json matcher selecting 0th element on null array succeeds but should fail.

[davidbkemp]

I would expect the following spec to fail, but it passes:

import org.specs2.matcher.JsonMatchers
import org.specs2.mutable.Specification

class FalsePositiveSpec extends Specification with JsonMatchers {
    "this should fail" in {
      """{"items":null}""" must (/("items") /# 0 / ("id" -> "test"))
  }
}

Interestingly, it does fail (as expected) when you use any index other than 0.

[etorreborre]

Hi @davidbkemp, thanks for reporting this. I think I understand where the issue is coming from. I'll try to fix it over the next few days.

[etorreborre]

@davidbkemp I fixed this issue on main. This is not yet backported to the specs2-4.x branch, which version are you using?

[davidbkemp]

Thank you very much for fixing it. We are currently using version 4.20.0

[etorreborre]

The fix is now published in version 4.20.1

[etorreborre]

I think that 4.20.1 was incorrectly porting the fix. This has been corrected with 4.20.4.