first commit

tests/unit/worker/voice-line-parse-helpers.test.ts

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+import { describe, expect, it } from 'vitest'
+import { parseVoiceLinesJson as parseStoryboardVoiceLinesJson } from '@/lib/workers/handlers/script-to-storyboard-helpers'
+import { parseVoiceLinesJson as parseStandaloneVoiceLinesJson } from '@/lib/workers/handlers/voice-analyze-helpers'
+
+describe('voice line parse helpers', () => {
+  it('script-to-storyboard parser accepts explicit empty array', () => {
+    expect(parseStoryboardVoiceLinesJson('[]')).toEqual([])
+  })
+
+  it('script-to-storyboard parser rejects non-object array payload', () => {
+    expect(() => parseStoryboardVoiceLinesJson('[1,2]')).toThrow('voice_analyze: invalid payload')
+  })
+
+  it('voice-analyze parser accepts explicit empty array', () => {
+    expect(parseStandaloneVoiceLinesJson('[]')).toEqual([])
+  })
+
+  it('voice-analyze parser rejects non-object array payload', () => {
+    expect(() => parseStandaloneVoiceLinesJson('[1,2]')).toThrow('Invalid voice lines data structure')
+  })
+})