refactor: 后端从 Django 换成 Bun + SQLite
Django 多个 worker 内存占用 1-2 GB，换成 Bun 单进程后约 25 MB， 同时去掉 Postgres 和 Redis，只剩 Caddy + Bun 两个容器。 - server/：Hono + bun:sqlite + Bun 原生 WebSocket，接口与原 django-ninja 保持兼容；表结构、时间/UUID 存储格式、密码哈希与 Django 一致，旧数据可直接使用 - 评分加权、贝叶斯平滑、成绩册的计算结果与原实现逐位一致（复刻 Python round/sum） - scripts/：Postgres → SQLite 迁移、新建超管、提示词层级标注、重算分数 - 前端：Django Admin 去掉后，用户新建/修改改为页面内弹窗； 非超管的挑战公开按钮置灰 - 权限不足返回 JSON 403（原来是重定向到不存在的登录页） - docker-compose / Caddyfile / dev.sh / CLAUDE.md 更新，删除 AGENTS.md - 服务器切换步骤见 docs/migrate-to-bun.md Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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import { beforeEach, describe, expect, test } from "bun:test"
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import { get, all } from "../src/db"
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import { client, freshDb, makeSubmission, makeTask, makeUser, uuid } from "./helpers"
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beforeEach(freshDb)
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describe("权限", () => {
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test("未登录 401，角色不够 403", async () => {
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makeUser("stu")
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makeUser("adm", "admin")
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expect((await (await client())("GET", "/api/submission/")).status).toBe(401)
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const stu = await client("stu")
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expect((await stu("GET", "/api/challenge/list")).status).toBe(403)
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expect((await stu("GET", "/api/submission/gradebook/?classname=a")).status).toBe(403)
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const adm = await client("adm")
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expect((await adm("GET", "/api/challenge/list")).status).toBe(200)
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expect((await adm("GET", "/api/submission/gradebook/?classname=a")).status).toBe(403)
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})
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test("封号后会话失效", async () => {
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const id = makeUser("stu")
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makeUser("boss", "super")
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const stu = await client("stu")
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expect((await stu("GET", "/api/account/profile")).json.username).toBe("stu")
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await (await client("boss"))("PUT", `/api/account/active/${id}`)
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expect((await stu("GET", "/api/account/profile")).json.username).toBe("")
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})
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test("跨站写请求被拒绝", async () => {
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const { app } = await import("../src/app")
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const res = await app.request("/api/account/login", {
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method: "POST",
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headers: { origin: "https://evil.example", "content-type": "application/json" },
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body: "{}",
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})
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expect(res.status).toBe(403)
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})
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})
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describe("账号管理", () => {
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test("新建和修改用户", async () => {
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makeUser("boss", "super")
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const boss = await client("boss")
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const created = await boss("POST", "/api/account/create", { username: "new1", password: "abcdef", role: "admin" })
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expect(created.status).toBe(200)
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expect((await boss("POST", "/api/account/create", { username: "new1", password: "abcdef" })).status).toBe(400)
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expect((await boss("POST", "/api/account/create", { username: "new2", password: "abc" })).status).toBe(422)
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const id = created.json.id
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expect((await boss("PUT", `/api/account/${id}`, { role: "normal", classname: "10A", password: "zzzzzz" })).status).toBe(200)
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const row = get(`SELECT role, classname, raw_password FROM account_user WHERE id = $id`, { id })
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expect(row).toEqual({ role: "normal", classname: "10A", raw_password: "zzzzzz" })
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// 新密码能登录
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const { app } = await import("../src/app")
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const login = await app.request("/api/account/login", {
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method: "POST",
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headers: { "content-type": "application/json" },
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body: JSON.stringify({ username: "new1", password: "zzzzzz" }),
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})
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expect(login.status).toBe(200)
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})
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test("批量新建", async () => {
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makeUser("boss", "super")
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const boss = await client("boss")
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expect((await boss("POST", "/api/account/batch", { classname: "11C", names: ["张三", "李四"] })).status).toBe(200)
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expect((await boss("POST", "/api/account/batch", { classname: "11C", names: ["张三"] })).status).toBe(400)
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const names = await boss("GET", "/api/account/names?classname=11C")
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expect(names.json).toEqual([
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{ name: "张三", username: "web11C张三" },
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{ name: "李四", username: "web11C李四" },
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])
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const list = await boss("GET", "/api/account/list?username=web11&page=1")
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expect(list.json.count).toBe(2)
