undefined passes enum test

[Anahkiasen]

I have this:

revalidator.validate({foo: undefined}, {
    properties: {
        foo: {
            enum: ['foo', 'bar'],
            type: 'string',
        },
    },
});

Which doesn't generate any error, surely undefined is not ['foo', 'bar'] nor is it a string, shouldn't this throw an error?

[cwp]

Only if you have required: true in the schema for foo.

[Anahkiasen]

I tried with required but IIRC it passed as well, I had to convert the rule to a pattern: '(foo|bar)' currently. Will double check.