  console.error(err.stack)
  next();
})

To essentially ignore the error and allow resilient mode to continue.

But the tests don't reflect that. Are they somehow turning off the default error handler in express?