Merge pull request 'fix(plausible): register a team so v3 ingests events; widen post-restore health wait' (#17) from fix/plausible-v3-custom-tests into main
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Verified GREEN (level 5/5) on cc-ci against plausible PR head 867ebfaf, twice: once with the SQL fixture, once with the app-native rewrite. Regression sample green.
This commit was merged in pull request #17.
This commit is contained in:
2026-08-11 14:52:06 +00:00
3 changed files with 183 additions and 12 deletions
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# cc-ci test style guide
Rules for writing and changing tests under `tests/`. Read this before any test edit — in particular
before a `/recipe-upgrade <recipe> --with-tests` or `/ci-test-review` fix, where the temptation is to
make a red run green rather than to make the test right.
The tests are the **independent gate** on recipe upgrades. Their value is entirely in being hard to
fool, so every rule below exists to keep them (a) honest and (b) alive across upgrades.
---
## 1. Set up state through the application, not its database
**Order of preference for any fixture that must create state:**
1. **The app's public HTTP API.**
2. **The app's official CLI or release console** (`docker exec … <app-cli>`).
3. **Writing rows into its database — last resort only**, and only with a comment saying which of the
above were tried and why they did not work.
Direct SQL couples the test to the app's *internal schema*, which upgrades are free to change. The
app's own interface is the thing it promises to keep working.
> **Why this rule exists.** `tests/plausible/custom/test_event_tracking.py` used to register its test
> site with `INSERT INTO sites (...)`. That was sufficient for plausible v2. In v3 a site must belong
> to a **team**, and the app silently discards events for a teamless site — `POST /api/event` still
> returns **202** and the row is still in postgres, so the only visible symptom was that nothing ever
> reached ClickHouse. It read as a mysterious ingestion stall and held the recipe RED for six weeks.
>
> The fix was not to also INSERT a team row. It was to stop writing rows: the fixture now calls
> `Plausible.Sites.create/2` through the app's release console, and the app provisions whatever its
> data model currently needs. The same expression works unchanged on v2 (which has no `teams` table
> at all) **and** v3 — not because the test handles both, but because it stopped depending on the
> schema.
When the ideal interface is unavailable, say so in the code. plausible's HTTP provisioning API
(`POST /api/v1/sites`) is gated behind a paid plan and answers `:upgrade_required` on CE, so the test
drops to option 2 and records that in a comment.
## 2. Gate on version rather than writing dual-path fixtures
If a behaviour genuinely only exists from version X, **gate the test on the version** instead of
branching inside it:
```python
pytest.mark.skipif(app_version < (3,), reason="teams were introduced in v3")
```
Do **not** write a fixture that carefully supports both schemas. Version-portable code is harder to
read, harder to trust, and quietly rots once nobody runs the old path.
Corollary: **old tests can simply be deleted** once the fleet has moved past that version. The older
version is only ever exercised through the *upgrade* tier (deploy base → upgrade → assert), so tests
that only make sense for a superseded version are dead weight, not coverage.
Prefer §1 first: an app-level fixture often makes the version difference disappear, and then no gate
is needed at all.
## 3. Never weaken an assertion to turn a run green
There is a hard line between these two, and only the second is allowed as a way out of a red run:
* **Weakening** — relaxing *what* is asserted: dropping a field check, accepting a wider status set,
asserting a 202 ack instead of the stored result, deleting the read-back.
* **Correcting the fixture or the wait** — fixing *how* the test sets up or how long it allows, with
the assertion untouched.
If a test can only pass by asserting less, it has found a real regression. Report it; do not edit it.
## 4. Assert real state, not acknowledgements
An HTTP 202 means "accepted", not "done". Read the effect back out of the system that owns it — the
row in the analytics store, the file on disk, the record in the API — and assert on the values you
sent. plausible's ingestion returns 202 for events it goes on to discard entirely; a test that
stopped at the ack would have been permanently, silently green.
