fix: 修复转换微信语音发送逻辑

tests/unit/voice-quality.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, it } from 'vitest'
+import {
+  VOICE_MIN_PCM_BYTES,
+  validateVoicePcm,
+  validateVoiceSilk,
+  validateVoiceSilkMetadata
+} from '../../src/main/voice-pipeline/voice-quality'
+
+describe('voice quality gates', () => {
+  it('accepts a complete 20ms PCM frame', () => {
+    expect(validateVoicePcm(new Uint8Array(VOICE_MIN_PCM_BYTES))).toMatchObject({
+      pcmSize: VOICE_MIN_PCM_BYTES,
+      sampleRate: 16_000,
+      channels: 1,
+      durationMs: 20
+    })
+  })
+
+  it('rejects empty, odd-sized and sub-frame PCM', () => {
+    expect(() => validateVoicePcm(new Uint8Array())).toThrow('PCM 为空')
+    expect(() => validateVoicePcm(new Uint8Array(3))).toThrow('长度无效')
+    expect(() => validateVoicePcm(new Uint8Array(VOICE_MIN_PCM_BYTES - 2))).toThrow('过短')
+  })
+
+  it('rejects a header-only Silk payload', () => {
+    expect(() => validateVoiceSilkMetadata(10, 20)).toThrow('只有文件头')
+    expect(() => validateVoiceSilk(new TextEncoder().encode('\x02#!SILK_V3'), 20)).toThrow(
+      '只有文件头'
+    )
+  })
+
+  it('accepts valid Silk metadata', () => {
+    expect(validateVoiceSilkMetadata(128, 240)).toEqual({ silkSize: 128, durationMs: 240 })
+    const silk = new Uint8Array(128)
+    silk.set(new TextEncoder().encode('\x02#!SILK_V3'))
+    expect(validateVoiceSilk(silk, 240)).toEqual({ silkSize: 128, durationMs: 240 })
+  })
+})