test: http[s] deprecated-URL coverage
The else
code path was not covered by tests. Adding coverage and
ensuring a single warning is emitted.
Splitting the http and https cases into separate test units to ensure that the process.on('warning') is only called a single time.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
commit message follows commit guidelines