fix(app): stabilize session timeline layout continuity (#34533)

2026-07-02 12:36:47 +10:00
parent f266e829cf
commit 3cf71808c4
57 changed files with 6159 additions and 142 deletions
@@ -0,0 +1,63 @@
+import { expect, type TestInfo } from "@playwright/test"
+import { writeFile } from "node:fs/promises"
+import { analyzeVisualObservations, analyzeVisualTraceByMarker } from "./analyzer"
+import type { VisualPlan } from "./invariant"
+import type { VisualProbeResult } from "./model"
+
+export async function reportVisualStability<RegionName extends string>(
+  testInfo: TestInfo,
+  name: string,
+  result: VisualProbeResult<RegionName>,
+  plan: VisualPlan<RegionName>,
+) {
+  const trace = { markers: result.markers, samples: result.samples }
+  const issues = plan.perMarker
+    ? analyzeVisualTraceByMarker(trace, plan)
+    : analyzeVisualObservations(result.samples, plan)
+  const tracePath = testInfo.outputPath(`${name}-visual-trace.json`)
+  const issuesPath = testInfo.outputPath(`${name}-visual-issues.json`)
+  await writeFile(tracePath, JSON.stringify(trace, null, 2))
+  await writeFile(
+    issuesPath,
+    JSON.stringify({ issues, markers: result.markers, capturedFrameCount: result.frames.length }, null, 2),
+  )
+  await testInfo.attach(`${name}-visual-trace`, { path: tracePath, contentType: "application/json" })
+  await testInfo.attach(`${name}-visual-issues`, { path: issuesPath, contentType: "application/json" })
+  if (issues.length) await attachViolationFrames(testInfo, name, result, issues)
+  expect(issues, `${name}: ${issues.join("\n")}`).toEqual([])
+}
+
+async function attachViolationFrames<RegionName extends string>(
+  testInfo: TestInfo,
+  name: string,
+  result: VisualProbeResult<RegionName>,
+  issues: string[],
+) {
+  if (result.frames.length === 0) return
+  const targets = [
+    ...new Set(
+      issues.flatMap((issue) => {
+        const match = issue.match(/ at (\d+)ms/)
+        if (match) return [Number(match[1])]
+        const marker = result.markers.find((item) => issue.startsWith(`${item.label}:`))
+        return marker ? [marker.at] : []
+      }),
+    ),
+  ].slice(0, 6)
+  for (const [violation, target] of targets.entries()) {
+    const nearest = result.frames.reduce(
+      (best, frame, index) => (Math.abs(frame.at - target) < Math.abs(result.frames[best]!.at - target) ? index : best),
+      0,
+    )
+    for (const [label, index] of [
+      ["before", Math.max(0, nearest - 1)],
+      ["violation", nearest],
+      ["after", Math.min(result.frames.length - 1, nearest + 1)],
+    ] as const) {
+      await testInfo.attach(`${name}-${violation + 1}-${label}-${Math.round(result.frames[index]!.at)}ms`, {
+        body: Buffer.from(result.frames[index]!.data, "base64"),
+        contentType: "image/jpeg",
+      })
+    }
+  }
+}