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expect(list.json.items[0].raw_password).toMatch(/^[2-9]{6}$/)
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})
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})
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describe("评分", () => {
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test("角色加权 + 贝叶斯平滑 + 分区", async () => {
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const author = makeUser("author")
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makeUser("boss", "super")
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makeUser("adm", "admin")
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for (let i = 0; i < 3; i++) makeUser(`s${i}`)
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const task = makeTask("T")
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const sub = makeSubmission(author, task)
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await (await client("boss"))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 5 })
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await (await client("adm"))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 3 })
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let row = get(`SELECT raw_score, score, zone FROM submission_submission WHERE id = $id`, { id: sub })
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// raw = (5*0.5 + 3*0.3) / 0.8；没有别的提交，先验就是自己
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expect(row.raw_score).toBeCloseTo(4.25)
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expect(row.score).toBeCloseTo(4.25)
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expect(row.zone).toBe("pending")
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for (let i = 0; i < 3; i++) {
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await (await client(`s${i}`))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 5 })
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}
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row = get(`SELECT score, zone FROM submission_submission WHERE id = $id`, { id: sub })
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expect(row.zone).toBe("featured")
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const again = await (await client("s0"))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 1 })
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expect(again.json.message).toBe("你已经给这个提交打过分了")
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expect((await (await client("s0"))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 0 })).status).toBe(400)
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})
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})
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describe("提交与删除", () => {
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test("手写提示词提交会生成对话，删除提交连带删除提示词", async () => {
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makeUser("stu")
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const task = makeTask("T")
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const stu = await client("stu")
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const res = await stu("POST", "/api/submission/", { task_id: task, html: "<p>", prompt: "做个页面" })
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expect(res.status).toBe(200)
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const msgs = all(`SELECT role, source, submission_id FROM prompt_message ORDER BY id`)
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expect(msgs.map((m) => [m.role, m.source])).toEqual([
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["user", "manual"],
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["assistant", "manual"],
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])
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const chain = await stu("GET", `/api/submission/${res.json.id}/prompt-chain`)
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expect(chain.json[0].question).toBe("做个页面")
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expect((await stu("DELETE", `/api/submission/${res.json.id}`)).status).toBe(200)
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expect(all(`SELECT * FROM prompt_message`)).toEqual([])
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})
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test("被评分的提交只有超管能删", async () => {
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const author = makeUser("author")
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makeUser("other")
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makeUser("boss", "super")
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const sub = makeSubmission(author, makeTask("T"))
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await (await client("other"))("PUT", `/api/submission/${uuid(sub)}/score`, { score: 4 })
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expect((await (await client("author"))("DELETE", `/api/submission/${uuid(sub)}`)).status).toBe(400)
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expect((await (await client("boss"))("DELETE", `/api/submission/${uuid(sub)}`)).status).toBe(200)
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expect(all(`SELECT * FROM submission_rating`)).toEqual([])
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})
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test("删除挑战级联删除提交和对话", async () => {
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const stu = makeUser("stu")
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makeUser("adm", "admin")
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const task = makeTask("T", "challenge", 3)
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makeSubmission(stu, task)
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await (await client("stu"))("POST", "/api/submission/", { task_id: task, html: "", prompt: "x" })
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expect((await (await client("adm"))("DELETE", "/api/challenge/3")).status).toBe(200)
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for (const t of ["task_task", "task_challenge", "submission_submission", "prompt_conversation", "prompt_message"]) {
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expect(all(`SELECT * FROM ${t}`)).toEqual([])
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}
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})
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test("分组列表只保留每人每题最新一条，并统计提交次数", async () => {
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const a = makeUser("alice")
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const task = makeTask("T")
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makeSubmission(a, task, 1, "2026-01-01 00:00:00.000000")
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const latest = makeSubmission(a, task, 2, "2026-01-02 00:00:00.000000")
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const list = await (await client("alice"))("GET", "/api/submission?page=1")
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expect(list.json.count).toBe(1)
