[quality] test: unit coverage for scripts/compose-e2e-image.sh (new tests/unit/test_compose_e2e_image.py) - #774
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scripts/compose-e2e-image.sh builds the E2E overlay layer FROM the image under test and pushes the composed ref that every suite job boots. It had no test of any kind: it runs only inside e2e.yml, so a regression in it surfaces as a red E2E lane that reads like a product regression. Adds tests/unit/test_compose_e2e_image.py, which executes the script in a hermetic sandbox (fake podman/sudo shims on PATH, throwaway E2E_OVERLAY_DIR, no registry contact) and asserts observed behaviour rather than source text: - argument-count guards exit 2 without invoking podman - a missing overlay Containerfile exits 1 before any build - --build-arg carries the base ref, -t carries the composed ref - -f and the build context both resolve to the overlay directory - build strictly precedes push; a failed build never reaches the registry - a failed push is not swallowed - the composed ref is the final stdout line e2e.yml consumes - the PODMAN default expands as words to 'sudo podman' - refs containing shell metacharacters are passed through unexpanded Verified by mutation: self-referential BASE_IMAGE, dropping set -e, removing the final echo, dropping sudo from the PODMAN default, and loosening the argument-count check are each caught by a failing test. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: sec-check[bot] <sec-check[bot]@users.noreply.github.com>
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This was referenced Aug 31, 2026
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Test Improvement
Adds
tests/unit/test_compose_e2e_image.py— 18 behavioural tests forscripts/compose-e2e-image.sh, which previously had zero coverage.Claimed ground (for open-PR disjointness checks)
tests/unit/test_compose_e2e_image.py(new file, only file in the diff)scripts/compose-e2e-image.shonlyDisjoint from every open testsuite PR: #766 (
generate_skill_index.py,update_coverage_snapshot.py), #768 (offline_boot_steps.py,sudo_rs_steps.py,bctl_steps.py,update_failure_steps.py), #765 (environment.pyquarantine contract), #773 (SSH transport /ssh_config.py), #771 (Containerfile.runner), #751 (screenshot_steps.py), #757 (input-remapper QEMU).Why this script matters
compose-e2e-image.shbuilds the E2E overlay layer FROM the image under test and pushes the composed ref that every suite job boots. It runs only insidee2e.yml, so a regression in it surfaces as a red E2E lane that reads like a product regression rather than a tooling bug.What is asserted
The script is executed in a hermetic sandbox (fake
podman/sudoshims onPATH, throwawayE2E_OVERLAY_DIR, no registry contact), and assertions are on observed argv/exit codes rather than source text:2without invoking podmanContainerfileexits1before any build--build-argcarries the base ref;-tcarries the composed ref-fand the build context both resolve to the overlay directorye2e.ymlconsumesPODMANdefault expands as words tosudo podman(root image store)Verification
Mutation-checked — each of these breaks at least one test: self-referential
BASE_IMAGE, droppingset -e, removing the finalecho, droppingsudofrom thePODMANdefault, loosening$# -ne 2.Full
tests/unit/run is unchanged apart from the new file (pre-existing failures/errors in this environment come from missingbehave/selenium, untouched by this PR).Filed by quality agent (hold-gated mode). Human review required — do not merge automatically.
— hive: agent=quality backend=copilot model=claude-opus-5