Tests don't run on MacOS

[sirthias]

The socat available via homebrew on the mac doesn't support setting the baudrate via the b115200 flag, which makes all tests fail with an error like this:

parseopts(): unknown option "b115200"

The work around is a s/b115200/ispeed=115200,ospeed=115200/ across the whole codebase (two locations). With that in place everything works nicely.

Probably the tests should test for the current platform and then use either b115200 (Linux) or ispeed=115200,ospeed=115200 (macOS).

[jodersky]

That's annoying. I'll see if the fix also works on Linux, and if so, change it.

Thanks for bringing this to my attention!

[jodersky]

Unfortunately the fix doesn't work on linux. socat doesn't recognize numbers for ispeed and ospeed, but requires prepending a b.

Does s/b115200/ispeed=b115200,ospeed=b115200/ work on a mac? (note the extra b)

[sirthias]

Nope, unfortunately it doesn't work.
While it passes the command line parser (just as ispeed=foo,ospeed=bar does!) the values are only really set properly without the b prefix.

(I confirmed with -d -d -d -d where it produces log messages indicating the actual values used. Only when I specify the args as plain numbers they actually get set.)