项目 6 数据存储：仿冒 SqlClient（T-SQL 转写成 SQLite）、数据库页面、DataGridView、DateTimePicker
- 每个学生一套数据库，长期保存（data/databases/<用户编号>/库名.db）；学生程序运行时挂进沙箱可读写 - Sim.Data：SqlConnection / SqlCommand / SqlDataReader / SqlDataAdapter / SqlCommandBuilder / SqlParameter； 连接字符串只按库名打开学生自己的库；ScriptDom 解析 T-SQL 后按白名单转写成 SQLite 语句， STRICT 表 + 元数据表还原 SQL Server 的列类型，报错编号和中文信息与 SQL Server 一致； INSERT 不写列名时跳过自增列，日期统一格式（书上 DateTime.ToString() 拼接的日期能正确比较） - 常驻 SQL 服务（Sim.Runner sql-server）：数据库页面的查询、对象资源管理器，评分前按实验 database.sql 建库 - 数据库页面（代替 SSMS）：对象资源管理器、查询窗口、编辑前 200 行、表设计器、恢复实验初始数据 - DataGridView（绑定 DataView/DataTable/DataSet，单元格修改写回 DataTable）、DateTimePicker；设计器工具箱加入 - 评分：每个检查项一份新建的实验库；新增点 / 修改表格单元格、选日期、表格里有 / 没有某行的检查 - 示例：项目 6 任务 2、3；时间格式改成和中文 Windows 一致（9:05:03）；异常堆栈不暴露服务器路径 - 测试：数据库端到端、接口（每人只看到自己的库、恢复实验数据）、评分出错情况、T-SQL 生成 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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@@ -1,7 +1,7 @@
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// 端到端测试：直接启动 C# 运行器，模拟浏览器操作，检查教材示例工程的行为。
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// 运行前先编译运行时：bun run build:runtime
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import { afterAll, afterEach, describe, expect, test } from 'bun:test'
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import { cp, rm } from 'node:fs/promises'
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import { cp, mkdir, rm } from 'node:fs/promises'
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import { resolve } from 'node:path'
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import type { ControlNode, RunnerInput, RunnerMessage } from '@iot/shared'
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import { compileService } from '../src/compile-service'
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@@ -15,12 +15,12 @@ class Runner {
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private waiters: { match: (m: RunnerMessage) => boolean; resolve: (m: RunnerMessage) => void }[] = []
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/** 与服务器相同的流程：先由编译服务编译，成功后启动运行进程 */
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static async start(projectDir: string) {
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static async start(projectDir: string, dbDir?: string) {
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const runner = new Runner()
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const compiled = await compileService.compile(projectDir)
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runner.receive({ type: 'compiled', ...compiled })
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if (compiled.ok) {
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const { cmd, env } = runCommand(projectDir, {})
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const { cmd, env } = runCommand(projectDir, {}, dbDir)
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runner.proc = Bun.spawn(cmd, { stdin: 'pipe', stdout: 'pipe', stderr: 'inherit', env })
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runner.reading = runner.read()
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}
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@@ -417,14 +417,14 @@ test('项目5 任务2：照书上直接 Abort 挂起的线程，和 .NET Framewo
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}, 30000)
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/** 把一段 Main 方法体写成工程并运行，收集它的控制台输出 */
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async function runMain(name: string, body: string, usings = '') {
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async function runMain(name: string, body: string, usings = '', dbDir?: string) {
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const dir = resolve(ROOT, '.runs', `test-${name}`)
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await rm(dir, { recursive: true, force: true })
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await Bun.write(
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`${dir}/Program.cs`,
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`using System;\nusing System.IO;\nusing System.Linq;\n${usings}\nstatic class Program\n{\n static void Main()\n {\n${body}\n }\n}\n`,
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)
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runner = await Runner.start(dir)
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runner = await Runner.start(dir, dbDir)
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return { runner, dir }
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}
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@@ -544,6 +544,92 @@ test('图片：程序所在目录可写，Image.Save / FromFile 往返，文件
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expect(runner.messages.filter((m) => m.type === 'imageSaved').map((m) => (m as { path: string }).path)).toEqual(['Pics/a.png'])
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}, 30000)
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test('数据库：照书上的写法建库建表、插入、查询、SqlCommandBuilder 修改、删除、按时间段查询；报错和 SQL Server 一样', async () => {
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const dbDir = resolve(ROOT, '.runs', 'test-db-data')
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await rm(dbDir, { recursive: true, force: true })
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await mkdir(dbDir, { recursive: true })
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const { runner } = await runMain(
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'database',
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`
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var master = new SqlConnection(@"Data Source= PC-20150908SCJF\\SQLSERVER1026;User ID=sa;Password=123456");
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master.Open();
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new SqlCommand("CREATE DATABASE 环境数据表", master).ExecuteNonQuery();
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master.Close();
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string cs = @"Data Source=.;Initial Catalog=环境数据表;User ID=sa;Password=123456";
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var conn = new SqlConnection(cs);
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conn.Open();
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new SqlCommand("CREATE TABLE CampusEnvironment (ID int IDENTITY(1,1) PRIMARY KEY, light varchar(50), humidity varchar(50), temperature varchar(50), addtime datetime)", conn).ExecuteNonQuery();
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// 书上的写法：不写列名，值的顺序是温度、湿度、光照（和建表的列顺序不一样）
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string temperature = "25", humidity = "60", light = "500";
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int n = new SqlCommand("insert into CampusEnvironment values (" + temperature + "," + humidity + "," + light + ", '" + new DateTime(2024, 1, 16, 9, 5, 3).ToString() + "')", conn).ExecuteNonQuery();
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Console.WriteLine("inserted=" + n);
