internal/core/adt: add tests for 4011
Issue #4011
Signed-off-by: Marcel van Lohuizen <mpvl@gmail.com>
Change-Id: I0b4026875f6563e6eac5f5f09f8c25951c7b0cc0
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1220038
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>