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expect(list.json.items[0].id).toBe(uuid(latest))
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expect(list.json.items[0].submit_count).toBe(2)
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const all2 = await (await client("alice"))("GET", "/api/submission/?page=1&grouped=false")
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expect(all2.json.count).toBe(2)
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})
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})
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describe("成绩册", () => {
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async function superClient() {
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makeUser("boss", "super")
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return client("boss")
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}
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test("必须选择班级", async () => {
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const boss = await superClient()
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const res = await boss("GET", "/api/submission/gradebook/")
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expect(res.status).toBe(400)
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expect(res.json.detail).toBe("请选择班级")
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})
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test("覆盖率、总分与平均分", async () => {
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const boss = await superClient()
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const [alice, bob] = ["alice", "bob", "carol", "dave"].map((n) => makeUser(n, "normal", "10A"))
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const tutorial = makeTask("Intro", "tutorial", 1, false)
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const challenge = makeTask("Challenge One", "challenge", 1)
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const optional = makeTask("Optional", "challenge", 2)
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makeSubmission(alice!, tutorial, 4)
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makeSubmission(bob!, tutorial, 5)
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makeSubmission(alice!, challenge, 3)
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makeSubmission(bob!, challenge, 4)
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makeSubmission(alice!, optional, 5)
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const data = (await boss("GET", "/api/submission/gradebook/?classname=10A")).json
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expect(data.student_count).toBe(4)
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expect(data.coverage_threshold_count).toBe(2)
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expect(data.included_task_count).toBe(2)
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const row = data.rows.find((r: any) => r.username === "alice")
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expect([row.tutorial_total, row.challenge_total, row.total_score, row.average_score]).toEqual([4, 3, 7, 3.5])
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const carol = data.rows.find((r: any) => r.username === "carol")
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expect([carol.total_score, carol.submitted_task_count, carol.missing_task_count]).toEqual([0, 0, 2])
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const withAll = (await boss("GET", "/api/submission/gradebook/?classname=10A&include_all_tasks=true")).json
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const alice2 = withAll.rows.find((r: any) => r.username === "alice")
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expect(alice2.scores[String(optional)]).toMatchObject({ submitted: true, score: 5 })
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expect(alice2.total_score).toBe(7)
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})
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test("同分取最新的提交", async () => {
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const boss = await superClient()
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const alice = makeUser("alice", "normal", "10A")
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const task = makeTask("T")
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makeSubmission(alice, task, 4.5, "2026-01-01 00:00:00.000000")
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const newer = makeSubmission(alice, task, 4.5, "2026-01-02 00:00:00.000000")
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makeSubmission(alice, task, 3, "2026-01-03 00:00:00.000000")
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const data = (await boss("GET", "/api/submission/gradebook/?classname=10A")).json
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expect(data.rows[0].scores[String(task)].submission_id).toBe(uuid(newer))
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})
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test("等级按向上取整的名次划分", async () => {
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const boss = await superClient()
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const task = makeTask("Boundary", "challenge", 7)
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for (let i = 1; i <= 20; i++) {
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makeSubmission(makeUser(`s${String(i).padStart(2, "0")}`, "normal", "10B"), task, 21 - i)
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}
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const data = (await boss("GET", "/api/submission/gradebook/?classname=10B")).json
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const grade = Object.fromEntries(data.rows.map((r: any) => [r.username, r.grade]))
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expect([grade.s01, grade.s06, grade.s07, grade.s14, grade.s15, grade.s18, grade.s19, grade.s20]).toEqual([
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"A", "A", "B", "B", "C", "C", "D", "E",
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])
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const score = Object.fromEntries(data.rows.map((r: any) => [r.username, r.assessment_score]))
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expect(score.s01).toBe(99)
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expect(score.s20).toBe(60)
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})
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test("导出 CSV", async () => {
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const boss = await superClient()
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const alice = makeUser("alice", "normal", "10A")
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const bob = makeUser("bob", "normal", "10A")
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const tutorial = makeTask("Intro", "tutorial", 1)
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makeSubmission(alice, tutorial, 4)
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makeSubmission(bob, tutorial, 2)
