test: improve the code in test-fs-access
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 execution
- use assert.ifError instead of assert.strictEqual for errors
- use arrow functions