| 1 | // Run: tsx src/__tests__/use-controller-history-live-race.test.tsx |
| 2 | |
| 3 | import { JSDOM } from "jsdom"; |
| 4 | import React, { act } from "react"; |
| 5 | import { createRoot } from "react-dom/client"; |
| 6 | import type { AppBindings } from "../lib/bridge"; |
| 7 | import { initialState, useController } from "../lib/useController"; |
| 8 | import { getTranscriptStore } from "../lib/transcriptStore"; |
| 9 | import { historySliceFromMessages } from "./mockHistorySlice"; |
| 10 | import type { HistorySlice, Meta, TabMeta, WireEvent } from "../lib/types"; |
| 11 | import { installDesktopHostStub } from "./desktopHostStub"; |
| 12 | |
| 13 | let passed = 0; |
| 14 | let failed = 0; |
| 15 | |
| 16 | function ok(value: boolean, label: string) { |
| 17 | if (value) { |
| 18 | process.stdout.write(` PASS ${label}\n`); |
| 19 | passed += 1; |
| 20 | } else { |
| 21 | process.stdout.write(` FAIL ${label}\n`); |
| 22 | failed += 1; |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | function deferred<T>() { |
| 27 | let resolve!: (value: T) => void; |
| 28 | const promise = new Promise<T>((done) => { resolve = done; }); |
| 29 | return { promise, resolve }; |
| 30 | } |
| 31 | |
| 32 | function flushPromises(): Promise<void> { |
| 33 | return new Promise((resolve) => setTimeout(resolve, 0)); |
| 34 | } |
| 35 | |
| 36 | async function waitFor(label: string, predicate: () => boolean) { |
| 37 | for (let attempt = 0; attempt < 30; attempt += 1) { |
| 38 | await act(async () => { await flushPromises(); }); |
| 39 | if (predicate()) return; |
| 40 | } |
| 41 | throw new Error(`timed out waiting for ${label}`); |
| 42 | } |
| 43 | |
| 44 | console.log("\nuse controller history/live race"); |
| 45 | |
| 46 | const dom = new JSDOM("<!doctype html><html><body><div id=\"root\"></div></body></html>", { |
| 47 | pretendToBeVisual: true, |
| 48 | url: "http://localhost/", |
| 49 | }); |
| 50 | (globalThis as typeof globalThis & { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT = true; |
| 51 | globalThis.window = dom.window as unknown as Window & typeof globalThis; |
| 52 | globalThis.document = dom.window.document; |
| 53 | Object.defineProperty(globalThis, "navigator", { configurable: true, value: dom.window.navigator }); |
| 54 | globalThis.Node = dom.window.Node; |
| 55 | globalThis.HTMLElement = dom.window.HTMLElement; |
| 56 | globalThis.Event = dom.window.Event; |
| 57 | globalThis.CustomEvent = dom.window.CustomEvent; |
| 58 | globalThis.KeyboardEvent = dom.window.KeyboardEvent; |
| 59 | globalThis.MouseEvent = dom.window.MouseEvent; |
| 60 | globalThis.localStorage = dom.window.localStorage; |
| 61 | globalThis.requestAnimationFrame = dom.window.requestAnimationFrame.bind(dom.window); |
| 62 | globalThis.cancelAnimationFrame = dom.window.cancelAnimationFrame.bind(dom.window); |
| 63 | |
| 64 | const tab: TabMeta = { |
| 65 | id: "tab-live", |
| 66 | scope: "project", |
| 67 | workspaceRoot: "/repo", |
| 68 | workspaceName: "repo", |
| 69 | workspacePath: "/repo", |
| 70 | topicId: "topic-live", |
| 71 | topicTitle: "General", |
| 72 | sessionPath: "/repo/sessions/live.jsonl", |
| 73 | sessionRevision: 1, |
| 74 | sessionDigest: "digest-v1", |
| 75 | label: "model", |
| 76 | ready: true, |
| 77 | running: false, |
| 78 | mode: "normal", |
| 79 | toolApprovalMode: "ask", |
| 80 | tokenMode: "full", |
| 81 | active: true, |
| 82 | cwd: "/repo", |
| 83 | }; |
| 84 | const meta: Meta = { |
| 85 | label: "model", |
| 86 | ready: true, |
| 87 | eventChannel: "agent:event", |
| 88 | sessionPath: tab.sessionPath, |
| 89 | sessionRevision: tab.sessionRevision, |
| 90 | sessionDigest: tab.sessionDigest, |
| 91 | cwd: "/repo", |
| 92 | workspaceRoot: "/repo", |
| 93 | workspaceName: "repo", |
| 94 | workspacePath: "/repo", |
| 95 | autoApproveTools: false, |
| 96 | bypass: false, |
| 97 | collaborationMode: "normal", |
| 98 | toolApprovalMode: "ask", |
| 99 | tokenMode: "full", |
| 100 | goal: "", |
| 101 | goalStatus: "stopped", |
| 102 | }; |
| 103 | const historyGate = deferred<HistorySlice>(); |
| 104 | let historyStarted = false; |
| 105 | |
| 106 | const desktopStub = installDesktopHostStub(({ |
| 107 | main: { |
| 108 | App: { |
| 109 | ListTabs: async () => [tab], |
| 110 | MetaForTab: async () => meta, |
