test(discourse): version-agnostic official-image assertion
test_head_runs_official_image_not_bitnamilegacy hardcoded the migration-era pin discourse/discourse:3.5.3 and went stale on the first legitimate app bump (2026.7.1, weekly 2026-08-03 — caught by verify run 2: the upgrade converged, head image was discourse/discourse:2026.7.1, only the frozen pin failed). The guarded property is the image FAMILY (official vs bitnamilegacy), not a frozen version — now asserts the discourse/discourse: prefix. Not weakened: the bitnami-leak check + official-prefix check together still assert exactly the migration faithfulness; the concrete head pin is exercised by the deploy.
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@@ -6,7 +6,11 @@ migration was never tested. With the version-specific config removed from the al
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and the dynamic base (last-green/main = bitnamilegacy:3.5.0) deployed only as the *base*, the upgrade
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chaos redeploy must land the PR head UNMODIFIED. This overlay asserts exactly that, post-upgrade:
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1. the running `app` service image IS the official discourse/discourse:3.5.3 — NOT bitnamilegacy;
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1. the running `app` service image IS from the official `discourse/discourse` repository —
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NOT bitnamilegacy. (Version-agnostic since 2026-08-04: the original assertion hardcoded the
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migration-era pin `:3.5.3` and went stale on the first legitimate app bump (2026.7.1, weekly
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2026-08-03). The property this test guards is the IMAGE FAMILY — official vs bitnami — not a
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frozen version; the exact head pin is already exercised by the deploy itself.)
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2. the `sidekiq` service the PR deletes is GONE from the deployed stack.
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If either fails, the head did not really run (the overlay leaked onto it) → RED. Assertion-only,
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@@ -26,8 +30,8 @@ def test_head_runs_official_image_not_bitnamilegacy(live_app):
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f"app image is {image!r} — the bitnamilegacy base leaked onto the PR head "
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"(the version-specific overlay was applied to the head, the prevb bug)"
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)
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assert image.startswith("discourse/discourse:3.5.3"), (
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f"app image is {image!r}, expected the PR head's official discourse/discourse:3.5.3 "
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assert image.startswith("discourse/discourse:"), (
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f"app image is {image!r}, expected the PR head's official discourse/discourse image "
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"— the head's image migration was not exercised"
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)
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