jcwalker3andClaude Opus 4.8
5494696227
Adds `GET /api/v1/system/health`, a structured read-only health surface for
automated readiness checks, and keeps `/health` as the cheap liveness probe.
webui/system_health.py composes a DTO from fail-soft dependency probes: the
control-plane database, the local checkout, and — opt-in via `?deep=1` — live
Gitea reachability, each carrying status, reason, and probe latency. Required
probes drive readiness; the optional Gitea probe can only degrade overall
status, because local inventory stays serveable when the remote is
unreachable. A probe that did not run leaves readiness incomplete rather than
silently passing.
Read-only throughout: the control-plane database is opened through a `mode=ro`
URI because `ControlPlaneDB.__init__` creates directories and runs migrations,
which a health check must never do. No restart or reload control is exposed;
those are Phase 2 and #630 forbids process-kill recovery.
No unproven claims: `stale_runtime.mutation_safe` is true only when the
runtime, checkout, and remote commits are all known and equal, and MCP
namespaces always report `unproven` because a web process cannot exercise the
IDE-managed client path (#543). Probe details are redacted at the browser
boundary — URLs lose userinfo and query strings, credential-shaped text is
masked.
`/health` is expanded additively: every MVP key is retained, plus `started_at`,
`uptime_seconds`, and a pointer to the versioned API. The versioned route
returns 503 when not ready so automation can branch on the status code alone.
Verified at master 9eb0f29: focused file 40 passed / 11 subtests; `-k "webui or
health"` 230 passed / 159 subtests; full suite 4358 passed with the 11
pre-existing master-drift failures unchanged from the clean-master baseline.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
500 lines
20 KiB
Python
500 lines
20 KiB
Python
"""Tests for the read-only system-health API (#634).
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Covers the acceptance criteria directly: a structured payload with readiness
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and a dependency list (AC1), version and uptime when knowable (AC2), stale
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runtime reported without a false mutation-safe claim (AC3), and the healthy /
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degraded-dependency / redaction cases (AC4).
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"""
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import json
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import os
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import sqlite3
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import sys
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import tempfile
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import unittest
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from pathlib import Path
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from unittest import mock
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sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
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from starlette.testclient import TestClient
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import control_plane_db
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from webui.app import create_app
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from webui.deployment_boundary import scan_text_for_client_secrets
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from webui.system_health import (
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API_PATH,
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STATUS_DEGRADED,
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STATUS_DOWN,
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STATUS_OK,
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STATUS_SKIPPED,
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DependencyProbe,
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StaleRuntime,
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assess_stale_runtime,
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clear_probe_cache,
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load_system_health,
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namespace_summaries,
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probe_control_plane_db,
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probe_gitea,
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process_uptime,
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redact,
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redact_url,
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snapshot_to_dict,
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)
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def _probe(name, status, *, required=True, detail="detail", kind="test"):
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return DependencyProbe(
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name=name,
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kind=kind,
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status=status,
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detail=detail,
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required=required,
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latency_ms=1.5,
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metadata={},
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)
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_ALL_HEALTHY = (
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_probe("control_plane_db", STATUS_OK, kind="sqlite"),
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_probe("repository", STATUS_OK, kind="git"),
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_probe("gitea", STATUS_OK, required=False, kind="http"),
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)
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_CLEAN_PARITY = StaleRuntime(
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daemon_head="abc123",
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checkout_head="abc123",
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remote_head="abc123",
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stale=False,
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determinable=True,
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mutation_safe=True,
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reasons=(),
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)
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class CleanParityMixin:
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"""Pin parity for tests about aggregation rather than staleness.
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Without this the assertions depend on the real checkout: a worktree whose
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branch is ahead of its upstream is genuinely stale, which would degrade the
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overall status and make these cases fail for an unrelated reason.
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"""
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def setUp(self):
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super().setUp()
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patcher = mock.patch(
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"webui.system_health.assess_stale_runtime",
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return_value=_CLEAN_PARITY,
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)
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patcher.start()
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self.addCleanup(patcher.stop)
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class TestDependencyAggregation(CleanParityMixin, unittest.TestCase):
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"""AC1 — readiness and dependency list derived from probe results."""