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makeSubmission(alice, makeTask("C", "challenge", 1), 5)
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const res = await boss("GET", "/api/submission/gradebook/export/?classname=10A&task_type=tutorial")
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expect(res.headers.get("content-type")).toBe("text/csv; charset=utf-8")
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expect(res.headers.get("content-disposition")).toContain("attachment;")
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const rows = res.text.replace(/^/, "").trim().split("\r\n").map((l) => l.split(","))
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expect(rows[0]).toEqual([
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"排名", "平时等级", "考核等级", "考核分数", "用户名", "班级", "教程1-Intro",
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"教程合计", "挑战合计", "总分", "平均分", "已提交任务数", "未提交任务数",
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])
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expect([rows[1]![4], rows[1]![6], rows[1]![9]]).toEqual(["alice", "4", "4"])
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})
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})
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describe("作品展", () => {
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test("下架或停用后前台看不到", async () => {
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const author = makeUser("author")
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makeUser("adm", "admin")
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const sub = makeSubmission(author, makeTask("T"), 4.5)
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const adm = await client("adm")
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const award = (await adm("POST", "/api/submission/showcase/manage/awards", { name: "最佳" })).json
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expect(award.item_count).toBe(0)
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const item = (await adm("POST", `/api/submission/showcase/manage/awards/${award.id}/items`, { submission_id: uuid(sub) })).json
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expect((await adm("POST", `/api/submission/showcase/manage/awards/${award.id}/items`, { submission_id: uuid(sub) })).json.detail).toBe("该作品已在奖项中")
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const author1 = await client("author")
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expect((await author1("GET", "/api/submission/showcase/")).json).toHaveLength(1)
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expect((await author1("GET", `/api/submission/showcase/${uuid(sub)}/`)).json.awards).toEqual(["最佳"])
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await adm("PUT", `/api/submission/showcase/manage/awards/${award.id}`, { name: "最佳", is_active: false })
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expect((await author1("GET", "/api/submission/showcase/")).json).toEqual([])
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expect((await author1("GET", `/api/submission/showcase/${uuid(sub)}/`)).status).toBe(404)
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await adm("DELETE", `/api/submission/showcase/manage/items/${item.id}`)
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expect((await adm("GET", "/api/submission/showcase/manage/awards")).json[0].item_count).toBe(0)
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})
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test("新提交让旧条目变为有更新，刷新后切到最新", async () => {
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makeUser("author")
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makeUser("adm", "admin")
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const task = makeTask("T")
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const author = await client("author")
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const first = (await author("POST", "/api/submission/", { task_id: task, html: "1" })).json.id
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const adm = await client("adm")
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const award = (await adm("POST", "/api/submission/showcase/manage/awards", { name: "A" })).json
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const item = (await adm("POST", `/api/submission/showcase/manage/awards/${award.id}/items`, { submission_id: first })).json
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const second = (await author("POST", "/api/submission/", { task_id: task, html: "2" })).json.id
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let items = (await adm("GET", `/api/submission/showcase/manage/awards/${award.id}/items`)).json
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expect(items[0].is_stale).toBe(true)
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const refreshed = (await adm("PUT", `/api/submission/showcase/manage/items/${item.id}/refresh`)).json
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expect(refreshed.submission_id).toBe(second)
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expect(refreshed.is_stale).toBe(false)
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})
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})
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describe("自由创作", () => {
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test("只有作者本人和超管能访问", async () => {
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makeUser("me")
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makeUser("you")
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makeUser("boss", "super")
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const me = await client("me")
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const c = (await me("POST", "/api/creation/", { title: " 作品 ", content: "d" })).json
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expect(c.title).toBe("作品")
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expect(c.display).toBe(1)
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expect((await me("POST", "/api/creation/", { title: " " })).status).toBe(400)
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expect((await (await client("you"))("GET", `/api/creation/${c.display}`)).status).toBe(403)
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expect((await (await client("boss"))("GET", `/api/creation/${c.display}`)).status).toBe(200)
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const saved = (await me("PUT", `/api/creation/${c.display}/code`, { html: "<p>" })).json
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expect(saved.html).toBe("<p>")
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expect((await me("GET", "/api/creation/mine")).json[0].has_code).toBe(true)
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expect((await me("POST", "/api/submission/", { task_id: c.task_id })).json.detail).toBe("自由创作不需要提交")
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})
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})
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