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fix(frontend): isolate new chat thread messages (#3508)

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* fix(frontend): isolate new chat thread messages

* fix(frontend): keep live messages visible in new chat

* fix(frontend): reset thread-local message refs
This commit is contained in:
zgenu
2026-06-11 22:12:15 +08:00
committed by GitHub
parent b6fbf0d105
commit c733d3c917
5 changed files with 253 additions and 36 deletions
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frontend/tests/e2e/thread-history.spec.ts
+107 -1
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@@ -1,4 +1,4 @@
import { expect, test } from "@playwright/test";
import { expect, test, type Route } from "@playwright/test";
import {
mockLangGraphAPI,
@@ -19,6 +19,9 @@ const THREADS = [
},
];
const DEMO_THREAD_ID = "7cfa5f8f-a2f8-47ad-acbd-da7137baf990";
const SVG_PROMPT_THREAD_ID = "00000000-0000-0000-0000-000000000777";
const SVG_PROMPT_MARKER = "LEAK-STRICT-SVG-PROMPT-SHOULD-DISAPPEAR";
const OPTIMISTIC_PROMPT_MARKER = "LEAK-OPTIMISTIC-SVG-PROMPT-SHOULD-DISAPPEAR";
test.describe("Thread history", () => {
test("sidebar shows existing threads", async ({ page }) => {
@@ -62,6 +65,109 @@ test.describe("Thread history", () => {
).toBeVisible({ timeout: 15_000 });
});
test("new chat does not show previous thread messages after client-side navigation", async ({
page,
}) => {
mockLangGraphAPI(page, {
threads: [
{
thread_id: SVG_PROMPT_THREAD_ID,
title: "SVG artifact prompt",
updated_at: "2025-06-03T12:00:00Z",
messages: [
{
type: "human",
id: "msg-human-svg-prompt",
content: [
{
type: "text",
text: `请严格执行：\n1. 使用 write_file 创建 /mnt/user-data/outputs/shared.svg，内容包含 ${SVG_PROMPT_MARKER}\n2. 最终回复只输出 Markdown 图片。`,
},
],
},
{
type: "ai",
id: "msg-ai-svg-prompt",
content: "![shared artifact](/mnt/user-data/outputs/shared.svg)",
},
],
},
],
});
await page.goto(`/workspace/chats/${SVG_PROMPT_THREAD_ID}`);
await expect(page.getByText(SVG_PROMPT_MARKER)).toBeVisible({
timeout: 15_000,
});
await page.getByRole("link", { name: /new chat/i }).click();
await page.waitForURL("**/workspace/chats/new");
await expect(page.getByText(SVG_PROMPT_MARKER)).toBeHidden();
await expect(page.getByPlaceholder(/how can i assist you/i)).toBeVisible();
});
test("new chat does not show previous optimistic user message after client-side navigation", async ({
page,
}) => {
mockLangGraphAPI(page, {
threads: [
{
thread_id: MOCK_THREAD_ID_2,
title: "Destination conversation",
updated_at: "2025-06-04T12:00:00Z",
},
],
});
const metadataOnlyStream = async (route: Route) => {
const body = [
{
event: "metadata",
data: {
run_id: "00000000-0000-0000-0000-000000000778",
thread_id: MOCK_THREAD_ID,
},
},
{ event: "end", data: {} },
]
.map((e) => `event: ${e.event}\ndata: ${JSON.stringify(e.data)}\n\n`)
.join("");
await route.fulfill({
status: 200,
contentType: "text/event-stream",
body,
});
};
await page.route("**/api/langgraph/runs/stream", metadataOnlyStream);
await page.route(
"**/api/langgraph/threads/*/runs/stream",
metadataOnlyStream,
);
await page.goto("/workspace/chats/new");
const textarea = page.getByPlaceholder(/how can i assist you/i);
await expect(textarea).toBeVisible({ timeout: 15_000 });
await textarea.fill(
`请严格执行：使用 write_file 创建 shared.svg，内容包含 ${OPTIMISTIC_PROMPT_MARKER}。`,
);
await textarea.press("Enter");
await expect(page.getByText(OPTIMISTIC_PROMPT_MARKER)).toBeVisible();
await page.getByText("Destination conversation").click();
await page.waitForURL(`**/workspace/chats/${MOCK_THREAD_ID_2}`);
await expect(page.getByText(OPTIMISTIC_PROMPT_MARKER)).toHaveCount(0);
await page.getByRole("link", { name: /new chat/i }).click();
await page.waitForURL("**/workspace/chats/new");
await expect(page.getByText(OPTIMISTIC_PROMPT_MARKER)).toHaveCount(0);
await expect(page.getByPlaceholder(/how can i assist you/i)).toBeVisible();
});
test("mock thread does not load real backend run history", async ({
page,
}) => {