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FabledSteward/tests/plugins/host_agent/test_host_health.py
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bvandeusenandClaude Opus 5.5 2a3af60e99
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test(hosts): render the host_agent fragments whether or not the plugin is enabled (#5122)
The unit app does not register plugin blueprints, so render_template could
not find _host_vitals.html or _host_metrics.html (TemplateNotFound, CI run
8384). tests/_templates.render_plugin_template renders a plugin's template
through the app's own Jinja environment and request context, with the
plugin's template folder ahead of the app's loader.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-06 18:03:17 -04:00

80 lines
4.2 KiB
Python

"""The host page says how the host is in one header, and grades every reading by
Settings → Thresholds, nowhere else (#5122)."""
import re
from datetime import datetime, timedelta, timezone
from types import SimpleNamespace
import pytest
from steward.core.formatting import worst_reading
from steward.core.settings import to_thresholds_cfg
from tests._templates import render_plugin_template
from tests.test_style_tokens import hex_colours
TH = to_thresholds_cfg({}) # cpu/mem/disk warn 80 crit 90; load warn 80 crit 100
@pytest.mark.parametrize("readings, worst", [
([("CPU", 40, "cpu"), ("Memory", 50, "mem")], None),
([("CPU", None, "cpu")], None), # no reading is not a problem
([("CPU", 85, "cpu"), ("Memory", 95, "mem")], ("Memory", 95, "crit")), # crit beats warn
([("CPU", 92, "cpu"), ("Memory", 95, "mem")], ("CPU", 92, "crit")), # first of equals
([("Disk /", 81, "disk")], ("Disk /", 81, "warn")),
])
def test_worst_reading(readings, worst):
assert worst_reading(readings, TH) == worst
async def _vitals(app, *, cpu=40.0, mem=50.0, stale=False, seen_min=1):
readings = (("CPU", cpu, "cpu"), ("Memory", mem, "mem"), ("Disk /", 30.0, "disk"),
("Load per core", 20, "load"))
async with app.test_request_context("/plugins/host_agent/vitals/h1"):
page = await render_plugin_template(
app, "host_agent", "_host_vitals.html", reporting=True, stale=stale,
reg=SimpleNamespace(last_seen_at=datetime.now(timezone.utc) - timedelta(minutes=seen_min),
agent_version="1.9.0"),
cpu=cpu, mem=mem, disk_root=30.0, load_per_core=20,
sparks={"cpu": "", "mem": "", "disk": "", "load": ""},
psi={"cpu": None, "mem": None, "io": None}, worst=worst_reading(readings, TH))
return re.sub(r">\s+<", "><", " ".join(page.split()))
async def test_a_host_over_a_threshold_says_which_reading(app):
page = await _vitals(app, cpu=40.0, mem=93.0)
assert '<span class="badge badge-ok">Live</span>' in page
assert '<span class="tone-crit">Memory 93%</span> is past its critical threshold.' in page
assert 'class="stat-tile stat-crit"><span class="stat-tile-label">Memory</span>' in page
assert 'class="stat-tile stat-ok"><span class="stat-tile-label">CPU</span>' in page
assert "seen <time" in page and "agent v1.9.0" in page
assert not hex_colours(page), hex_colours(page)
async def test_a_quiet_host_says_so(app):
assert "Every reading is within its thresholds." in await _vitals(app)
async def test_a_stale_host_says_since_when_before_any_reading(app):
page = await _vitals(app, mem=93.0, stale=True, seen_min=20)
assert '<span class="badge badge-warn">Stale</span>' in page
assert "No report since <time" in page and ">20m ago</time>; the readings below are from then." in page
assert "past its" not in page # an old reading is not news
async def test_the_metrics_page_grades_by_the_same_cutoffs(app):
# 75 % was amber under the old hard-coded 70/90; Settings → Thresholds says warn at 80.
async with app.test_request_context("/plugins/host_agent/h1/metrics"):
page = await render_plugin_template(
app, "host_agent", "_host_metrics.html", host=SimpleNamespace(address="10.0.0.2"), stale=False,
reg=SimpleNamespace(distro=None, kernel=None, arch=None, agent_version=None,
last_seen_at=datetime.now(timezone.utc)),
hostlvl={"cpu_pct": 75.0, "mem_used_pct": 95.0, "temp_c_max": 72.0},
cores=[(0, 85.0)], nets={}, disks_io={}, temps={"cpu": 90.0},
mounts={"/": {"disk_used_pct": 50.0, "disk_used_bytes": 1, "disk_total_bytes": 2}})
assert 'class="stat-val tone-ok" style="font-size:1.6rem;">75%' in page
assert 'class="stat-val tone-crit" style="font-size:1.6rem;">95%' in page
assert 'class="meter-fill meter-ok" style="width:75.0%;"' in page
assert 'class="meter-fill meter-warn" style="width:85.0%;"' in page # the core
assert 'class="stat-val tone-warn" style="font-size:1.6rem;">72°C' in page
assert '<span class="tone-crit" style="font-variant-numeric:tabular-nums;">90°C' in page
assert not hex_colours(page), hex_colours(page)