261 lines
8.8 KiB
Python
261 lines
8.8 KiB
Python
"""Stable publication is ordered, held by default, and idempotent.
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A green draft publishes when it opted into autopublish, or when a later green
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release needs it resolved. A running older claim blocks only the versions above
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it; already-resolvable older green claims still make progress.
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"""
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import json
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import pytest
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def _claims(*rows):
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return [dict(version=version, state=state, autopublish=autopublish)
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for version, state, autopublish in rows]
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def _flips(steps):
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return [step["flip"] for step in steps if "flip" in step]
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def test_a_sole_green_draft_waits_without_autopublish():
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from scripts.releases.sequencer import plan
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assert plan(_claims(("0.21.5", "green", False)), head="0.21.4") == []
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def test_autopublish_flips_the_current_green_release():
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from scripts.releases.sequencer import plan
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steps = plan(_claims(("0.21.5", "green", True)), head="0.21.4")
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assert _flips(steps) == ["0.21.5"]
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assert steps[-1] == {"advance": "0.21.5"}
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def test_a_newer_green_release_flushes_the_older_waiting_draft():
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from scripts.releases.sequencer import plan
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steps = plan(_claims(
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("0.21.5", "green", False),
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("0.21.6", "green", False),
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), head="0.21.4")
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assert _flips(steps) == ["0.21.5", "0.21.6"]
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assert steps == [
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{"flip": "0.21.5"}, {"advance": "0.21.5"},
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{"flip": "0.21.6"}, {"advance": "0.21.6"},
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]
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def test_a_running_newer_claim_does_not_flush_a_held_draft():
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from scripts.releases.sequencer import plan
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steps = plan(_claims(
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("0.21.5", "green", False),
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("0.21.6", "running", False),
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("0.21.7", "green", True),
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), head="0.21.4")
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assert steps == []
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assert plan(_claims(
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("0.21.5", "running", False),
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("0.21.6", "green", True),
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), head="0.21.4") == []
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assert plan(_claims(
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("0.21.5", "green", False),
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("0.21.6", "published", False),
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), head="0.21.4") == []
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def test_unstarted_claim_waits_for_its_grace_period_before_burning():
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from datetime import datetime, timedelta, timezone
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from scripts.releases.sequencer import classify_runs
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claimed = datetime(2026, 9, 22, 1, 0, tzinfo=timezone.utc)
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assert classify_runs([], claimed_at=claimed, now=claimed + timedelta(minutes=59)) == (
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"running", None,
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)
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assert classify_runs([], claimed_at=claimed, now=claimed + timedelta(hours=1)) == (
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"burned", None,
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)
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def test_failed_run_retries_twice_after_backoff_before_burning():
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from datetime import datetime, timezone
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from scripts.releases.sequencer import classify_runs, retry_due
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now = datetime(2026, 9, 22, 1, 30, tzinfo=timezone.utc)
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failed = {
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"id": 42, "status": "completed", "conclusion": "failure",
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"run_attempt": 1, "updated_at": "2026-09-22T01:14:59Z",
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}
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state, retry = classify_runs([failed])
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assert state == "running"
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assert retry is not None
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assert retry_due([{"version": "0.21.5", "state": state, "retry": retry}], now=now) == [{
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"version": "0.21.5", "run_id": 42, "attempt": 2,
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}]
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newer = dict(retry)
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newer["run_id"] = 43
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assert retry_due([
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{"version": "0.21.5", "state": state, "retry": retry},
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{"version": "0.21.6", "state": state, "retry": newer},
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], now=now) == [{"version": "0.21.5", "run_id": 42, "attempt": 2}]
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failed["run_attempt"] = 2
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state, retry = classify_runs([failed])
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assert retry_due([{"version": "0.21.5", "state": state, "retry": retry}], now=now)[0]["attempt"] == 3
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failed["run_attempt"] = 3
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assert classify_runs([failed]) == ("burned", None)
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def test_a_burned_claim_is_spent_and_skipped():
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from scripts.releases.sequencer import classify_final_release, plan
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assert classify_final_release("v0.21.5", "v0.21.5-rc", None) == ("burned", False)
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steps = plan(_claims(
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("0.21.5", "burned", False),
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("0.21.6", "green", True),
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), head="0.21.4")
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assert _flips(steps) == ["0.21.6"]
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assert steps[-1] == {"advance": "0.21.6"}
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def test_advances_each_published_version_and_ignores_a_later_burned_claim():
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from scripts.releases.sequencer import plan
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assert plan(_claims(
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("0.21.5", "published", False),
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("0.21.6", "published", False),
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), head="0.21.4") == [
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{"advance": "0.21.5"},
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{"advance": "0.21.6"},
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]
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assert plan(_claims(