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def test_all_healthy_is_ok_and_ready(self):
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snapshot = load_system_health(probes=_ALL_HEALTHY, daemon_head="abc123")
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self.assertEqual(snapshot.status, STATUS_OK)
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self.assertTrue(snapshot.ready)
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self.assertTrue(snapshot.readiness_complete)
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self.assertEqual(snapshot.readiness_reasons, ())
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self.assertEqual(len(snapshot.dependencies), 3)
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def test_required_dependency_down_blocks_readiness(self):
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probes = (
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_probe("control_plane_db", STATUS_DOWN, detail="file missing", kind="sqlite"),
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_probe("repository", STATUS_OK, kind="git"),
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_probe("gitea", STATUS_OK, required=False, kind="http"),
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)
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snapshot = load_system_health(probes=probes, daemon_head="abc123")
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self.assertEqual(snapshot.status, STATUS_DOWN)
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self.assertFalse(snapshot.ready)
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self.assertTrue(
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any("control_plane_db" in reason for reason in snapshot.readiness_reasons)
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)
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def test_optional_dependency_down_degrades_but_stays_ready(self):
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"""A failing optional probe must not claim the process itself is unready."""
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probes = (
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_probe("control_plane_db", STATUS_OK, kind="sqlite"),
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_probe("repository", STATUS_OK, kind="git"),
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_probe("gitea", STATUS_DOWN, required=False, detail="timeout", kind="http"),
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)
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snapshot = load_system_health(probes=probes, daemon_head="abc123")
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self.assertEqual(snapshot.status, STATUS_DEGRADED)
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self.assertTrue(snapshot.ready)
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self.assertTrue(any("gitea" in reason for reason in snapshot.readiness_reasons))
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def test_unrun_required_probe_leaves_readiness_incomplete(self):
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"""Not probed is not the same as passing."""
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probes = (
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_probe("control_plane_db", STATUS_OK, kind="sqlite"),
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_probe("repository", STATUS_SKIPPED, detail="offline", kind="git"),
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)
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snapshot = load_system_health(probes=probes, daemon_head="abc123")
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self.assertFalse(snapshot.ready)
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self.assertFalse(snapshot.readiness_complete)
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self.assertEqual(snapshot.status, STATUS_DEGRADED)
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def test_skipped_optional_probe_does_not_block_readiness(self):
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probes = (
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_probe("control_plane_db", STATUS_OK, kind="sqlite"),
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_probe("repository", STATUS_OK, kind="git"),
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_probe("gitea", STATUS_SKIPPED, required=False, kind="http"),
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)
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snapshot = load_system_health(probes=probes, daemon_head="abc123")
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self.assertTrue(snapshot.ready)
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self.assertTrue(snapshot.readiness_complete)
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class TestVersionAndUptime(CleanParityMixin, unittest.TestCase):
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"""AC2 — version and uptime present when knowable."""
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def test_uptime_and_start_time_present(self):
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snapshot = load_system_health(probes=_ALL_HEALTHY, daemon_head="abc123")
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self.assertGreaterEqual(snapshot.uptime_seconds, 0.0)
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self.assertIn("T", snapshot.started_at)
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def test_process_uptime_helper_matches_shape(self):
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started_at, uptime = process_uptime()
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self.assertIn("T", started_at)
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self.assertGreaterEqual(uptime, 0.0)
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def test_version_reports_python_and_schema_version(self):
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probes = (
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DependencyProbe(
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name="control_plane_db",
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kind="sqlite",
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status=STATUS_OK,
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detail="ok",
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required=True,
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latency_ms=1.0,
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metadata={"schema_version": control_plane_db.SCHEMA_VERSION},
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),
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_probe("repository", STATUS_OK, kind="git"),
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)
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snapshot = load_system_health(probes=probes, daemon_head="abc123")
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self.assertEqual(
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snapshot.version.control_plane_schema_version,
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control_plane_db.SCHEMA_VERSION,
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)
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self.assertTrue(snapshot.version.python_version)
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def test_version_known_flag_false_when_sha_unavailable(self):
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with mock.patch("webui.system_health._git", return_value=None):
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snapshot = load_system_health(probes=_ALL_HEALTHY, daemon_head="abc")
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self.assertIsNone(snapshot.version.git_sha)
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self.assertFalse(snapshot.version.known)
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class TestStaleRuntime(unittest.TestCase):
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"""AC3 — stale runtime reflected without a false mutation-safe claim."""
