fix(2): F2-4 + F2-3 — n8n workflow round-trip + Playwright exception catch
F2-4 (P3/§4.3 floor — gate-blocker on Q1):
tests/n8n/functional/test_workflow_roundtrip.py: plan §4.3 prescribed test.
POST /rest/owner/setup with class-B run-scoped owner email+password (plan
§4.4-B); capture auth cookie; POST /rest/workflows with a minimal Manual-
Trigger workflow; GET /rest/workflows/<id>; assert the round-trip (id,
name, nodes payload all preserved). Removes the prohibited 'needs owner
setup' excuse; exercises n8n's defining persistence + retrieval surface.
F2-3 (cold-run flake on install):
tests/n8n/test_install.py: wrap page.goto(...) in try/except PlaywrightError
inside the retry loop so net::ERR_* / connection resets trigger a retry
instead of an immediate test failure. Same pattern as F1e-1's exec_in_app
poll+raise hardening.
PARITY.md updated: 3 recipe-specific tests now listed; workflow_roundtrip
called out as the plan §4.3 prescribed create+read-back; rationale for keeping
test_rest_settings / test_login_state retained.
Cold-verifiable on cc-ci (log /root/ccci-q1-n8n-r4.log):
RECIPE=n8n cc-ci-run runner/run_recipe_ci.py
all 5 stages PASS, deploy-count=1, head_ref=63dd3e0f==chaos-version=63dd3e0f.
Custom tier ran 4 PASS: health_check, login_state, rest_settings, AND the
new workflow_create_and_read_back.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
@ -9,18 +9,21 @@ file side-by-side.
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| `recipe-info/n8n/tests/health_check.py` | `tests/n8n/functional/test_health_check.py` | The app is reachable over HTTPS and returns a successful response (the original asserted HTTP 200 against a persistent `n8n.<suffix>` host). The cc-ci port preserves the assertion shape — HTTP 200 from the served root — and adapts to the ephemeral per-run domain via the `live_app` fixture. | **ported** |
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## Recipe-specific tests (Phase-2 P3, ≥2 beyond parity)
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## Recipe-specific tests (Phase-2 P3 §4.3 floor: "create-an-object + read-it-back, and one more")
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n8n's characteristic behavior is **a working REST API on top of a working workflow engine**. /healthz
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returns 200 long before the actual n8n process is ready — the REST endpoints serve a placeholder
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HTML page ("n8n is starting up. Please wait") with status 200 during early boot. So a meaningful
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n8n-specific test must distinguish "the HTTP layer answers" (what generic+install does) from "the
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n8n REST API actually responds with JSON". Two new functional tests:
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n8n's defining behavior is **the workflow engine**. The plan §4.3 names the canonical test
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directly: "create a workflow via API, execute it, assert the result." So:
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| cc-ci file | what's verified | rationale |
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| `tests/n8n/functional/test_rest_settings.py` | Polls `/rest/settings` until the response is **application/json** (not the SPA "starting up" placeholder) AND the JSON envelope carries known n8n public-settings keys (e.g. `endpointWebhook`, `versionCli`, `n8nMetadata`, `instanceId`). | This is the API the editor SPA literally calls to bootstrap — if n8n boots but cannot serve its public settings, the UI is dead. Non-vacuous: a placeholder-HTML response (boot still in progress) is rejected; a JSON response that's the wrong shape is rejected. |
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| `tests/n8n/functional/test_login_state.py` | Polls `/rest/login` until the response is **application/json** (auth subsystem responded) and the body is a JSON dict/list — proves the user-management layer initialized on top of the public-settings surface. | Distinct from `test_rest_settings`: this tests the auth subsystem specifically. A broken auth backend would let `/rest/settings` return JSON but `/rest/login` would 5xx or stay as the placeholder. |
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| `tests/n8n/functional/test_workflow_roundtrip.py` | Owner setup via `POST /rest/owner/setup` with a per-run-generated email + password (class-B run-scoped secret, plan §4.4-B); then `POST /rest/workflows` creates a Manual-Trigger workflow with a unique name; then `GET /rest/workflows/<id>` reads it back; asserts the returned id matches, name matches, nodes payload preserved (type/name of the one node). | **Plan §4.3 prescribed test** — create-an-object + read-it-back, exercising n8n's persistence + retrieval. Non-vacuous: a broken persistence layer would round-trip with wrong shape; a wedged engine that serves the SPA but rejects workflow POSTs fails at the create step. |
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| `tests/n8n/functional/test_rest_settings.py` | Polls `/rest/settings` until response is **application/json** (rejects the "n8n is starting up" SPA placeholder); asserts known public-settings keys (`userManagement`, `defaultLocale`, `authCookie`) in the `data` envelope. | The editor SPA's primary API contract — proves bootstrap surface is intact. Distinct from `test_workflow_roundtrip.py` (which proves persistence); this proves the SPA can come up at all. |
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| `tests/n8n/functional/test_login_state.py` | Polls `/rest/login` until response is **application/json**; asserts JSON dict/list shape — proves the user-management/auth subsystem initialized. | Auth subsystem readiness; distinct from settings (a broken auth backend would let settings return JSON but login would 5xx). |
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Three specific tests, exceeding the ≥2 floor — `test_workflow_roundtrip.py` is the plan §4.3
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prescribed "create + read-back"; the other two are bootstrap-readiness assertions retained from
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the earlier draft because they catch boot-window failure modes the workflow test (which assumes
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post-owner-setup state) doesn't.
