pkg: add some tests that pick defaults in builtins
These tests should not change with an upcoming
CL that to support pkg.Schema.
Issue #2471
Signed-off-by: Marcel van Lohuizen <mpvl@gmail.com>
Change-Id: Ic941ea65432dfdd23743692c1e1efefc8de9da95
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1199623
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>