test: improve code in test-domain-multi
- use common.mustCall to validate functions executions
- remove unnecessary variables
- remove unnecessary assertions
- remove console.log and console.error
- use arrow functions
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
commit message follows commit guidelines
Affected core subsystem(s)
test