feat: 0.9.0 忽略规则、增量缓存跨会话持久化、快照基线、字符级预算自适应与性能基准E2E - 忽略规则（gitignore简化子集：目录整树剪枝不枚举不计数、扩展名通配与名字匹配、随偏好持久化）、扫描增量缓存落盘userData跨会话自动注入（LRU 8对、防御性解析、渲染端零改动）、快照基线（保存/加载JSON对照六类状态变迁统计与条目标注、对照随重扫刷新、报告附快照口径）、字符级变更组预算随输入规模自适应（下限与固定值一致小输入零变化、大输入按总组流半数放宽上限100万封顶）、大文件性能基准E2E（5万行<15s与300KB GBK<10s耗时断言）+新功能E2E、文档与版本号同步
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@@ -388,6 +388,141 @@ test.describe('文件夹对比（主进程真实扫描链路）', () => {
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await removeTmpDir(root)
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}
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})
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test('忽略规则：目录整树剪枝不参与对比（应用后重扫）', async () => {
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const root = await makeTmpDir('difflens-e2e-ignore-')
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try {
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const leftDir = join(root, 'left')
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const rightDir = join(root, 'right')
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const { mkdir, writeFile: wf } = await import('fs/promises')
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await mkdir(join(leftDir, 'node_modules', 'pkg'), { recursive: true })
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await mkdir(join(rightDir, 'node_modules', 'pkg'), { recursive: true })
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await wf(join(leftDir, 'keep.txt'), 'identical')
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await wf(join(rightDir, 'keep.txt'), 'identical')
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await wf(join(leftDir, 'node_modules', 'pkg', 'x.js'), 'left')
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await wf(join(rightDir, 'node_modules', 'pkg', 'x.js'), 'right')
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const { app, window } = await launchApp()
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await stubOpenDialogSeq(app, [[leftDir], [rightDir]])
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await window.getByRole('button', { name: '对比文件夹' }).click()
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// 无规则：node_modules 内差异文件参与对比
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await expect(window.getByText('不同 1')).toBeVisible()
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await expect(window.getByText('x.js')).toBeVisible()
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// 应用忽略规则：node_modules/ 整树剪枝
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await window.getByRole('button', { name: '忽略规则' }).click()
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await window.getByPlaceholder(/每行一条/).fill('node_modules/')
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await window.getByText('应用并重扫').click()
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// 重扫完成：无差异（keep.txt 一致，node_modules 被忽略）
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await expect(window.getByText('不同 0')).toBeVisible()
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await expect(window.getByText('没有差异文件（两侧内容全部一致）')).toBeVisible()
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await expect(window.getByText('x.js')).toHaveCount(0)
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await app.close()
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} finally {
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await removeTmpDir(root)
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}
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})
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test('增量缓存跨会话持久化：落盘文件存在且重启后重扫正确', async () => {
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const root = await makeTmpDir('difflens-e2e-cachestore-')
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try {
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const leftDir = join(root, 'left')
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const rightDir = join(root, 'right')
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const { mkdir, writeFile: wf } = await import('fs/promises')
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await mkdir(leftDir, { recursive: true })
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await mkdir(rightDir, { recursive: true })
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await wf(join(leftDir, 'same.txt'), 'identical')
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await wf(join(rightDir, 'same.txt'), 'identical')
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await wf(join(leftDir, 'diff.txt'), 'left v1')
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await wf(join(rightDir, 'diff.txt'), 'right v1')
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// 第一实例：扫描后缓存异步落盘 userData/scan-cache.json
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const first = await launchApp()
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await stubOpenDialogSeq(first.app, [[leftDir], [rightDir]])
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await first.window.getByRole('button', { name: '对比文件夹' }).click()
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await expect(first.window.getByText('相同 1')).toBeVisible()
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const cachePath = await first.app.evaluate(({ app }) => app.getPath('userData')).then(
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(userData) => join(userData, 'scan-cache.json')
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)
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await first.app.close()
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// 落盘文件存在且含本目录对的缓存条目（等待异步写盘完成）
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let raw = ''
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for (let i = 0; i < 20; i++) {
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raw = await readFile(cachePath, 'utf-8').catch(() => '')
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if (raw.includes('same.txt')) break
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await new Promise((r) => setTimeout(r, 200))
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}
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expect(raw).toContain('same.txt')
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expect(raw).toContain('diff.txt')
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// 结构为合法存储（版本 + 目录对键）
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const stored = JSON.parse(raw)
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expect(stored.version).toBe(1)
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expect(Object.keys(stored.pairs).length).toBeGreaterThanOrEqual(1)
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// 第二实例（同 userData，渲染端无内存缓存）：主进程注入盘上缓存，重扫结果正确
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const second = await launchApp({ fresh: false })
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await stubOpenDialogSeq(second.app, [[leftDir], [rightDir]])
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await second.window.getByRole('button', { name: '对比文件夹' }).click()
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await expect(second.window.getByText('相同 1')).toBeVisible()
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await expect(second.window.getByText('不同 1')).toBeVisible()
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await second.app.close()
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} finally {
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await removeTmpDir(root)
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}
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})
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test('快照基线：保存后修复差异并新增文件，加载快照对照变迁', async () => {
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const root = await makeTmpDir('difflens-e2e-snapshot-')
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try {
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const leftDir = join(root, 'left')
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const rightDir = join(root, 'right')
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const { mkdir, writeFile: wf } = await import('fs/promises')
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await mkdir(leftDir, { recursive: true })
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await mkdir(rightDir, { recursive: true })
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await wf(join(leftDir, 'same.txt'), 'identical')
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await wf(join(rightDir, 'same.txt'), 'identical')
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await wf(join(leftDir, 'diff.txt'), 'left v1')
