internal/core/adt: add tests for issue 3763
Issue #3763
Signed-off-by: Marcel van Lohuizen <mpvl@gmail.com>
Change-Id: Ib4c4e245654bb88f2ad8db58814c71dfdf538834
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1210976
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>