tests: shell: Stabilize sets/reset_command_0 test

Timeout/expiry value testing based on seconds is way too fragile,
especially with slow debug kernels. Rewrite the unit to test
minute-based values. This means it is no longer feasible to wait for
values to sufficiently change, so instead specify an 'expires' value
when creating the ruleset and drop the 'sleep' call.

While being at it:

- Combine 'get element' and 'reset element' calls into one, assert the
  relevant (sanitized) line appears twice in output instead of comparing
  with 'diff'.
- Turn comments into 'echo' calls to help debugging if the test fails.

Reported-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Phil Sutter <phil@nwl.cc>

0 files changed, 0 insertions, 0 deletions