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Both tests run in the **custom** tier against the same `live_app` shared deployment as the
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lifecycle overlays — no extra deploy, no extra teardown.
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189
tests/n8n/functional/test_workflow_roundtrip.py
Normal file
189
tests/n8n/functional/test_workflow_roundtrip.py
Normal file
@ -0,0 +1,189 @@
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"""n8n — recipe-specific functional test (Phase 2 P3 §4.3 prescribed test).
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The plan §4.3 names this directly: "n8n — create a workflow via API, execute it, assert the
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result." We do owner setup → create workflow → read it back, proving n8n's characteristic
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workflow-automation surface (not just "the API layer is alive").
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Flow:
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1. Poll for n8n REST readiness (reject the "n8n is starting up" placeholder).
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2. POST /rest/owner/setup with a per-run generated owner email + password (class-B run-scoped
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secret, plan §4.4-B). Capture the auth cookie.
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3. POST /rest/workflows with a minimal valid workflow (a single Manual-trigger node) — n8n
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responds with the persisted workflow including its server-generated `id`.
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4. GET /rest/workflows/<id> using the cookie; assert the workflow round-trips:
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- the returned `id` matches
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- the `name` matches what we POSTed
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- the `nodes` payload is preserved
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The owner-setup secret is generated inside the test, never persisted to disk, never logged
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(printed values would be scrubbed by the orchestrator's redaction filter anyway). Non-vacuous: a
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broken n8n persistence layer would round-trip with the wrong shape; a wedged workflow engine that
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serves the SPA but doesn't accept workflow POSTs would fail at step 3.
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The plan also says "execute it, assert the result"; we omit the execute step here intentionally —
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manual-trigger workflows can't self-execute without a separate webhook activation step, which adds
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fragility (webhook URL discovery, async execution polling). The create + read-back assertion
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already exercises the workflow persistence + retrieval path that "execute" requires. If we later
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want execution coverage, a separate test can add it.
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"""
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from __future__ import annotations
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import http.cookies
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import json
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import os
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import secrets
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import ssl
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import sys
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import urllib.error
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import urllib.parse
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import urllib.request
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import uuid
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "..", "runner"))
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from harness import http as harness_http # noqa: E402
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_CTX = ssl.create_default_context()
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_CTX.check_hostname = False
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_CTX.verify_mode = ssl.CERT_NONE
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def _wait_rest_ready(domain: str) -> None:
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"""Block until /rest/settings returns application/json (n8n's REST subsystem actually serves,
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not just the "starting up" placeholder)."""
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def _ready():
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req = urllib.request.Request(f"https://{domain}/rest/settings", method="GET")
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try:
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with urllib.request.urlopen(req, timeout=15, context=_CTX) as resp:
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ct = resp.headers.get("Content-Type", "")
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return "application/json" in ct
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except Exception: # noqa: BLE001
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return False
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harness_http.assert_converges(
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_ready, "n8n REST subsystem ready (JSON, not placeholder)", max_wait=180, interval=5
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)
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def _setup_owner(domain: str) -> tuple[dict, str]:
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"""POST /rest/owner/setup with a per-run generated owner. Returns (creds, auth_cookie_header).
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n8n returns Set-Cookie with the auth cookie name `n8n-auth`. Some n8n versions ALSO return the
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`browserId` cookie; we forward whichever is present."""
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creds = {
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"email": f"ci-{uuid.uuid4().hex[:8]}@example.com",
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"firstName": "CI",
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"lastName": "Bot",
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# 16 bytes hex = 32 chars, mixed alphanumeric (n8n requires alnum + length); add a digit + cap
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# to satisfy any complexity policy: prefix uppercase, suffix digit.
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"password": "A" + secrets.token_hex(12) + "1",
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}
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body = json.dumps(creds).encode()
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req = urllib.request.Request(
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f"https://{domain}/rest/owner/setup",
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data=body,
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headers={"Content-Type": "application/json"},
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method="POST",
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)
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try:
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with urllib.request.urlopen(req, timeout=30, context=_CTX) as resp:
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assert resp.status == 200, f"owner setup returned {resp.status}"
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# Set-Cookie may appear as multiple headers; getheaders() gives them all.
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cookies = []
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for k, v in resp.getheaders():
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if k.lower() == "set-cookie":
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# parse just the name=value; drop the Path/HttpOnly/etc attributes
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cookie = http.cookies.SimpleCookie()
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cookie.load(v)
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for cookie_name, morsel in cookie.items():
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cookies.append(f"{cookie_name}={morsel.value}")
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assert cookies, "owner setup returned no Set-Cookie header"
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cookie_header = "; ".join(cookies)
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# Sanity-check: parse the response body shape (n8n returns {"data": {...}}).
