Linux_post_install/tests/README.md

tests/ — regression test suite

Zero-dependency Bash regression tests for the Linux_post_install repository.

Run

make test          # discover tests/t-*.sh, run everything
./tests/run-tests.sh                     # same
./tests/run-tests.sh t-telegram-auth.sh  # run one file

Exit code is non-zero if any check failed. The suite is designed to be deterministic: tests stub every external dependency they touch (curl, gpg, sudo, systemctl, llama-server, nvidia-smi…) and run against sandbox temp dirs. No network, no sudo, no system changes.

Adding a test

1. Create tests/t-<what>.sh with a run_test() function. set -euo pipefail is already active (the runner re-asserts it); $ROOT is the repo root, $TEST_TMP a per-test temp dir that is cleaned automatically.
2. Use the helpers in tests/test-lib.sh for every assertion: check, check_eq, check_rc, check_contains, check_not_contains, check_file_exists, check_file_absent, test_run / test_run_env, mksandbox, tracked_tree_copy, count_token.
3. If a case cannot run in the current environment (missing binary, missing analyzer), call skip_case "<desc>" "<reason>" — never fake a pass and never silently return.
4. Keep total suite runtime under 90 seconds.

Skip contract (hard)

A test that cannot run must say [SKIP] reason. The runner counts skips in the summary and a file whose run_test() produced zero checks and zero skips is reported as FAIL ("no assertions") — a broken harness can never pass silently.

Suite contents

File	What it verifies
t-ai-server-flags.sh	pos-ai-server ExecStart flag set: defaults, CLI, config, dedupe, one-token-per-flag
t-ai-hf-download.sh	pos ai hf download success + failure honesty (no .hf-meta on partial failure, rc != 0)
t-ai-key-resolution.sh	pos ai API-key contract: provider key > legacy AI_API_KEY fallback > error; leakage guard, env-wins, providers status sync
t-ai-llama-detect.sh	pos ai-server status version detection, "unknown", missing-binary failure
t-unsupported-flags.sh	unsupported-option handling: CLI/config/env hard errors, dropped defaults, word-boundary match
t-systemd-unit.sh	generated unit: one ExecStart, quoted paths, systemd-analyze verify
t-telegram-auth.sh	Telegram listener chat+owner gate and owner-unset fail-closed
t-matrix-auth.sh	Matrix listener room+owner gate and room-unset fail-closed
t-gpg-password.sh	backup passphrase on fd 3 (never argv), plaintext/corrupt cleanup
t-config-precedence.sh	load_env_file contract + CLI > env > file > defaults across tools
t-uninstall-manifest.sh	install.sh ↔ POS_LIBS symmetry, user-unit discovery, marker-driven plugin removal
t-gen-docs-drift.sh	make gen idempotence on a pristine tracked tree (CI drift gate)
t-lint-gate.sh	make lint green on the real tree; planted violations are caught and named
t-install-version.sh	install.sh version gate: match→skip, mismatch→proceed, --force bypass, dry-run variant, flag write, numeric comparison
t-share-mountpoint.sh	share-client ask_mountpoint UX: existing/new/declined/rejected paths, confirm gate, mkdir side effects, non-TTY stdin contract, static n→t guards
t-pos-media-yt.sh	unified pos media yt suite: dispatcher + forwarder resolution, shared yt-lib helpers, yt-mp3/mp4/grab/subtitles flags, dry-run deps, YT_OUT_DIR seam, GRAB_DEFAULT config, negative controls (unsafe-URL no-expansion, --lang en,ar single arg, txt timestamp-stripping)
t-telegram-listener-singleton.sh	Telegram listener single-instance guard: first --run acquires the flock, second --run fails fast with the exact message, lock auto-releases so the next start is clean, --status reports the lock state
t-bank.sh	Command Bank: bank-lib.sh unit tests (add/remove/update/find/get/list/count/valid/extract_params/substitute_params) + pos-bank CLI integration (help, list, add, show, run, remove, params, invalid name)