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| 1 | +// @vitest-environment jsdom |
| 2 | +/** |
| 3 | + * SessionTriTrackView.thumbs.test.tsx — #5 的**掠过条**端到端判据（批 6 波 C · T31）。 |
| 4 | + * |
| 5 | + * @ai-context 与两个既有件的分工：`SessionTriTrackView.test.tsx`（T1–T5，批 5）与 |
| 6 | + * `SessionTriTrackView.rail.test.tsx`（T25 的 I1–I5）**一字未改**；本件只加 T31 新增的面 —— |
| 7 | + * ① 三档帧数（1/3/6）与「只取 `thumb/` 级缩略图」；② 帧的取材 = 目标邻域（**单一真源** |
| 8 | + * `screensFor.screensAround`，不是「最前几屏」）；③ 稀疏降级（`image_ref` 全空 / 槽未接线 ⇒ |
| 9 | + * **整条不渲染**，而不是占位或拉伸时间轴）；④ 解析不出 URL 的那一帧同样不占位。 |
| 10 | + * @ai-context 仪器边界：`imageUrl` 用**注入的 spy**（视图侧零 `@tauri-apps` —— 本件不 mock Tauri， |
| 11 | + * 也没有真 `convertFileSrc` 可 mock）；载荷只在 DOM 与 spy 的实参上。⚠️ 视图从 T31 起把 `imageUrl` |
| 12 | + * 当**可选**槽收（既有夹具单参渲染）⇒ 缺它时不出条，这是 T4② 那条「视图零 Tauri」的形态之一。 |
| 13 | + * @ai-context 诚实边界：jsdom **不排版**（尺寸/位置不可判）⇒ 只判 `src`、帧数与结构事实； |
| 14 | + * **「掠过几帧」的观感未测**（本件不声称）。 |
| 15 | + * 副作用：只挂 React 树 + 读写 `localStorage` 的档位记忆（`beforeEach` 清空）。不写盘、不发请求。 |
| 16 | + */ |
| 17 | +import { cleanup, render } from "@testing-library/react"; |
| 18 | +import type { Mock } from "vitest"; |
| 19 | +import { afterEach, beforeEach, describe, expect, it, vi } from "vitest"; |
| 20 | +import type { SessionDetail } from "../../types/session"; |
| 21 | +import { MOTION_INTENSITY_KEY } from "../../motion/intensity"; |
| 22 | +import SessionTriTrackView from "./SessionTriTrackView"; |
| 23 | + |
| 24 | +const URL_OF = (ref: string): string => `asset://injected/${ref}`; |
| 25 | +const STRIP = '[data-testid="session-timerail-thumbs"]'; |
| 26 | +const RAIL = '[data-testid="session-timerail"]'; |
| 27 | +const PLAYHEAD = '[data-testid="session-timerail-playhead"]'; |
| 28 | + |
| 29 | +/** 五屏（10s…50s），每屏都有归档图；屏区间互不重叠 ⇒ 目标落在哪一屏可归因 */ |
| 30 | +function screensOf(refOf: (ms: number) => string | null): SessionDetail["screens"] { |
| 31 | + return [10, 20, 30, 40, 50].map((s) => { |
| 32 | + const ms = s * 1_000; |
| 33 | + return { |
| 34 | + session_id: 1042, |
| 35 | + screen_id: s, |
| 36 | + first_seen_ms: ms, |
| 37 | + last_seen_ms: ms + 900, |
| 38 | + title: null, |
| 39 | + body: [], |
| 40 | + labels: [], |
| 41 | + image_ref: refOf(ms), |
| 42 | + structure: [], |
| 43 | + }; |
| 44 | + }); |
| 45 | +} |
| 46 | +function detailOf(screens: SessionDetail["screens"]): SessionDetail { |
| 47 | + return { |
| 48 | + session: { id: 1042, title: "构图与调色", source_window: "Chrome", started_at: 1_700_000_000_000, ended_at: 1_700_003_800_000, status: "finished", kind: null }, |
| 49 | + segments: [{ id: 9001, session_id: 1042, start_ms: 0, end_ms: 60_000, text: "开场：构图三要素", source: "subtitle", confidence: 0.9 }], |
| 50 | + screens, |
| 51 | + ocr_blocks: [], |
| 52 | + }; |
| 53 | +} |
| 54 | +const FULL: SessionDetail["screens"] = screensOf((ms) => `full/${ms}.webp`); |
| 55 | + |
| 56 | +interface Mounted { |
| 57 | + readonly container: HTMLElement; |
| 58 | + readonly imageUrl: Mock; |
| 59 | +} |
| 60 | +/** 挂载**真实视图**（端到端：视图 → TimeRail → 掠过条 → `screensFor`） */ |
