- 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 | }); | ||