48 lines
1.9 KiB
Python
48 lines
1.9 KiB
Python
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"""G8 -- nightmare mode degrades but does not collapse."""
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import random
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import time
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import pytest
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from harness.config import GATEWAY_URL
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from harness.load import drive
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pytestmark = pytest.mark.pathology
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async def test_nightmare_degrades_but_survives(chaos, manifest, api):
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"""G8: same driver, chaos-clean then chaos-nightmare, 300 requests at
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concurrency 20 each. Nightmare p95 >= 5x clean p95; nightmare error rate
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in [2%, 15%]; >= 80% of requests still return a valid envelope (success or
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a structured error, never a connection reset or empty body);
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GET /api/health/all still responds within 5s during the burst."""
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accounts = manifest["cold_account_ids_sample"] + manifest["hot_account_ids"]
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def url_factory():
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account_id = random.choice(accounts)
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return (f"{GATEWAY_URL}/api/accounts/{account_id}/insights", {})
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await chaos.set_profile("clean")
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clean_report = await drive("GET", url_factory, total=300, concurrency=20, warmup=20)
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await chaos.set_profile("nightmare")
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nightmare_report = await drive("GET", url_factory, total=300, concurrency=20, warmup=20)
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assert nightmare_report.p95 >= 5 * clean_report.p95, (
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f"nightmare p95 not >= 5x clean p95\nclean={clean_report}\nnightmare={nightmare_report}"
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)
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assert 0.02 <= nightmare_report.error_rate <= 0.15, str(nightmare_report)
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valid_requests = nightmare_report.count - nightmare_report.exceptions
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valid_share = valid_requests / nightmare_report.count
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assert valid_share >= 0.80, (
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f"only {valid_requests}/{nightmare_report.count} requests returned a "
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f"valid envelope (no reset/empty body): {nightmare_report}"
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)
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start = time.perf_counter()
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resp = await api.get("/api/health/all")
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elapsed = time.perf_counter() - start
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assert elapsed < 5, f"/api/health/all took {elapsed:.2f}s during the nightmare burst"
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assert resp.status_code == 200
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