Tutorial: Tips and tricks

Tips and tricks

If an error is thrown from a test or hook and is not captured correctly, use t.wrap() on the innermost function/callback.

this.it('throws error', t => {

    return asyncFn().then(function(){

        throw new Error('this is an uncaught error');

    });


});

if the above error fails to get pinned to the right test case or hook, you can do this:

this.it('throws error', t => {

    return asyncFn().then(t.wrap(function(){   // <<< use t.wrap(fn)

        throw new Error('now this error gets trapped correctly');

    }));


});

and then we guarantee the error will get trapped correctly!