43 tests, no production change - the module is byte-identical to HEAD.
This lands separately from the split that follows because a split
verified by tests written in the same commit proves nothing: the tests
would have been written against the post-split shape.
Covers every function, and specifically the branches a happy-path test
misses: zero-length window and cpu_count() -> None in _cpu_table,
non-positive RSS and the CPU/pid tie-break in _dedupe_ram, the sibling
truncation boundary in _ram_table, zero total_samples in _gpu_table,
OSError and unparseable MemTotal in _host_profile, and the single-sample
unknown-interval path in _methodology_section and _render_report.
_host_profile is the only impure function; its /proc reads go through a
monkeypatched Path.open and nvidia-smi is stubbed at the _run seam, so
no test touches the disk or forks.
117 stmts / 28 branches, 0 missed. linux_configuration/tests: 100 -> 143
passing. No suppressions: two ANN401s were removed by typing the helper
kwargs explicitly rather than silencing them, and a mypy ignore went away
with a fallback branch no caller reached.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