| 61 | +function mount(opts: { readonly screens?: SessionDetail["screens"]; readonly playheadMs?: number | null; readonly wired?: boolean } = {}): Mounted { |
| 62 | + const imageUrl = vi.fn((ref: string | null) => (ref === null ? null : URL_OF(ref))); |
| 63 | + const view = render( |
| 64 | + <SessionTriTrackView |
| 65 | + detail={detailOf(opts.screens ?? FULL)} |
| 66 | + playheadMs={opts.playheadMs === undefined ? 35_000 : opts.playheadMs} |
| 67 | + {...(opts.wired === false ? {} : { imageUrl })} |
| 68 | + />, |
| 69 | + ); |
| 70 | + return { container: view.container, imageUrl }; |
| 71 | +} |
| 72 | +function q(container: HTMLElement, sel: string): HTMLElement { |
| 73 | + const el = container.querySelector(sel); |
| 74 | + if (el === null) throw new Error(`没有渲染出 ${sel}`); |
| 75 | + return el as HTMLElement; |
| 76 | +} |
| 77 | +const srcs = (container: HTMLElement): string[] => [...container.querySelectorAll(`${STRIP} img`)].map((el) => el.getAttribute("src") ?? ""); |
| 78 | + |
| 79 | +beforeEach(() => { |
| 80 | + localStorage.clear(); |
| 81 | +}); |
| 82 | +afterEach(cleanup); |
| 83 | + |
| 84 | +describe("T1 三档帧数 + 只取 `thumb/` 级缩略图（`full/` 是原图，图集可达 115 MB 级）", () => { |
| 85 | + it("standard ⇒ 恰 3 帧、rich ⇒ 恰 6（屏数不足 6 ⇒ 有多少给多少）、eco ⇒ 恰 1；每帧 `src` 都含 `thumb/`（逐序）", () => { |
| 86 | + const expectRefs: Readonly<Record<string, readonly string[]>> = { |
| 87 | + eco: ["thumb/50000.webp"], |
| 88 | + standard: ["thumb/30000.webp", "thumb/40000.webp", "thumb/50000.webp"], |
| 89 | + rich: ["thumb/10000.webp", "thumb/20000.webp", "thumb/30000.webp", "thumb/40000.webp", "thumb/50000.webp"], |
| 90 | + }; |
| 91 | + const counts: number[] = []; |
| 92 | + for (const tier of ["eco", "standard", "rich"] as const) { |
| 93 | + localStorage.setItem(MOTION_INTENSITY_KEY, tier); |
| 94 | + const { container, imageUrl } = mount({ playheadMs: 50_000 }); |
| 95 | + // `imageUrl` 在 render 里调用（同 `SessionCardFlowView`）⇒ 每次重渲都会再调一次，故去重后对拍 |
| 96 | + const asked = [...new Set(imageUrl.mock.calls.map((c) => c[0] as string))]; |
| 97 | + expect(asked, `${tier}：配图槽只许收到 thumb/ 级 ref（逐序）`).toEqual(expectRefs[tier]); |
| 98 | + const shown = srcs(container); |
| 99 | + counts.push(shown.length); |
| 100 | + expect(shown, `${tier}：` + "`src` 逐序 = 注入槽的返回（URL 不在本层拼）").toEqual(expectRefs[tier].map(URL_OF)); |
| 101 | + expect(shown.filter((s) => !s.includes("thumb/")), `${tier}：出现非 thumb/ 的帧 ⇒ 掠过会去拉原图`).toEqual([]); |
| 102 | + expect(q(container, STRIP).dataset.frames, `${tier}：data-frames 与 DOM 一致`).toBe(String(shown.length)); |
| 103 | + cleanup(); |
| 104 | + } |
| 105 | + expect(counts, "三档帧数逐序（1/3/6；rich 受屏数上限约束 ⇒ 5）").toEqual([1, 3, 5]); |
| 106 | + }); |
| 107 | +}); |
| 108 | + |
| 109 | +describe("T2 帧的取材 = 目标邻域（单一真源），不是「最前几屏」", () => { |
| 110 | + it("目标 35s（第 3 屏区间后）⇒ 以第 3 屏结尾的最近 3 屏；目标 5s（早于所有屏）⇒ 只有首屏", () => { |
| 111 | + const near = mount({ playheadMs: 35_000 }); |
| 112 | + expect(srcs(near.container), "35s 的目标邻域 = 10/20/30s 三屏（`screensAround` 的窗口口径）").toEqual([ |