| 111 | ContextUsageForTab: async () => ({ used: 0, window: 100, sessionTokens: 0 }), |
| 112 | EffortForTab: async () => ({ supported: true, current: "auto", default: "auto", levels: ["auto"] }), |
| 113 | BalanceForTab: async () => ({ available: false, display: "" }), |
| 114 | JobsForTab: async () => [], |
| 115 | CheckpointsForTab: async () => [], |
| 116 | ForkTargetsForTab: async () => ({ targets: [], verifiable: false }), |
| 117 | HistorySliceForTab: async () => { |
| 118 | historyStarted = true; |
| 119 | return historyGate.promise; |
| 120 | }, |
| 121 | HistoryCheckpointTurnsForTab: async () => [], |
| 122 | ReplayPendingPrompts: async () => {}, |
| 123 | } as Partial<AppBindings> as AppBindings, |
| 124 | }, |
| 125 | }).main.App); |
| 126 | |
| 127 | type Controller = ReturnType<typeof useController>; |
| 128 | let controller: Controller | undefined; |
| 129 | let renders = 0; |
| 130 | function Probe() { |
| 131 | renders++; |
| 132 | controller = useController(); |
| 133 | return null; |
| 134 | } |
| 135 | |
| 136 | const rootElement = document.getElementById("root"); |
| 137 | if (!rootElement) throw new Error("missing root"); |
| 138 | const root = createRoot(rootElement); |
| 139 | await act(async () => { |
| 140 | root.render(<Probe />); |
| 141 | await flushPromises(); |
| 142 | }); |
| 143 | await waitFor("history request", () => historyStarted && (desktopStub.events.get("agent:event")?.size ?? 0) > 0); |
| 144 | |
| 145 | await act(async () => { |
| 146 | desktopStub.emit("agent:event", { kind: "turn_started", tabId: tab.id }); |
| 147 | desktopStub.emit("agent:event", { kind: "text", tabId: tab.id, messageId: "active", text: "active prefix" }); |
| 148 | await flushPromises(); |
| 149 | }); |
| 150 | ok(controller?.state.transcriptConnection === "syncing", "frames wait for atomic baseline installation"); |
| 151 | |
| 152 | historyGate.resolve(historySliceFromMessages( |
| 153 | tab.id, |
| 154 | [{ role: "user", content: "stale durable history" }], |
| 155 | { cursor: "", turns: 12 }, |
| 156 | { revision: 1, digest: "digest-v1" }, |
| 157 | )); |
| 158 | await waitFor("hydration completion", () => controller?.state.hydrating === false); |
| 159 | |
| 160 | ok(controller?.state.running ?? false, "late history keeps the live turn running"); |
| 161 | ok(controller?.state.items.some((item) => item.kind === "assistant" && item.streaming) ?? false, "late history keeps the live assistant stream"); |
| 162 | // The page read before the turn started is this session's history, not a |
| 163 | // competing version of it: it goes in front of the live turn instead of |
| 164 | // replacing it, so the turn never streams over a blank transcript. |
| 165 | ok(controller?.state.items[0]?.kind === "user", "late history lands in front of the live turn"); |
| 166 | ok(controller?.state.items.at(-1)?.kind === "assistant", "late history leaves the live turn at the tail"); |
| 167 | |
| 168 | await act(async () => { await flushPromises(); await flushPromises(); }); |
| 169 | const backgroundMeta = { ...meta, sessionPath: "/background", label: "before" }; |
| 170 | getTranscriptStore().setState("background", { ...initialState, meta: backgroundMeta, running: true }); |
| 171 | let backgroundNotifications = 0; |
| 172 | const releaseBackground = getTranscriptStore().subscribeState("background", () => backgroundNotifications++); |
| 173 | const foregroundRenders = renders; |
| 174 | await act(async () => { |
| 175 | desktopStub.emit("tab:meta", { tabId: "background", meta: { ...backgroundMeta, label: "updated" } }); |
| 176 | await flushPromises(); |
| 177 | }); |
| 178 | ok(backgroundNotifications > 0, "background state still reaches its own subscribers"); |
| 179 | ok(getTranscriptStore().states.get("background")?.meta?.label === "updated", "background metadata is published"); |
| 180 | ok(getTranscriptStore().states.get("background")?.running === true, "background task keeps running"); |
| 181 | ok(renders === foregroundRenders, "background structural events do not rerender the foreground controller"); |
| 182 | releaseBackground(); |
| 183 | await act(async () => { root.unmount(); }); |
| 184 | dom.window.close(); |
| 185 | |
| 186 | console.log(`\n${passed} passed, ${failed} failed, ${passed + failed} total`); |
| 187 | if (failed > 0) process.exit(1); |
| 188 |