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def test_matching_commits_are_mutation_safe(self):
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assessment = assess_stale_runtime(
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Path("/tmp"),
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daemon_head="aaa",
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git_reader=lambda *args: "aaa",
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)
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self.assertFalse(assessment.stale)
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self.assertTrue(assessment.determinable)
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self.assertTrue(assessment.mutation_safe)
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def test_diverged_commits_are_stale_and_not_mutation_safe(self):
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reads = {"HEAD": "aaa", "@{upstream}": "bbb"}
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assessment = assess_stale_runtime(
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Path("/tmp"),
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daemon_head="aaa",
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git_reader=lambda *args: reads.get(args[-1]),
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)
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self.assertTrue(assessment.stale)
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self.assertFalse(assessment.mutation_safe)
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self.assertTrue(assessment.reasons)
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def test_unknown_remote_is_not_mutation_safe(self):
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"""Indeterminate must never read as safe."""
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reads = {"HEAD": "aaa", "@{upstream}": None}
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assessment = assess_stale_runtime(
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Path("/tmp"),
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daemon_head="aaa",
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git_reader=lambda *args: reads.get(args[-1]),
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)
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self.assertFalse(assessment.determinable)
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self.assertFalse(assessment.mutation_safe)
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self.assertFalse(assessment.stale)
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self.assertTrue(
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any("indeterminate" in reason for reason in assessment.reasons)
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)
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def test_unobservable_daemon_head_is_disclosed(self):
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assessment = assess_stale_runtime(
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Path("/tmp"),
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git_reader=lambda *args: "aaa",
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)
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self.assertTrue(
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any("not observable" in reason for reason in assessment.reasons)
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)
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def test_stale_runtime_degrades_overall_status(self):
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reads = {"HEAD": "aaa", "@{upstream}": "bbb"}
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# Pinned rather than inherited: this path uses the default git reader,
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# so the assertion must hold whether or not the suite runs offline.
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with mock.patch.dict(os.environ, {"WEBUI_TEST_OFFLINE": ""}), mock.patch(
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"webui.system_health._git",
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side_effect=lambda repo, *args: reads.get(args[-1]),
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):
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snapshot = load_system_health(probes=_ALL_HEALTHY, daemon_head="aaa")
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self.assertTrue(snapshot.stale_runtime.stale)
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self.assertFalse(snapshot.stale_runtime.mutation_safe)
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self.assertEqual(snapshot.status, STATUS_DEGRADED)
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class TestControlPlaneDbProbe(unittest.TestCase):
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"""The required local dependency, probed read-only."""
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def setUp(self):
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self.tmp = tempfile.TemporaryDirectory()
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self.addCleanup(self.tmp.cleanup)
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self.db_path = str(Path(self.tmp.name) / "control-plane.db")
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def _build_db(self, schema_version):
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conn = sqlite3.connect(self.db_path)
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conn.execute("CREATE TABLE schema_meta (key TEXT PRIMARY KEY, value TEXT)")
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conn.execute("CREATE TABLE leases (lease_id TEXT PRIMARY KEY, status TEXT)")
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conn.execute(
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"INSERT INTO schema_meta(key, value) VALUES ('schema_version', ?)",
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(str(schema_version),),
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)
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conn.execute("INSERT INTO leases(lease_id, status) VALUES ('l1', 'active')")
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conn.commit()
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conn.close()
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def test_missing_database_is_down(self):
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probe = probe_control_plane_db(str(Path(self.tmp.name) / "absent.db"))
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self.assertEqual(probe.status, STATUS_DOWN)
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self.assertTrue(probe.required)
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self.assertIsNotNone(probe.latency_ms)
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def test_matching_schema_is_ok(self):
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self._build_db(control_plane_db.SCHEMA_VERSION)
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probe = probe_control_plane_db(self.db_path)
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self.assertEqual(probe.status, STATUS_OK)
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self.assertEqual(
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probe.metadata["schema_version"], control_plane_db.SCHEMA_VERSION
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)
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self.assertEqual(probe.metadata["active_leases"], 1)
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def test_mismatched_schema_is_degraded(self):
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self._build_db(control_plane_db.SCHEMA_VERSION + 99)
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probe = probe_control_plane_db(self.db_path)
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self.assertEqual(probe.status, STATUS_DEGRADED)
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def test_probe_does_not_create_a_database(self):
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"""A health check must never initialise the substrate it inspects."""
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absent = str(Path(self.tmp.name) / "never-created.db")
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probe_control_plane_db(absent)
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self.assertFalse(Path(absent).exists())
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def test_unreadable_database_is_down_not_raised(self):
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Path(self.db_path).write_text("this is not a sqlite database")
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probe = probe_control_plane_db(self.db_path)
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self.assertEqual(probe.status, STATUS_DOWN)
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class TestRedaction(unittest.TestCase):
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"""AC4 — redaction. No credential-shaped text crosses the boundary."""
