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b4d2977 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 | """Behavior-driven Playwright validation for dashboard TTL cache metrics."""
from __future__ import annotations
import json
import os
from pathlib import Path
import pytest
from headroom.dashboard import get_dashboard_html
playwright = pytest.importorskip("playwright.sync_api")
Page = playwright.Page
expect = playwright.expect
sync_playwright = playwright.sync_playwright
def _sample_stats() -> dict:
return {
"cost": {
"savings_usd": 12.34,
"compression_savings_usd": 12.34,
"cache_savings_usd": 5.67,
"cli_tokens_avoided": 0,
},
"requests": {
"total": 128,
"cached": 96,
"rate_limited": 0,
"failed": 0,
"by_provider": {"anthropic": 128},
"by_model": {"claude-opus-4-6": 128},
},
"tokens": {
"input": 245_000,
"output": 88_000,
"saved": 143_000,
"cli_tokens_avoided": 0,
"total_before_compression": 388_000,
"savings_percent": 36.86,
},
"overhead": {"average_ms": 14.2, "min_ms": 4.5, "max_ms": 42.7},
"ttfb": {"average_ms": 1320.0, "min_ms": 420.0, "max_ms": 2900.0},
"latency": {"average_ms": 1510.0, "min_ms": 520.0, "max_ms": 3300.0},
"waste_signals": {"json_bloat": 95_000, "repetition": 48_000},
"savings_history": [
["2026-04-01T00:00:00Z", 12_000],
["2026-04-02T00:00:00Z", 38_000],
["2026-04-03T00:00:00Z", 57_000],
["2026-04-04T00:00:00Z", 102_000],
["2026-04-05T00:00:00Z", 143_000],
],
"persistent_savings": {
"display_session": {},
"lifetime": {"tokens_saved": 143_000, "compression_savings_usd": 12.34},
},
"pipeline_timing": {},
"compression_cache": {"mode": "cache"},
"prefix_cache": {
"by_provider": {
"anthropic": {
"cache_read_tokens": 9_800_000,
"cache_write_tokens": 420_000,
"cache_write_5m_tokens": 185_000,
"cache_write_1h_tokens": 235_000,
"cache_write_5m_requests": 18,
"cache_write_1h_requests": 24,
"requests": 128,
"hit_requests": 96,
"hit_rate": 75.0,
"bust_count": 0,
"bust_write_tokens": 0,
"read_discount": "90%",
"write_premium": "25%",
"savings_usd": 5.67,
"write_premium_usd": 0.42,
"net_savings_usd": 5.67,
"label": "Explicit breakpoints, 5-min TTL",
"observed_ttl_buckets": {
"5m": {"tokens": 185_000, "requests": 18},
"1h": {"tokens": 235_000, "requests": 24},
},
"observed_ttl_mix": {
"5m_pct": 44.0,
"1h_pct": 56.0,
"active_buckets": ["5m", "1h"],
},
}
},
"totals": {
"cache_read_tokens": 9_800_000,
"cache_write_tokens": 420_000,
"cache_write_5m_tokens": 185_000,
"cache_write_1h_tokens": 235_000,
"cache_write_5m_requests": 18,
"cache_write_1h_requests": 24,
"requests": 128,
"hit_requests": 96,
"bust_count": 0,
"bust_write_tokens": 0,
"savings_usd": 5.67,
"write_premium_usd": 0.42,
"net_savings_usd": 5.67,
"hit_rate": 75.0,
"observed_ttl_buckets": {
"5m": {"tokens": 185_000, "requests": 18},
"1h": {"tokens": 235_000, "requests": 24},
},
"observed_ttl_mix": {
"5m_pct": 44.0,
"1h_pct": 56.0,
"active_buckets": ["5m", "1h"],
},
},
"prefix_freeze": {
"busts_avoided": 0,
"tokens_preserved": 0,
"compression_foregone_tokens": 0,
"net_benefit_tokens": 0,
},
"attribution": "Observed provider TTL buckets.",
},
}
def _sample_history() -> dict:
return {
"history": [
{
"timestamp": "2026-04-01T00:00:00Z",
"total_tokens_saved": 12_000,
"compression_savings_usd": 0.6,
},
{
"timestamp": "2026-04-05T00:00:00Z",
"total_tokens_saved": 143_000,
"compression_savings_usd": 12.34,
},
],
"series": {
"daily": [
{
"timestamp": "2026-04-05T00:00:00Z",
"tokens_saved": 20_000,
"total_tokens_saved": 143_000,
"compression_savings_usd_delta": 1.7,
}
],
"weekly": [],
"monthly": [],
},
"lifetime": {"tokens_saved": 143_000, "compression_savings_usd": 12.34},
}
def _install_dashboard_routes(page: Page) -> None:
stats = _sample_stats()
history = _sample_history()
health = {"status": "healthy", "version": "0.3.0"}
dashboard_html = get_dashboard_html()
def handler(route) -> None: # type: ignore[no-untyped-def]
url = route.request.url
if url.endswith("/dashboard") or url == "http://headroom.local/":
route.fulfill(status=200, content_type="text/html", body=dashboard_html)
return
if url.endswith("/stats"):
route.fulfill(status=200, content_type="application/json", body=json.dumps(stats))
return
if "/stats-history" in url:
route.fulfill(
status=200,
content_type="application/json",
body=json.dumps(history),
)
return
if url.endswith("/health"):
route.fulfill(status=200, content_type="application/json", body=json.dumps(health))
return
route.continue_()
page.route("**/*", handler)
def test_dashboard_renders_observed_ttl_metrics_and_can_capture_screenshot() -> None:
artifact_dir = os.environ.get("HEADROOM_PLAYWRIGHT_ARTIFACT_DIR")
with sync_playwright() as pw:
browser = pw.chromium.launch()
page = browser.new_page(viewport={"width": 1720, "height": 1400}, color_scheme="dark")
_install_dashboard_routes(page)
page.goto("http://headroom.local/dashboard", wait_until="load")
expect(page.get_by_text("Observed TTL Buckets")).to_be_visible()
expect(page.get_by_text("Provider-reported cache write mix")).to_be_visible()
expect(page.get_by_test_id("ttl-bucket-headline")).to_have_text("1h leaning")
expect(page.get_by_test_id("ttl-bucket-mix-1h-pct")).to_have_text("1h 56.0%")
expect(page.get_by_test_id("ttl-bucket-mix-5m-pct")).to_have_text("5m 44.0%")
expect(page.get_by_test_id("ttl-bucket-1h-value")).to_have_text("235.0k")
expect(page.get_by_test_id("ttl-bucket-5m-value")).to_have_text("185.0k")
expect(page.get_by_text("TTL 1h 56.0% / 5m 44.0%")).to_be_visible()
screenshot_path = (
Path(artifact_dir) / "dashboard-cache-ttl-main.png"
if artifact_dir
else Path.cwd() / "dashboard-cache-ttl-main.png"
)
screenshot_path.parent.mkdir(parents=True, exist_ok=True)
page.screenshot(path=str(screenshot_path), full_page=True)
browser.close()
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