test: refactor the code in test-fs-chmod
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
Description of change
- use const and let instead of var
- use common.mustCall to control functions executions
- use assert.strictEqual instead of assert.equal
- use assert.ifError to handle errors
- use arrow functions
- remove unnecessary variables