A fair bit of setup / teardown code was being duplicated in many
test cases in the socketpair testsuite.
Take advantage of the `setup()`, `before()`, and `after()`
functions in the new ZTest API.
Signed-off-by: Christopher Friedt <cfriedt@meta.com>
The `fcntl()` call (`zsock_fcntl()`) does not seem to work
properly (specifically with `CONFIG_ARCH_POSIX`). This will
be resolved in subsequent work harmonizing the networking
subsystem and POSIX library.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
Wow, this testsuite was really celebrating some redundancy
before.
While that is sometimes a good thing, it's also sometimes
better to be more concise.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
