From 0c6812fcda34f1c0b50d66bdada276c35b670f28 Mon Sep 17 00:00:00 2001
From: unanmed <1319491857@qq.com>
Date: Thu, 17 Sep 2026 12:59:24 +0800
Subject: [PATCH] =?UTF-8?q?test(07-10):=20=E6=9C=AB=E6=AD=A5=20set=20?=
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- paramUsed 为私有成员，其正确性只能通过下一条命令参数的写入偏移观测
- 增长与缩短两条末步用例补充参数缓冲区原始字节断言，使「末步起点回退」子缺陷在未修复时可直接失败
---
 packages-user/data-common/src/replay/array.test.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/packages-user/data-common/src/replay/array.test.ts b/packages-user/data-common/src/replay/array.test.ts
index 590f70e..a05894e 100644
--- a/packages-user/data-common/src/replay/array.test.ts
+++ b/packages-user/data-common/src/replay/array.test.ts
@@ -317,6 +317,10 @@ describe('ReplayArray set index maintenance', () => {
 
         array.add(3, [30]);
         expect(array.get(2)).toEqual({ command: 3, params: [30], index: 2 });
+        // 末步 set 后 paramUsed 等于实际使用字节数（2 + 6），追加命令的参数紧接其后从第 8 字节起写入
+        const params = new Uint8Array(array.getParamArray());
+        expect(params[8]).toBe(1);
+        expect(params[9]).toBe(30);
     });
 
     // 验证末步 set 缩短参数后 paramUsed 相应减少，后续追加的参数落在正确偏移上
@@ -332,6 +336,10 @@ describe('ReplayArray set index maintenance', () => {
 
         array.add(3, [30]);
         expect(array.get(2)).toEqual({ command: 3, params: [30], index: 2 });
+        // 末步 set 后 paramUsed 回落到 2 + 2，追加命令的参数紧接其后从第 4 字节起写入
+        const params = new Uint8Array(array.getParamArray());
+        expect(params[4]).toBe(1);
+        expect(params[5]).toBe(30);
     });
 
     // 验证中间步 set 增长参数后，读取流逐条读回与按索引读回结果一致