test: add cases for unescape & unescapeBuffer
Increase coverage of querystring:
This test case will cover these lines:
- https://github.com/nodejs/node/blob/4cafa60c99f0d755b1df3a29357e19a92b97eed8/lib/querystring.js#L114
- https://github.com/nodejs/node/blob/4cafa60c99f0d755b1df3a29357e19a92b97eed8/lib/querystring.js#L462
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, querystring