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def test_redacts_token_assignment(self):
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cleaned = redact("failed with token=ghp_ABCDEFGHIJKLMNOPQRSTUVWXYZ012345")
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self.assertNotIn("ghp_ABCDEFGHIJKLMNOPQRSTUVWXYZ012345", cleaned)
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self.assertIn("[redacted]", cleaned)
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def test_redacts_authorization_header_text(self):
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cleaned = redact("Authorization: Bearer abcdefghijklmnopqrstuvwxyz123456")
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self.assertNotIn("abcdefghijklmnopqrstuvwxyz123456", cleaned)
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def test_redacts_long_opaque_strings(self):
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cleaned = redact("value 0123456789abcdef0123456789abcdef here")
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self.assertNotIn("0123456789abcdef0123456789abcdef", cleaned)
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def test_url_userinfo_and_query_are_stripped(self):
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cleaned = redact_url("https://user:[email protected]/api/v1?token=xyz")
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self.assertNotIn("secretpass", cleaned)
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self.assertNotIn("token=xyz", cleaned)
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self.assertEqual(cleaned, "https://gitea.example.com/api/v1")
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def test_url_inside_free_text_is_redacted(self):
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cleaned = redact("GET https://u:[email protected]/x?token=abc failed")
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self.assertNotIn("u:p@", cleaned)
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self.assertNotIn("token=abc", cleaned)
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def test_gitea_probe_failure_detail_is_redacted(self):
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boom = RuntimeError(
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"connection refused for https://user:[email protected]/api/v1/version"
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)
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with mock.patch("webui.system_health.get_auth_header", return_value="token x"), \
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mock.patch("webui.system_health.api_request", side_effect=boom):
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probe = probe_gitea("gitea.example.com")
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self.assertEqual(probe.status, STATUS_DOWN)
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self.assertNotIn("hunter2", probe.detail)
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self.assertEqual(scan_text_for_client_secrets(probe.detail), [])
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def test_credential_guard_refusal_is_a_status_not_a_crash(self):
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with mock.patch(
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"webui.system_health.get_auth_header",
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side_effect=RuntimeError("daemon guard refused"),
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):
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probe = probe_gitea("gitea.example.com")
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self.assertEqual(probe.status, STATUS_DEGRADED)
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self.assertFalse(probe.required)
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class TestNamespaceSummaries(unittest.TestCase):
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"""A web process cannot prove IDE namespace health, and must not claim to."""
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def test_every_namespace_reports_unproven(self):
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rows = namespace_summaries()
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self.assertTrue(rows)
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for row in rows:
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with self.subTest(namespace=row["namespace"]):
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self.assertEqual(row["status"], "unproven")
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self.assertFalse(row["ide_namespace_proven"])
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self.assertIn("client_namespace", row["reason"])
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class TestSystemHealthRoutes(CleanParityMixin, unittest.TestCase):
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"""The HTTP surface: versioned path, status codes, read-only guard."""
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def setUp(self):
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super().setUp()
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clear_probe_cache()
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self.addCleanup(clear_probe_cache)
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self.client = TestClient(create_app())
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def _patch_snapshot(self, probes, daemon_head="abc123"):
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snapshot = load_system_health(probes=probes, daemon_head=daemon_head)
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patcher = mock.patch(
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"webui.app.load_system_health",
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return_value=snapshot,
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)
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patcher.start()
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self.addCleanup(patcher.stop)
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return snapshot
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def test_versioned_route_is_registered(self):
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self.assertEqual(API_PATH, "/api/v1/system/health")
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self._patch_snapshot(_ALL_HEALTHY)
