watch: fix minimum seconds

[Taxrosdev]

If 0.0, it would (and should've) defaulted to 0.1, but if only 0 then it defaulted to 0 (Incorrect behaviour). This PR fixes that.

Added some tests as well :)

[Taxrosdev]

Interesting that unit tests would break (even in the main branch) without the env feature on clap, added to fix unit tests failing.

[cakebaker]

Interesting that unit tests would break (even in the main branch) without the env feature on clap, added to fix unit tests failing.

Good catch! Surprised it's not caught by the compiler when running cargo test --all.

[cakebaker]

Thanks for your PR!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (bf69bef) to head (403830d).
Report is 11 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff     @@
##   main   #435   +/-   ##
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