## 5. Derive waits from the recipe's declared readiness, not a guess
A per-recipe `recipe_meta.py` already declares `DEPLOY_TIMEOUT` / `HTTP_TIMEOUT` because someone
measured that app's boot profile. A custom test that hard-codes a shorter window contradicts it and
will flake or fail on a slower version.
Remember the **tier order**: `custom` runs after `backup`/`restore`, which disrupts the datastore and
restarts the app. A window sized for a warm app is not sized for that. plausible's health check
allowed 60s; v3 boots through `sleep 10``createdb``migrate` → cache warmers first.
## 6. Diagnose from the app's own telemetry before touching a test
Before concluding a test is stale, find the app's account of what happened. It is usually definitive
and it stops you fixing the wrong thing. plausible records dropped events in ClickHouse's
`ingest_counters`: `dropped_not_found` with 0 rows before the fix, `buffered` with rows after — that
single counter identified the root cause after the HTTP status had suggested everything was fine.
Prove the diagnosis both ways where you can: same input, broken state → symptom; corrected state →
no symptom.
## 7. Fixtures must be idempotent
A fixture may run against a warm canonical, a restored volume, or a re-run. Creating state must be
safe to repeat — look the object up first and reuse it, rather than assuming a clean database.
## 8. Keep test identities obviously synthetic
Use `ccci-`-prefixed names and `.example` / `.invalid` domains for anything a test creates, so state
it leaves behind is instantly attributable and can never be confused with real data.
---
## Changing a test: the checklist
1. Reproduce the failure and get the **app's own** explanation (§6).
2. Classify: recipe bug, or stale test? Only a stale test justifies a test edit.
3. Fix the **fixture, wait, or setup** — never the assertion (§3).
4. Prefer the app's interface over its database (§1); gate on version rather than branching (§2).
5. Verify green against the recipe PR head with the changed test, plus a regression sample.
6. Say in the commit and PR **what evidence** proves the diagnosis, not just what changed.
+60 -11
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@@ -14,7 +14,11 @@ Both assert real app state (the event reached the analytics store), not just the
plausible only ingests events for *known* sites — the in-memory `sites_cache` gates ingestion and
drops events for unregistered domains (empirically confirmed: an event for an unregistered domain
never appears in events_v2). So each test first registers a site row in the metadata postgres, then
never appears in events_v2). Sites are therefore provisioned through plausible's OWN creation path
rather than by writing rows — under v3 a site must belong to a TEAM, and a teamless site is dropped as
`dropped_not_found` while the POST still acks 202, which reads as a silent ingestion stall. Letting the
app create the site sidesteps that entirely, and works unchanged on v2. So each test first provisions
the site, then
POSTs repeatedly while polling ClickHouse: the sites_cache must refresh to admit the new site and the
event write-buffer must flush to ClickHouse, so the first landing is not instantaneous. Re-POSTing the
same event is safe — we assert the row count is >= 1.
@@ -40,6 +44,10 @@ _UA = (
"(KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
)
# Identity the harness provisions sites under. Ephemeral per-run deploy, never a real account.
_HARNESS_EMAIL = "cc-ci@ci.invalid"
_HARNESS_PW = "ccci-harness-passphrase-2026"
def _ch(domain: str, sql: str) -> str:
"""Run a ClickHouse query against the `plausible_events_db` service; return stdout (stripped)."""
