From 4510336895a3151c05ee9dab074d72f83a09c737 Mon Sep 17 00:00:00 2001
From: "paseo-bot[bot]" <266920839+paseo-bot[bot]@users.noreply.github.com>
Date: Thu, 15 Oct 2026 21:34:16 +0200
Subject: [PATCH] test(app): confirm full history before measuring streaming

---
 packages/app/e2e/browser/agent-stream-smoothness.spec.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/packages/app/e2e/browser/agent-stream-smoothness.spec.ts b/packages/app/e2e/browser/agent-stream-smoothness.spec.ts
index 9f0d02f808..0146582755 100644
--- a/packages/app/e2e/browser/agent-stream-smoothness.spec.ts
+++ b/packages/app/e2e/browser/agent-stream-smoothness.spec.ts
@@ -4,8 +4,9 @@ import { startRunningMockAgent, submitMessage } from "../support/helpers/compose
 import {
   seedLongMockAgentTimeline,
   openAgentTimeline,
-  userScrollsTimelineToHistoryStart,
+  scrollTimelineUntilOlderHistoryIsReachable,
   scrollTimelineToNewestLoadedEdge,
+  expectTimelinePromptVisible,
 } from "../support/helpers/timeline-pagination";
 import {
   sampleStreamFrames,
@@ -118,8 +119,8 @@ agentStreamPerfDescribe("Agent stream smoothness", () => {
     try {
       await openAgentTimeline(page, agent);
       await expect(page.getByRole("textbox", { name: "Message agent..." }).first()).toBeVisible();
-      await userScrollsTimelineToHistoryStart(page);
-      await expect(page.getByTestId("load-older-history-spinner")).toBeHidden();
+      await scrollTimelineUntilOlderHistoryIsReachable(page, agent.oldestPrompt);
+      await expectTimelinePromptVisible(page, agent.oldestPrompt);
       await scrollTimelineToNewestLoadedEdge(page);
       await submitMessage(page, "Stream a long answer after reading older messages.");
       await awaitAssistantMessage(page);