- Add paginated thread history with bounded snapshots and replay limits - Trim oversized wire payloads and support progressive mobile history loading
Showing the changes to apps/server/src/orchestration-v2/ThreadStream.test.ts (1 of 43 files). Show all
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| 1 | +import { describe, expect, it } from "vite-plus/test"; | |
| 2 | + | |
| 3 | +import { | |
| 4 | + decideThreadResume, | |
| 5 | + threadReplayEncodedBytes, | |
| 6 | + THREAD_RESUME_MAX_REPLAY_ENCODED_BYTES, | |
| 7 | + THREAD_RESUME_MAX_REPLAY_EVENTS, | |
| 8 | +} from "./ThreadStream.ts"; | |
| 9 | + | |
| 10 | +describe("decideThreadResume", () => { | |
| 11 | + it("replays when the gap is zero", () => { | |
| 12 | + expect( | |
| 13 | + decideThreadResume({ | |
| 14 | + afterSequence: 10, | |
| 15 | + highWater: 10, | |
| 16 | + replayEventCount: 0, | |
| 17 | + replayEncodedBytes: 0, | |
| 18 | + }), | |
| 19 | + ).toEqual({ mode: "replay", afterSequence: 10, throughSequence: 10 }); | |
| 20 | + }); | |
| 21 | + | |
| 22 | + it("replays when the event count is within the bound", () => { | |
| 23 | + expect( | |
| 24 | + decideThreadResume({ | |
| 25 | + afterSequence: 10, | |
| 26 | + highWater: 20_000, | |
| 27 | + replayEventCount: THREAD_RESUME_MAX_REPLAY_EVENTS, | |
| 28 | + replayEncodedBytes: THREAD_RESUME_MAX_REPLAY_ENCODED_BYTES, | |
| 29 | + }), | |
| 30 | + ).toEqual({ | |
| 31 | + mode: "replay", | |
| 32 | + afterSequence: 10, | |
| 33 | + throughSequence: 20_000, | |
| 34 | + }); | |
| 35 | + }); | |
| 36 | + | |
| 37 | + it("falls back to a snapshot when the event count exceeds the bound", () => { | |
| 38 | + expect( | |
| 39 | + decideThreadResume({ | |
| 40 | + afterSequence: 10, | |
| 41 | + highWater: 20_000, | |
| 42 | + replayEventCount: THREAD_RESUME_MAX_REPLAY_EVENTS + 1, | |
| 43 | + replayEncodedBytes: 1, | |
| 44 | + }), | |
| 45 | + ).toEqual({ mode: "snapshot" }); | |
| 46 | + }); | |
| 47 | + | |
| 48 | + it("falls back to a snapshot when encoded replay bytes exceed the bound", () => { | |
| 49 | + expect( | |
| 50 | + decideThreadResume({ | |
| 51 | + afterSequence: 10, | |
| 52 | + highWater: 11, | |
| 53 | + replayEventCount: 1, | |
| 54 | + replayEncodedBytes: THREAD_RESUME_MAX_REPLAY_ENCODED_BYTES + 1, | |
| 55 | + }), | |
| 56 | + ).toEqual({ mode: "snapshot" }); | |
| 57 | + }); | |
| 58 | + | |
| 59 | + it("falls back to a snapshot when the client cursor is ahead of the store", () => { | |
| 60 | + expect( | |
| 61 | + decideThreadResume({ | |
| 62 | + afterSequence: 50, | |
| 63 | + highWater: 40, | |
| 64 | + replayEventCount: 0, | |
| 65 | + replayEncodedBytes: 0, | |
| 66 | + }), | |
| 67 | + ).toEqual({ mode: "snapshot" }); | |
| 68 | + }); | |
| 69 | + | |
| 70 | + it("counts UTF-8 bytes across projected stream items", () => { | |
| 71 | + expect(threadReplayEncodedBytes([{ value: "a" }, { value: "🦊" }])).toBe( | |
| 72 | + Buffer.byteLength('{"value":"a"}', "utf8") + Buffer.byteLength('{"value":"🦊"}', "utf8"), | |
| 73 | + ); | |
| 74 | + }); | |
| 75 | +}); | |