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new SqlCommand("insert into CampusEnvironment (light, humidity, temperature, addtime) values ('300', '55', '18', '2024/1/20 14:42:00')", conn).ExecuteNonQuery();
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new SqlCommand("insert into CampusEnvironment (light, humidity, temperature, addtime) values ('100', '50', '20', '2024-01-25 08:00:00')", conn).ExecuteNonQuery();
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var adapter = new SqlDataAdapter(new SqlCommand("select ID as '编号',temperature as '温度',humidity as '湿度',light as '光照度', addtime as '时间' from CampusEnvironment", conn));
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var ds = new DataSet();
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adapter.Fill(ds);
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var t = ds.Tables[0];
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Console.WriteLine("columns=" + string.Join(",", t.Columns.Cast<DataColumn>().Select(c => c.ColumnName + ":" + c.DataType.Name)));
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Console.WriteLine("row0=" + string.Join("|", t.Rows[0].ItemArray));
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// 修改：改 DataTable 里的一格，SqlCommandBuilder 生成 UPDATE
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var builder = new SqlCommandBuilder(adapter);
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adapter.UpdateCommand = builder.GetUpdateCommand();
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t.Rows[0]["温度"] = "26";
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Console.WriteLine("updated=" + adapter.Update(t));
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Console.WriteLine("check=" + new SqlCommand("select temperature from CampusEnvironment where ID=1", conn).ExecuteScalar());
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Console.WriteLine("deleted=" + new SqlCommand("delete from CampusEnvironment where id=" + t.Rows[2][0].ToString(), conn).ExecuteNonQuery());
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// 任务 3：BETWEEN 拼接 DateTime.ToString()（中文格式）
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var ds2 = new DataSet();
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new SqlDataAdapter(new SqlCommand("select * from CampusEnvironment where addtime BETWEEN '" + new DateTime(2024, 1, 16).ToString() + "' AND '" + new DateTime(2024, 1, 18).ToString() + "'", conn)).Fill(ds2);
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Console.WriteLine("between=" + ds2.Tables[0].Rows.Count);
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var reader = new SqlCommand("select count(*), max(addtime), CONVERT(varchar(10), addtime, 120) as d from CampusEnvironment group by CONVERT(varchar(10), addtime, 120) order by d", conn).ExecuteReader();
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while (reader.Read()) Console.WriteLine("group=" + reader.GetInt32(0) + "," + reader.GetDateTime(1).ToString("HH:mm") + "," + reader["d"]);
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reader.Close();
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foreach (var sql in new[] { "select * from NoSuchTable", "selec * from CampusEnvironment", "insert into CampusEnvironment values (1, 2)", "insert into CampusEnvironment (ID, light) values (5, '1')", "select nosuch from CampusEnvironment", "insert into CampusEnvironment (addtime) values ('abc')" })
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{
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try { new SqlCommand(sql, conn).ExecuteNonQuery(); }
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catch (SqlException ex) { Console.WriteLine("error=" + ex.Number + " " + ex.Message); }
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}
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try { new SqlConnection("Data Source=.;Initial Catalog=NoDb").Open(); }
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catch (SqlException ex) { Console.WriteLine("error=" + ex.Number + " " + ex.Message); }`,
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'using System.Data;\nusing System.Data.SqlClient;',
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dbDir,
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)
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const compiled = await runner.waitFor('compiled')
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expect(compiled.diagnostics.filter((d) => d.severity === 'error')).toEqual([])
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await runner.finished()
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const output = runner.messages.flatMap((m) => (m.type === 'console' ? [m.text] : [])).join('')
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const errors = runner.messages.filter((m) => m.type === 'exception')
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expect(errors).toEqual([])
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for (const line of [
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'inserted=1',
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'columns=编号:Int32,温度:String,湿度:String,光照度:String,时间:DateTime',
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// 书上的列顺序错位：光照存了温度的值
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'row0=1|500|60|25|2024/1/16 9:05:03',
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'updated=1',
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'check=26',
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'deleted=1',
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'between=1',
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'group=1,09:05,2024-01-16',
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'group=1,14:42,2024-01-20',
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"error=208 对象名 'NoSuchTable' 无效。",
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"error=102 'selec' 附近有语法错误。",
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'error=213 列名或所提供值的数目与表定义不匹配。',
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"error=544 当 IDENTITY_INSERT 设置为 OFF 时，不能为表 'CampusEnvironment' 中的标识列插入显式值。",
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"error=207 列名 'nosuch' 无效。",
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'error=241 从字符串转换日期和/或时间时，转换失败。',
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'error=4060 无法打开登录所请求的数据库 "NoDb"。登录失败。',
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]) {
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expect(output).toContain(line)
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}
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}, 30000)
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test.skipIf(config.sandbox === 'none')('沙箱：看不到服务器文件、别的运行目录、环境变量和其他进程，工程目录只读', async () => {
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process.env.SIM_TEST_SECRET = '不该被看到'
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const { runner } = await runMain(
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