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 +1,9 @@
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// 自动评分：编译一次学生工程，每个检查项各启动一次程序，按步骤操作并核对结果。
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// 检查大部分时间在等定时器，CPU 主要花在编译和启动程序上；2 核的服务器全站同时跑 GRADE_CONCURRENCY 个检查，其余排队。
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import type { CheckResult, ControlNode, GradeResult } from '@iot/shared'
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import { rm } from 'node:fs/promises'
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import { compileService } from '../compile-service'
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import { gradingDatabaseDir } from '../databases'
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import type { Check, Expectation, Step } from './checks'
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import { ProgramDriver } from './driver'
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@@ -30,8 +32,8 @@ async function withSlot<T>(task: () => Promise<T>): Promise<T> {
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}
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}
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/** 给学生工程评分；dir 是已写好源文件的工程目录 */
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export async function grade(dir: string, checks: Check[]): Promise<GradeResult> {
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/** 给学生工程评分；dir 是已写好源文件的工程目录，sampleId 决定用哪个实验的预置数据库（每个检查项一份） */
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export async function grade(dir: string, checks: Check[], sampleId?: string): Promise<GradeResult> {
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const start = Date.now()
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const compiled = await compileService.compile(dir)
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if (!compiled.ok) {
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@@ -41,16 +43,17 @@ export async function grade(dir: string, checks: Check[]): Promise<GradeResult>
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ms: Date.now() - start,
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}
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}
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const results = await Promise.all(checks.map((check) => withSlot(() => runCheck(dir, check))))
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const results = await Promise.all(checks.map((check) => withSlot(() => runCheck(dir, check, sampleId))))
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return { compiled: true, results, ms: Date.now() - start }
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}
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class Failure extends Error {}
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async function runCheck(dir: string, check: Check): Promise<CheckResult> {
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async function runCheck(dir: string, check: Check, sampleId?: string): Promise<CheckResult> {
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const driver = new ProgramDriver()
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const dbDir = sampleId ? await gradingDatabaseDir(sampleId) : undefined
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try {
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driver.start(dir)
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driver.start(dir, dbDir)
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if (!(await driver.waitFor(() => driver.forms.length > 0 || driver.exited, START_TIMEOUT)) || driver.forms.length === 0) {
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throw new Failure(driver.exceptions[0] ? `程序出错：${driver.exceptions[0]}` : '程序启动后没有显示窗体')
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}
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@@ -64,6 +67,7 @@ async function runCheck(dir: string, check: Check): Promise<CheckResult> {
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throw error
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} finally {
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driver.stop()
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if (dbDir) await rm(dbDir, { recursive: true, force: true })
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}
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}
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@@ -103,6 +107,28 @@ async function runStep(driver: ProgramDriver, step: Step) {
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await driver.settle()
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break
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}
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case 'cell':
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case 'edit': {
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const node = need(driver, step.control)
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if (node.type !== 'DataGridView') throw new Failure(`${step.control} 不是数据表格`)
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const rows = gridRows(node)
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if (step.row >= rows.length) throw new Failure(`数据表格 ${step.control} 里没有第 ${step.row + 1} 行（现在有 ${rows.length} 行数据）`)
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const column = typeof step.column === 'number' ? step.column : gridColumns(node).findIndex((c) => c.header === step.column || c.name === step.column)
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if (column < 0) throw new Failure(`数据表格 ${step.control} 里没有"${step.column}"列（现在的列：${gridColumns(node).map((c) => c.header).join('、') || '没有'}）`)
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driver.act(node, { action: 'cellClick', row: step.row, column })
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if (step.kind === 'edit') driver.act(node, { action: 'cellEdit', row: step.row, column, value: step.value })
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await driver.settle()
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break
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}
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case 'pick': {
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const node = need(driver, step.control)
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if (node.type !== 'DateTimePicker') throw new Failure(`${step.control} 不是日期时间选择器`)
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// 只给日期时：时间取中午，查询"某天到某天"时不受时分影响
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const [date, time = '12:00:00'] = step.value.split(' ')
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driver.act(node, { action: 'pick', value: `${date}T${time.length === 5 ? `${time}:00` : time}` })
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await driver.settle()
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break
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}
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case 'board':
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driver.setBoard(step)
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await driver.settle()
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@@ -116,6 +142,28 @@ async function runStep(driver: ProgramDriver, step: Step) {
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}
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}
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interface GridColumn {
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name: string
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header: string
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}
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function gridColumns(node: ControlNode): GridColumn[] {
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return (node.props.Columns as GridColumn[] | undefined) ?? []
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}
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/** 数据表格的数据行（不含最下面供新增的空行），每行按列序号排列的显示文字 */
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function gridRows(node: ControlNode): string[][] {
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const rows = (node.props.Rows as { items: { cells: unknown[]; isNew: boolean }[] } | undefined)?.items ?? []
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return rows.filter((r) => !r.isNew).map((r) => r.cells.map((c) => (c === true ? 'True' : c === false ? 'False' : String(c ?? ''))))
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}
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function rowMatches(node: ControlNode, cells: Record<string, string>) {
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const columns = gridColumns(node)
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const index = Object.keys(cells).map((key) => columns.findIndex((c) => c.header === key || c.name === key))
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if (index.some((i) => i < 0)) return false
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return gridRows(node).some((row) => Object.values(cells).every((value, i) => row[index[i]] === value))
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}
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const seconds = (ms: number) => `${Math.round(ms / 100) / 10} 秒`
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const quote = (value: unknown) => (value === undefined || value === null || value === '' ? '空的' : `"${String(value)}"`)
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@@ -171,6 +219,10 @@ function satisfied(driver: ProgramDriver, e: Exclude<Expectation, { kind: 'uncha
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}
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case 'savedImage':
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return driver.savedImages.some((path) => path.includes(e.path))
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case 'row': {
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const node = driver.find(e.control)
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return node !== undefined && rowMatches(node, e.cells) === e.present
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}
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}
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}
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@@ -214,5 +266,15 @@ function describeFailure(driver: ProgramDriver, e: Exclude<Expectation, { kind:
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const saved = driver.savedImages.map((p) => `"${p}"`).join('、')
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return `期望${prefix}${desc ?? `保存图片到"${e.path}"`}，${saved ? `实际保存的是 ${saved}` : '实际没有保存图片'}`
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}
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case 'row': {
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const node = need(driver, e.control)
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const wanted = Object.entries(e.cells).map(([k, v]) => `${k}=${v}`).join('，')
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const columns = gridColumns(node)
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const missing = Object.keys(e.cells).filter((key) => !columns.some((c) => c.header === key || c.name === key))
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if (missing.length) return `期望${prefix}数据表格 ${e.control} 里有"${missing.join('、')}"列，实际的列是 ${columns.map((c) => c.header).join('、') || '（没有数据）'}`
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const rows = gridRows(node)
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const shown = rows.slice(0, 5).map((r) => r.join(' | ')).join('；')
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return `期望${prefix}数据表格 ${e.control} ${desc ?? (e.present ? `有一行 ${wanted}` : `没有 ${wanted} 的行`)}，实际表格里${rows.length ? `是：${shown}${rows.length > 5 ? ' ……' : ''}` : '没有数据'}`
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}
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}
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}
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