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test/lessons.test.js

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+import test from "node:test";
+import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import { parseDocx } from "../server/parser.js";
+import {
+  lessonKey,
+  diffSchedules,
+  changeCount,
+  personalFilter,
+  subgroupsOf,
+} from "../shared/lessons.js";
+
+const fef = () =>
+  parseDocx(readFileSync(new URL("./fixtures/fef-23-ba.docx", import.meta.url)), {
+    name: "23-ЛГ_23-БА.docx",
+  });
+const find = (s, group, test) =>
+  s.lessons.find((l) => l.groups.includes(group) && test(l));
+
+test("Ключ занятия не зависит от строки таблицы и переживает перепубликацию", () => {
+  const a = fef(),
+    b = fef();
+  // Same content parsed twice: same keys, no changes.
+  assert.deepEqual(
+    a.lessons.map((l) => lessonKey(l, "23-БА")),
+    b.lessons.map((l) => lessonKey(l, "23-БА")),
+  );
+  assert.equal(changeCount(diffSchedules(a, b, "23-БА")), 0);
+  const moved = { ...a.lessons[0], id: "other-row" };
+  assert.equal(lessonKey(moved, "23-БА"), lessonKey(a.lessons[0], "23-БА"));
+});
+
+test("Сравнение версий: аудитория, перенос, новое и удалённое занятие", () => {
+  const before = fef(),
+    after = fef();
+  const room = find(after, "23-БА", (l) => l.day === 5 && l.start === "08:30");
+  room.room = "333А";
+  const pr = find(after, "23-БА", (l) => l.day === 5 && l.subject === "PR-менеджмент");
+  pr.start = "11:45";
+  const risk = find(after, "23-БА", (l) => l.day === 3 && l.subject === "Риск-менеджмент");
+  after.lessons.splice(after.lessons.indexOf(risk), 1);
+  after.lessons.push({ ...pr, id: "new", day: 6, start: "08:30", subject: "Новый предмет" });
+  // A change for the other group must not reach 23-БА.
+  find(after, "23-ЛГ", (l) => l.room).room = "999";
+
+  const diff = diffSchedules(before, after, "23-БА");
+  assert.deepEqual(diff.added.map((l) => l.subject), ["Новый предмет"]);
+  assert.deepEqual(diff.removed.map((l) => l.subject), ["Риск-менеджмент"]);
+  assert.deepEqual(
+    diff.changed.map((c) => [c.after.subject, c.fields.map((f) => `${f.field}:${f.from}→${f.to}`)]),
+    [
+      ["Инновационный менеджмент", ["room:333→333А"]],
+      ["PR-менеджмент", ["start:10:05→11:45"]],
+    ],
+  );
+  assert.equal(changeCount(diff), 4);
+});
+
+test("Изменённая пометка недель видна как изменение, а не как новое занятие", () => {
+  const before = fef(),
+    after = fef();
+  find(after, "23-БА", (l) => l.condition === "6-13н").condition = "6-14н";
+  const diff = diffSchedules(before, after, "23-БА");
+  assert.equal(diff.added.length + diff.removed.length, 0);
+  assert.deepEqual(diff.changed[0].fields.map((f) => [f.label, f.from, f.to]), [
+    ["Недели", "6-13н", "6-14н"],
+  ]);
+});
+
+test("Подгруппа и скрытые занятия фильтруются только для своей группы", () => {
+  const s = fef();
+  assert.deepEqual(subgroupsOf(s, "23-ЛГ"), ["Подгруппа 1", "Подгруппа 2"]);
+  assert.deepEqual(subgroupsOf(s, "23-БА"), []);
+  const first = find(s, "23-ЛГ", (l) => l.subgroups.some((g) => g.label === "Подгруппа 1"));
+  const second = find(s, "23-ЛГ", (l) => l.subgroups.some((g) => g.label === "Подгруппа 2"));
+  const whole = find(s, "23-ЛГ", (l) => !l.subgroups.length);
+  const prefs = { subgroup: "Подгруппа 2", hidden: [lessonKey(whole, "23-ЛГ")] };
+  assert.equal(personalFilter(first, "23-ЛГ", prefs), "other-subgroup");
+  assert.equal(personalFilter(second, "23-ЛГ", prefs), "shown");
+  assert.equal(personalFilter(whole, "23-ЛГ", prefs), "hidden");
+  assert.equal(personalFilter(first, "23-ЛГ", null), "shown");
+});