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@@ -1,6 +1,11 @@
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-/** Regression tests for the bilingual corpus scope and structural signature. */
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+/** Regression tests for bilingual snapshots, corpus scope, and structure. */
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+import { execFileSync, spawnSync } from 'node:child_process'
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+import { mkdtempSync, rmSync } from 'node:fs'
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+import { tmpdir } from 'node:os'
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+import { join } from 'node:path'
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import { describe, expect, it } from 'vitest'
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+import { gitBlobHash, storeGitBlob } from './translation-pairing-git.ts'
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import {
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isTranslationScopeFile,
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pairAnchorOfArgument,
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@@ -15,6 +20,71 @@ function signature(markdown: string) {
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return translationStructureSignature(parseTranslationMarkdown(markdown), 'counterpart.zh.md')
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}
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+function gitSupportsObjectFormat(format: 'sha256'): boolean {
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+ const root = mkdtempSync(join(tmpdir(), 'dsh-git-object-format-'))
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+ try {
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+ return spawnSync('git', ['init', '--quiet', `--object-format=${format}`, root], {
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+ stdio: 'ignore',
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+ }).status === 0
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+ } finally {
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+ rmSync(root, { recursive: true, force: true })
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+ }
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+}
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+
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+const supportsSha256ObjectFormat = gitSupportsObjectFormat('sha256')
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+
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+describe('translation pairing snapshots', () => {
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+ it('stores exact uncommitted bytes for later recovery by object ID', () => {
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+ const root = mkdtempSync(join(tmpdir(), 'dsh-translation-pairing-'))
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+ try {
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+ execFileSync('git', ['init', '--quiet', root], {
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+ env: { ...process.env, GIT_DEFAULT_HASH: 'sha1' },
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+ })
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+ const content = Buffer.from([0x75, 0x6e, 0x63, 0x6f, 0x6d, 0x6d, 0x69, 0x74, 0x74, 0x65, 0x64, 0x0a, 0xff])
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+
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+ const objectId = storeGitBlob(root, content)
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+
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+ expect(objectId).toBe(gitBlobHash(content))
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+ expect(execFileSync('git', [
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+ '-C', root, 'rev-parse', `refs/dsh/translation-pairing/snapshots/${objectId}`,
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+ ], { encoding: 'utf8' }).trim()).toBe(objectId)
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+ execFileSync('git', ['-C', root, 'gc', '--prune=now'])
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+ expect(execFileSync('git', ['-C', root, 'cat-file', '-p', objectId])).toEqual(content)
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+ } finally {
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+ rmSync(root, { recursive: true, force: true })
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+ }
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+ })
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+
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+ it('fails before a sidecar can reference an unavailable object', () => {
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+ const root = mkdtempSync(join(tmpdir(), 'dsh-translation-pairing-'))
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+ try {
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+ expect(() => storeGitBlob(root, Buffer.from('snapshot'))).toThrow('git hash-object -w --stdin failed')
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+ } finally {
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+ rmSync(root, { recursive: true, force: true })
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+ }
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+ })
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+
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+ it('fails clearly when Git cannot be started', () => {
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+ const previousPath = process.env.PATH
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+ try {
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+ process.env.PATH = ''
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+ expect(() => storeGitBlob('.', Buffer.from('snapshot'))).toThrow('git hash-object -w --stdin failed')
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+ } finally {
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+ process.env.PATH = previousPath
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+ }
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+ })
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+
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+ it.skipIf(!supportsSha256ObjectFormat)('rejects an object format that pairing records cannot represent', () => {
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+ const root = mkdtempSync(join(tmpdir(), 'dsh-translation-pairing-'))
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+ try {
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+ execFileSync('git', ['init', '--quiet', '--object-format=sha256', root])
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+ expect(() => storeGitBlob(root, Buffer.from('snapshot'))).toThrow('returned unexpected object ID')
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+ } finally {
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+ rmSync(root, { recursive: true, force: true })
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+ }
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+ })
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+})
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+
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describe('translation pairing manifest', () => {
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it('accepts an exclusions-only manifest', () => {
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expect(parseTranslationPairingManifest(JSON.stringify({
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Ziya