Added tests for divisibleBy, format: "regex"

[timjb]

Btw, I'm using this test suite in my implementation now.

[Julian]

Fabulous :) glad to hear it's getting some use already, we're getting pretty close to finishing draft 3 at least.

This looks fine, other than that the schema doesn't mandate validating format (and in practice my validator and some of the other ones I know will not fail validation for format at all by default). That said, some people do like it I suppose, so perhaps we should start that optional folder that was mentioned.

Can you move (at least the invalid cases of) format.json to tests/draft3/optional/format.json?

Thanks again.

[Julian]

Awesome. Looks good :) thanks again.