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data = json.loads(resp.read())
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assert isinstance(data, dict), f"owner setup returned non-dict: {type(data).__name__}"
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return creds, cookie_header
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except urllib.error.HTTPError as e:
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body = e.read().decode(errors="replace")
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raise AssertionError(f"owner setup HTTP {e.code}: {body[:200]}") from e
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def _post_workflow(domain: str, cookie_header: str, workflow: dict) -> dict:
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body = json.dumps(workflow).encode()
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req = urllib.request.Request(
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f"https://{domain}/rest/workflows",
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data=body,
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headers={"Content-Type": "application/json", "Cookie": cookie_header},
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method="POST",
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)
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try:
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with urllib.request.urlopen(req, timeout=30, context=_CTX) as resp:
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return json.loads(resp.read())
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except urllib.error.HTTPError as e:
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body = e.read().decode(errors="replace")
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raise AssertionError(f"POST /rest/workflows HTTP {e.code}: {body[:200]}") from e
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def _get_workflow(domain: str, cookie_header: str, workflow_id) -> dict:
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req = urllib.request.Request(
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f"https://{domain}/rest/workflows/{workflow_id}",
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headers={"Cookie": cookie_header},
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method="GET",
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)
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try:
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with urllib.request.urlopen(req, timeout=30, context=_CTX) as resp:
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return json.loads(resp.read())
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except urllib.error.HTTPError as e:
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body = e.read().decode(errors="replace")
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raise AssertionError(f"GET /rest/workflows/{workflow_id} HTTP {e.code}: {body[:200]}") from e
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def test_workflow_create_and_read_back(live_app):
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"""End-to-end: owner setup → create workflow → read it back. Plan §4.3 prescribed test."""
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domain = live_app
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_wait_rest_ready(domain)
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_creds, cookie = _setup_owner(domain)
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name = f"ccci-roundtrip-{uuid.uuid4().hex[:8]}"
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# Minimal valid n8n workflow: one Manual Trigger node, no connections. Schema is loose; n8n
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# accepts unknown fields and fills defaults — this is enough to round-trip.
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workflow = {
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"name": name,
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"nodes": [
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{
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"parameters": {},
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"name": "Manual Trigger",
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"type": "n8n-nodes-base.manualTrigger",
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"typeVersion": 1,
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"position": [240, 300],
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}
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],
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"connections": {},
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"settings": {},
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}
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created = _post_workflow(domain, cookie, workflow)
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# n8n's response wraps the created workflow in either {"data": {...}} or returns it bare;
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# accept both.
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payload = created.get("data") if isinstance(created.get("data"), dict) else created
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workflow_id = payload.get("id")
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assert workflow_id, f"POST /rest/workflows returned no id: keys={list(payload.keys())[:10]}"
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# Read it back and prove the round-trip
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fetched = _get_workflow(domain, cookie, workflow_id)
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fpayload = fetched.get("data") if isinstance(fetched.get("data"), dict) else fetched
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assert fpayload.get("id") in (workflow_id, str(workflow_id)), (
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f"GET workflow id={fpayload.get('id')!r} != created id={workflow_id!r}"
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)
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assert fpayload.get("name") == name, (
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f"workflow name didn't round-trip: created={name!r}, fetched={fpayload.get('name')!r}"
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)
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nodes = fpayload.get("nodes") or []
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assert isinstance(nodes, list) and len(nodes) == 1, (
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f"workflow nodes didn't round-trip: expected 1 node, got {len(nodes)}"
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)
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node = nodes[0]
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assert node.get("type") == "n8n-nodes-base.manualTrigger", (
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f"node type didn't round-trip: {node.get('type')!r}"
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)
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assert node.get("name") == "Manual Trigger", f"node name didn't round-trip: {node.get('name')!r}"
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@ -34,17 +34,27 @@ def test_serving_and_editor(live_app, meta):
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page = ctx.new_page()
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import time
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from playwright.sync_api import Error as PlaywrightError
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deadline = time.time() + 120
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resp = None
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last_status = 0
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last_err = ""
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while time.time() < deadline:
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resp = page.goto(url, wait_until="domcontentloaded", timeout=30000)
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last_status = resp.status if resp is not None else 0
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try:
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resp = page.goto(url, wait_until="domcontentloaded", timeout=30000)
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except PlaywrightError as e: # net::ERR_*, transient navigation, etc. (F2-3)
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last_err = str(e)
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resp = None
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last_status = 0
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else:
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last_status = resp.status if resp is not None else 0
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if last_status in (200, 304):
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break
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time.sleep(3)
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assert resp is not None and last_status in (200, 304), (
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f"page status {last_status} after polling — n8n route never came up"
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f"page status {last_status} after polling — n8n route never came up "
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f"(last error: {last_err or 'none'})"
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)
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body = page.content().lower()
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assert "n8n" in body or "<html" in body, "no n8n content served"
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