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response = self.client.get(API_PATH)
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self.assertEqual(response.status_code, 200)
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def test_healthy_payload_shape(self):
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self._patch_snapshot(_ALL_HEALTHY)
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data = self.client.get(API_PATH).json()
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self.assertEqual(data["status"], STATUS_OK)
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self.assertTrue(data["readiness"]["ready"])
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self.assertTrue(data["readiness"]["complete"])
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self.assertEqual(data["api"], API_PATH)
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self.assertEqual(len(data["dependencies"]), 3)
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for key in ("version", "process", "stale_runtime", "mcp_namespaces"):
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self.assertIn(key, data)
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self.assertIn("uptime_seconds", data["process"])
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self.assertIn("mutation_safe", data["stale_runtime"])
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def test_degraded_dependency_returns_503(self):
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probes = (
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_probe("control_plane_db", STATUS_DOWN, detail="missing", kind="sqlite"),
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_probe("repository", STATUS_OK, kind="git"),
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)
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self._patch_snapshot(probes)
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response = self.client.get(API_PATH)
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self.assertEqual(response.status_code, 503)
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data = response.json()
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self.assertFalse(data["readiness"]["ready"])
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self.assertTrue(data["readiness"]["reasons"])
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def test_dependency_entries_expose_status_and_latency(self):
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self._patch_snapshot(_ALL_HEALTHY)
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data = self.client.get(API_PATH).json()
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names = {entry["name"] for entry in data["dependencies"]}
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self.assertEqual(names, {"control_plane_db", "repository", "gitea"})
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for entry in data["dependencies"]:
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with self.subTest(dependency=entry["name"]):
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self.assertIn("status", entry)
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self.assertIn("required", entry)
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self.assertIn("latency_ms", entry)
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def test_response_body_carries_no_client_secrets(self):
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self._patch_snapshot(_ALL_HEALTHY)
|
|
body = self.client.get(API_PATH).text
|
|
self.assertEqual(scan_text_for_client_secrets(body), [])
|
|
|
|
def test_deep_flag_is_forwarded(self):
|
|
snapshot = load_system_health(probes=_ALL_HEALTHY, daemon_head="abc")
|
|
with mock.patch(
|
|
"webui.app.load_system_health", return_value=snapshot
|
|
) as loader:
|
|
self.client.get(f"{API_PATH}?deep=1")
|
|
loader.assert_called_once_with(deep=True)
|
|
|
|
def test_shallow_is_the_default(self):
|
|
snapshot = load_system_health(probes=_ALL_HEALTHY, daemon_head="abc")
|
|
with mock.patch(
|
|
"webui.app.load_system_health", return_value=snapshot
|
|
) as loader:
|
|
self.client.get(API_PATH)
|
|
loader.assert_called_once_with(deep=False)
|
|
|
|
def test_route_rejects_mutation_methods(self):
|
|
for method in ("POST", "PUT", "PATCH", "DELETE"):
|
|
with self.subTest(method=method):
|
|
response = self.client.request(method, API_PATH)
|
|
self.assertEqual(response.status_code, 405)
|
|
self.assertEqual(response.json()["error"], "read-only-mvp")
|
|
|
|
def test_default_shallow_call_skips_the_network_probe(self):
|
|
"""The expensive probe must not run unless it was asked for."""
|
|
with mock.patch("webui.system_health.probe_gitea") as probe:
|
|
snapshot = load_system_health(deep=False)
|
|
probe.assert_not_called()
|
|
gitea = next(p for p in snapshot.dependencies if p.name == "gitea")
|
|
self.assertEqual(gitea.status, STATUS_SKIPPED)
|
|
|
|
|
|
class TestHealthRouteBackwardCompatibility(unittest.TestCase):
|
|
"""`/health` is expanded additively; MVP consumers must keep working."""
|
|
|
|
def setUp(self):
|
|
self.client = TestClient(create_app())
|
|
|
|
def test_mvp_keys_are_unchanged(self):
|
|
data = self.client.get("/health").json()
|
|
self.assertEqual(data["status"], "ok")
|
|
self.assertEqual(data["service"], "mcp-control-plane-webui")
|
|
self.assertEqual(data["mode"], "read-only-mvp")
|
|
self.assertIn("timestamp", data)
|
|
self.assertEqual(data["deployment"]["mode"], "internal-operator-console")
|
|
|
|
def test_health_points_at_the_versioned_api(self):
|
|
data = self.client.get("/health").json()
|
|
self.assertEqual(data["system_health_api"], API_PATH)
|
|
self.assertIn("uptime_seconds", data)
|
|
self.assertIn("started_at", data)
|
|
|
|
def test_health_runs_no_dependency_probe(self):
|
|
"""Liveness must stay cheap: no probe, no snapshot assembly."""
|
|
with mock.patch("webui.app.load_system_health") as loader:
|
|
response = self.client.get("/health")
|
|
self.assertEqual(response.status_code, 200)
|
|
loader.assert_not_called()
|
|
|
|
|
|
class TestSnapshotSerialisation(CleanParityMixin, unittest.TestCase):
|
|
def test_snapshot_dict_is_json_serialisable(self):
|
|
snapshot = load_system_health(probes=_ALL_HEALTHY, daemon_head="abc123")
|
|
encoded = json.dumps(snapshot_to_dict(snapshot))
|
|
self.assertIn("readiness", encoded)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|