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("0.21.5", "green", False),
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("0.21.6", "burned", False),
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), head="0.21.4") == []
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def test_explicit_publish_uses_the_same_oldest_first_plan():
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from scripts.releases.sequencer import plan
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assert plan(_claims(
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("0.21.5", "green", False),
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("0.21.6", "green", False),
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), head="0.21.4", requested_version="0.21.6") == [
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{"flip": "0.21.5"},
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{"advance": "0.21.5"},
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{"flip": "0.21.6"},
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{"advance": "0.21.6"},
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]
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def test_published_history_at_or_below_the_head_is_an_idempotent_noop():
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from scripts.releases.sequencer import plan
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assert plan(_claims(
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("0.21.4", "published", False),
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("0.21.5", "green", False),
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), head="0.21.4") == []
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def test_an_unpublished_claim_below_the_head_is_refused():
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from scripts.releases.sequencer import plan
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with pytest.raises(ValueError, match="backwards"):
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plan(_claims(("0.21.4", "green", True)), head="0.21.5")
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def test_reconcile_discovers_custody_flips_then_advances_oldest_first():
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from scripts.releases.sequencer import reconcile
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commit = "a" * 40
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tags = {}
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releases = []
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for index, version in enumerate(("0.21.5", "0.21.6"), start=1):
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claim_tag, tag = f"v{version}-rc", f"v{version}"
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claim_object, final_object = str(index) * 40, str(index + 2) * 40
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claim = {
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"schema": 1, "version": version, "commit": commit,
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"autopublish": False, "claimEpoch": 1_790_000_000 + index,
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}
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final = {
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**claim, "claimTag": claim_tag, "claimTagObject": claim_object,
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"releaseId": index,
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"candidateManifestSha256": "a" * 64,
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"dockerManifestDigest": "sha256:" + "b" * 64,
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}
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tags[claim_tag] = (claim_object, commit, claim)
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tags[tag] = (final_object, commit, final)
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releases.append({
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"id": index, "tag_name": tag, "draft": True, "prerelease": False,
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"published_at": None,
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})
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events = []
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def run(argv):
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if argv[:2] == ["git", "fetch"]:
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return ""
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if argv[:3] == ["git", "ls-remote", "--tags"]:
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return "\n".join(
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f"{sha}\trefs/tags/{tag}\n{target}\trefs/tags/{tag}^{{}}"
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for tag, (sha, target, _message) in tags.items()
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)
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if argv[:2] == ["git", "rev-parse"]:
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return tags[argv[-1].removeprefix("refs/tags/")][0]
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if argv[:3] == ["git", "cat-file", "-t"]:
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return "tag"
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if argv[:3] == ["git", "cat-file", "-p"]:
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epoch = next(message["claimEpoch"] for object_id, _target, message in tags.values()
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if object_id == argv[3])
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return f"tagger Fixture <fixture@example.test> {epoch} +0000\n"
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if argv[:3] == ["git", "tag", "-l"]:
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return json.dumps(tags[argv[3]][2])
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if argv[:4] == ["gh", "api", "--paginate", "--slurp"]:
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if "/releases?" in argv[-1]:
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return json.dumps([releases])
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return json.dumps([{"workflow_runs": []}])
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if argv[:3] == ["gh", "api", "--method"]:
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release_id = int(argv[4].rsplit("/", 1)[1])
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release = next(row for row in releases if row["id"] == release_id)
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release.update(tag_name=f"v0.21.{4 + release_id}", draft=False,
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prerelease=False, published_at="2026-09-22T01:00:00Z")
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events.append(("flip", release["tag_name"]))
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return "{}"
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if argv[:2] == ["gh", "api"] and "/releases/" in argv[2]:
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release_id = int(argv[2].rsplit("/", 1)[1])
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return json.dumps(next(row for row in releases if row["id"] == release_id))
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raise AssertionError(argv)
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head = ["0.21.4"]
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releases[0]["id"] = 99
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assert reconcile(
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{"GITHUB_REPOSITORY": "example/project"},
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run=run, read_head=lambda: head[0], advance_head=lambda _record: None,
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) == []
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releases[0]["id"] = 1
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def advance(record):
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events.append(("advance", record["tag"]))
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head[0] = record["version"]
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steps = reconcile(
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{"GITHUB_REPOSITORY": "example/project", "REQUESTED_VERSION": "0.21.6"},
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run=run, read_head=lambda: head[0], advance_head=advance,
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)
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assert steps == [
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{"flip": "0.21.5"}, {"advance": "0.21.5"},
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{"flip": "0.21.6"}, {"advance": "0.21.6"},
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]
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assert events == [
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("flip", "v0.21.5"), ("advance", "v0.21.5"),
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("flip", "v0.21.6"), ("advance", "v0.21.6"),
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]
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