| 113 | + URL_OF("thumb/10000.webp"), |
| 114 | + URL_OF("thumb/20000.webp"), |
| 115 | + URL_OF("thumb/30000.webp"), |
| 116 | + ]); |
| 117 | + expect(q(near.container, STRIP).dataset.frames, "`data-frames` = 实际渲染的帧数（与 DOM 一致）").toBe("3"); |
| 118 | + cleanup(); |
| 119 | + const early = mount({ playheadMs: 5_000 }); |
| 120 | + expect(srcs(early.container), "早于所有屏 ⇒ 锚取最小 first_seen_ms 的那一屏（不是空、也不是全部）").toEqual([URL_OF("thumb/10000.webp")]); |
| 121 | + }); |
| 122 | +}); |
| 123 | + |
| 124 | +describe("T3 稀疏降级：`image_ref` 全空 ⇒ **不出**掠过条（不占位、不拉伸时间轴）", () => { |
| 125 | + it("五屏全无归档图 ⇒ 无条、无 img；但时间轨、播放头与刻度照旧（回跳的落位不受影响）", () => { |
| 126 | + const { container, imageUrl } = mount({ screens: screensOf(() => null) }); |
| 127 | + expect(container.querySelector(STRIP), "没有可用帧却渲染了条（占位/拉伸都会在这里露馅）").toBeNull(); |
| 128 | + expect(imageUrl.mock.calls.length, "`image_ref === null` 不该调用配图槽").toBe(0); |
| 129 | + expect(q(container, RAIL), "降级把时间轨带走了").not.toBeNull(); |
| 130 | + expect(q(container, PLAYHEAD).dataset.ms, "播放头照旧落位（掠过条只是配图面）").toBe("35000"); |
| 131 | + expect(q(container, PLAYHEAD).style.transform, "落终态：位移写出 0（不是不写）").toContain("translate"); |
| 132 | + expect([...container.querySelectorAll("[data-tick-ms]")].length, "刻度尺被带走了").toBeGreaterThan(1); |
| 133 | + cleanup(); |
| 134 | + const none = mount({ screens: [] }); |
| 135 | + expect(none.container.querySelector(STRIP), "空 screens ⇒ 同样不出条").toBeNull(); |
| 136 | + }); |
| 137 | +}); |
| 138 | + |
| 139 | +describe("T4 槽未接线（视图从 T31 起把 `imageUrl` 当可选槽收）⇒ 不出条且不抛", () => { |
| 140 | + it("不传 `imageUrl` ⇒ 三条轨、时间轨、播放头都在，掠过条缺席（既有夹具的单参渲染形态）", () => { |
| 141 | + const { container, imageUrl } = mount({ wired: false }); |
| 142 | + expect(container.querySelector(STRIP), "缺槽却渲染了条").toBeNull(); |
| 143 | + expect(imageUrl.mock.calls.length, "缺槽时不该有配图解析").toBe(0); |
| 144 | + expect([...container.querySelectorAll("[data-track]")].map((el) => el.children.length)).toEqual([1, 5, 0]); |
| 145 | + expect(q(container, PLAYHEAD)).not.toBeNull(); |
| 146 | + }); |
| 147 | +}); |
| 148 | + |
| 149 | +describe("T5 解析不出 URL 的那一帧不占位（`imageUrl` 返回 `null`）", () => { |
| 150 | + it("第 2 屏的 ref 解析失败 ⇒ 帧数 3→2 且逐序少了它（不渲染 `src=null` 的空图）", () => { |
| 151 | + const screens = screensOf((ms) => (ms === 30_000 ? "full/gone.webp" : `full/${ms}.webp`)); |
| 152 | + const imageUrl = vi.fn((ref: string | null) => (ref === "thumb/gone.webp" ? null : ref === null ? null : URL_OF(ref))); |
| 153 | + const { container } = render(<SessionTriTrackView detail={detailOf(screens)} playheadMs={35_000} imageUrl={imageUrl} />); |
| 154 | + expect(srcs(container), "解析不出的一帧被跳过（不是渲染空 src）").toEqual([URL_OF("thumb/10000.webp"), URL_OF("thumb/20000.webp")]); |
| 155 | + expect(q(container, STRIP).dataset.frames).toBe("2"); |
| 156 | + expect(srcs(container).filter((s) => s === "" || s === "null"), "出现空 src").toEqual([]); |
| 157 | + }); |
| 158 | +}); |
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