@@ -50,18 +58,59 @@ def _ch(domain: str, sql: str) -> str:
).strip()
# plausible's own provisioning path. Creating a site through the app (rather than INSERTing rows)
# means the app applies whatever its current data model requires — which is what makes this work
# unchanged across the v2→v3 jump, where sites gained a mandatory owning TEAM. Verified on cc-ci
# against BOTH v2.0.0 (no `teams` table at all) and v3.2.1: identical expression, site usable, events
# ingested. See tests/STYLE.md.
#
# The HTTP provisioning API (`POST /api/v1/sites`) would be the first choice, but it is gated behind
# a paid plan — on CE it answers `:upgrade_required` — so the app's release console is the closest
# public interface available here.
_PROVISION_SITE_EXS = """
pw = "__PW__"
email = "__EMAIL__"
user =
case Plausible.Auth.find_user_by(email: email) do
nil ->
{:ok, u} =
Plausible.Auth.User.new(%{name: "cc-ci", email: email, password: pw, password_confirmation: pw})
|> Plausible.Repo.insert()
u
u -> u
end
site = "__SITE__"
result =
case Plausible.Sites.get_by_domain(site) do
nil -> Plausible.Sites.create(user, %{"domain" => site, "timezone" => "UTC"})
s -> {:ok, s}
end
case result do
{:ok, _} -> IO.puts("CCCI_SITE_OK " <> site)
other -> IO.puts("CCCI_SITE_ERR " <> inspect(other))
end
"""
def _register_site(domain: str, site: str) -> None:
"""Insert a site row into the metadata postgres (`db` service) so plausible will ingest events for
it. Idempotent (ON CONFLICT DO NOTHING)."""
sql = (
"INSERT INTO sites (domain, timezone, inserted_at, updated_at, native_stats_start_at) "
f"VALUES ('{site}','UTC', now(), now(), now()) ON CONFLICT (domain) DO NOTHING; "
f"SELECT domain FROM sites WHERE domain = '{site}';"
"""Provision `site` via plausible's own site-creation path, so it is a site the app will ingest for.
Idempotent: an existing domain is reused rather than re-created.
Do NOT reach into postgres to do this. A `sites` INSERT was enough under v2, but v3 requires the
site to belong to a TEAM and silently discards events for a teamless site — `POST /api/event`
still acks 202 and the row still exists, so the only symptom is that nothing reaches ClickHouse
(ClickHouse's own `ingest_counters` records it as `dropped_not_found`). That is what put this
recipe RED on build 1224. Going through the app removes the whole class of problem: it provisions
the team itself.
"""
exs = (
_PROVISION_SITE_EXS.replace("__PW__", _HARNESS_PW)
.replace("__EMAIL__", _HARNESS_EMAIL)
.replace("__SITE__", site)
)
out = lifecycle.exec_in_app(
domain, ["psql", "-q", "-U", "plausible", "-d", "plausible", "-tAc", sql], service="db"
).strip()
assert out == site, f"site {site!r} not registered in postgres (got {out!r})"
out = lifecycle.exec_in_app(domain, ["/app/bin/plausible", "rpc", exs], service="app")
assert f"CCCI_SITE_OK {site}" in out, f"could not provision site {site!r} via the app: {out.strip()[-400:]}"
def _post_event(base_domain: str, site: str, name: str, pathname: str) -> int:
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@@ -17,6 +17,12 @@ def test_plausible_root_serves(live_app):
62-char SECRET_KEY_BASE, see recipe_meta.EXTRA_ENV); the dedicated
/api/health endpoint is.
"""
# The custom tier runs AFTER the backup/restore tier, which disrupts postgres under the app and
# restarts it. v3 (community-edition) then boots through `sleep 10` + `db createdb` + `db migrate`
# + cache warmers before /api/health flips to 200, which does not fit in 60s — that is what put
# this recipe RED on build 1224 while install/upgrade/backup/restore all passed. The assertion is
# unchanged (still a hard 200 from the real readiness endpoint); only the wait matches the boot
# profile the recipe already declares via recipe_meta.HTTP_TIMEOUT (1200).
url = f"https://{live_app}/api/health"
status, _ = harness_http.retry_http_get(url, expect_status=(200,), max_wait=60, interval=3)
status, _ = harness_http.retry_http_get(url, expect_status=(200,), max_wait=300, interval=5)
assert status == 200, f"GET {url} HTTP {status}"