* Add test to ensure arch output is not empty
This test ensures that the output of the arch command is non-empty, which is a minimal expectation across all supported architectures.
This helps avoid regressions or edge cases where the command might unexpectedly return an empty string on unsupported or misconfigured platforms.
* Update tests/by-util/test_arch.rs
Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>
* Apply cargo fmt formatting
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Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>