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await wf(join(rightDir, 'diff.txt'), 'right v1')
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const { app, window } = await launchApp()
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await stubOpenDialogSeq(app, [[leftDir], [rightDir]])
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await window.getByRole('button', { name: '对比文件夹' }).click()
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await expect(window.getByText('相同 1')).toBeVisible()
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await expect(window.getByText('不同 1')).toBeVisible()
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// 保存快照（真实写盘）
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const snapPath = join(root, 'baseline.json')
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await stubSaveDialog(app, snapPath)
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await window.getByRole('button', { name: '保存快照' }).click()
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await expect(window.getByText(/快照已保存/)).toBeVisible()
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const snapRaw = await readFile(snapPath, 'utf-8')
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expect(snapRaw).toContain('"version": 1')
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expect(snapRaw).toContain('diff.txt')
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// 修复 diff.txt（两侧一致）+ 新增 new.txt → 重扫
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await wf(join(rightDir, 'diff.txt'), 'left v1')
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await wf(join(leftDir, 'new.txt'), 'n')
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await wf(join(rightDir, 'new.txt'), 'n')
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await window.getByRole('button', { name: '重新扫描' }).click()
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await expect(window.getByText('相同 3')).toBeVisible()
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// 加载快照对照：diff.txt 已修复、new.txt 新文件
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await stubOpenDialogSeq(app, [[snapPath]])
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await window.getByRole('button', { name: '加载快照' }).click()
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await expect(window.getByText(/已加载快照/)).toBeVisible()
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await expect(window.getByText('已修复 1')).toBeVisible()
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await expect(window.getByText('新文件 1')).toBeVisible()
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// 对照条目行（平铺）与变迁标注可见；退出对照恢复
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await expect(window.getByText('diff.txt')).toBeVisible()
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await expect(window.getByText('new.txt')).toBeVisible()
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await window.getByRole('button', { name: '退出对照' }).click()
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await expect(window.getByText('相同 3')).toBeVisible()
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await app.close()
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} finally {
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await removeTmpDir(root)
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}
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})
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})
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test.describe('拖拽导入（真实 Chromium DataTransfer 链路）', () => {
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@@ -462,3 +597,60 @@ test.describe('偏好持久化（跨实例重启）', () => {
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await second.app.close()
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})
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})
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test.describe('大文件性能基准（耗时上限断言）', () => {
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// 口径说明：万级行 diff 在 worker 后台实测为秒级；上限按慢机约 4 倍余量放宽
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// 防 CI flaky（用例超时 60s 兜底）。断言失败即性能回归，需排查引擎/IO 退化。
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test('5 万行多差异文件：后台计算完成在耗时上限内', async () => {
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const dir = await makeTmpDir('difflens-e2e-perf-diff-')
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try {
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const n = 50000
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const pad = (i: number): string => String(i).padStart(5, '0')
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const left = Array.from({ length: n }, (_, i) => `L${pad(i)}-${'x'.repeat(30)}`)
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const right = [...left]
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// 20 处分散修改（每 2500 行一处）
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for (let i = 0; i < n; i += 2500) right[i] = `R${pad(i)}-${'y'.repeat(30)}`
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const lp = await writeTextFixture(dir, 'big-left.txt', left.join('\n'))
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const rp = await writeTextFixture(dir, 'big-right.txt', right.join('\n'))
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const { app, window } = await launchApp()
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await stubOpenDialogSeq(app, [[lp], [rp]])
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await window.getByRole('button', { name: '打开左侧' }).click()
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await window.getByText('L00000-').first().waitFor()
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// 计时：打开右侧 → worker 重路径计算完成（有差异徽章出现）
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const t0 = Date.now()
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await window.getByRole('button', { name: '打开右侧' }).click()
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await window.getByText('有差异').first().waitFor()
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const elapsed = Date.now() - t0
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expect(elapsed).toBeLessThan(15000)
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// 完整性：双侧 5 万行均已加载
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await expect(window.locator('.status-item').filter({ hasText: '50000 行' })).toHaveCount(2)
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await app.close()
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} finally {
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await removeTmpDir(dir)
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}
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})
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test('大体积 GBK 文件：worker 后台解码渲染在耗时上限内', async () => {
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const dir = await makeTmpDir('difflens-e2e-perf-gbk-')
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try {
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// 约 300KB（≥ 解码 worker 快路径阈值 256KB），15000 行
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const bigLines = Array.from({ length: 15000 }, (_, i) => `中文大文件行${i}数据`).join('\n')
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const bigPath = await writeTextFixture(dir, 'big-gbk.txt', bigLines, 'gbk')
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const { app, window } = await launchApp()
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await stubOpenDialogSeq(app, [[bigPath]])
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const t0 = Date.now()
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await window.getByRole('button', { name: '打开左侧' }).click()
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// 完整渲染以状态栏总行数为准（末行在虚拟滚动视口外）
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await expect(
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window.locator('.status-item').filter({ hasText: '15000 行' })
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).toBeVisible()
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const elapsed = Date.now() - t0
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expect(elapsed).toBeLessThan(10000)
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await expect(window.getByText('中文大文件行0数据')).toBeVisible()
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await app.close()
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} finally {
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await removeTmpDir(dir)
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}
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})
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})
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