Error when using string.length with empty string: "Invalid < expression: Left and right sides types are differents"

[SamyPesse]

When the rules contain something like:

"bio": {
  ".validate": "newData.isString() && newData.val().length < 100"
}

And testing with a write with "bio": "", targaryen throws an error:

Error: newData.val().length < 100: Invalid < expression: Left and right sides types are differents.

If I test by having a non-empty string for bio, it works.

[dinoboff]

I will test that and try to fix it this weekend, unless someone tackles it first.

[dinoboff]

Here is the test:

./bin/targaryen-specs -a '{"tests": [{
>   "rule": "root.child(\"foo\").val().length < 100",
>   "data": {"foo": ""}
> }]}'

Output:

{ Error: Targaryen and Firebase evaluation of "root.child("foo").val().length < 100" diverges.
spec:
   RuleSpec {
     rule: 'root.child("foo").val().length < 100',
     user: 'unauth',
     wildchildren: undefined,
     data: { foo: '' },
     isValid: true,
     failAtRuntime: false,
     evaluateTo: true },
  targaryen: { isValid: true, failAtRuntime: true, evaluateTo: undefined } }

[dinoboff]

@SamyPesse Thanks finding the bug and reporting it. I will release the 3.0.2 this weekend.

[dinoboff]

@SamyPesse Released (sorry for the delay).