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node
typescript
hono
htmx
atproto
test(web): add WCAG AA accessibility tests for all page routes (ATB-34)
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-17
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apps/web/src/__tests__/a11y.test.ts
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apps/web/src/__tests__/a11y.test.ts
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import { getSession, getSessionWithPermissions } from "../lib/session.js";
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// ── Route factories ───────────────────────────────────────────────────────────
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// eslint-disable-next-line no-unused-vars
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import { createHomeRoutes } from "../routes/home.js";
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// eslint-disable-next-line no-unused-vars
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import { createLoginRoutes } from "../routes/login.js";
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// eslint-disable-next-line no-unused-vars
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import { createBoardsRoutes } from "../routes/boards.js";
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// eslint-disable-next-line no-unused-vars
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import { createTopicsRoutes } from "../routes/topics.js";
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// eslint-disable-next-line no-unused-vars
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import { createNewTopicRoutes } from "../routes/new-topic.js";
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// eslint-disable-next-line no-unused-vars
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import { createNotFoundRoute } from "../routes/not-found.js";
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// ── Constants ─────────────────────────────────────────────────────────────────
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// eslint-disable-next-line no-unused-vars
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const APPVIEW_URL = "http://localhost:3000";
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// ── Typed mock handles ────────────────────────────────────────────────────────
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// NOTE: jsdom has no CSS engine, so axe-core's color-contrast rules are
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// skipped automatically. These tests cover structural/semantic WCAG AA rules
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// only (landmark regions, heading hierarchy, form labels, aria attributes).
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// eslint-disable-next-line no-unused-vars
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//
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// We load HTML into the global jsdom document via document.open/write/close
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// rather than DOMParser because axe-core ignores DOMParser Documents and
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// always inspects window.document. document.open/write/close fully replaces
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// the global document (preserving <html lang> and <title>) so axe-core sees
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// the correct markup.
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async function checkA11y(html: string): Promise<void> {
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const doc = new DOMParser().parseFromString(html, "text/html");
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const results = await axe.run(doc, {
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document.open();
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document.write(html);
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document.close();
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const results = await axe.run({
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runOnly: { type: "tag", values: ["wcag2a", "wcag2aa"] },
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});
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const summary = results.violations
···
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}
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describe("WCAG AA accessibility — one happy-path test per page route", () => {
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// Tests added in subsequent tasks
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it.todo("home page / has no violations");
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it.todo("login page /login has no violations");
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it.todo("board page /boards/:id has no violations");
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it.todo("topic page /topics/:id has no violations");
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it.todo("new-topic page /new-topic (authenticated) has no violations");
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it.todo("not-found page has no violations");
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it("home page / has no violations", async () => {
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mockFetchApi.mockImplementation((path: string) => {
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if (path === "/forum") {
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return Promise.resolve({
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id: "1",
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did: "did:plc:forum",
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name: "Test Forum",
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description: "A test forum",
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indexedAt: "2024-01-01T00:00:00.000Z",
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});
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}
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if (path === "/categories") {
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return Promise.resolve({
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categories: [
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{
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id: "1",
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did: "did:plc:forum",
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name: "General",
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description: null,
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slug: "general",
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sortOrder: 0,
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},
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],
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});
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}
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if (path === "/categories/1/boards") {
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return Promise.resolve({
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boards: [
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{
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id: "1",
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did: "did:plc:forum",
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name: "Test Board",
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description: null,
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slug: "test",
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sortOrder: 0,
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},
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],
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});
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}
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return Promise.reject(new Error(`Unexpected fetchApi call: ${path}`));
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});
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const routes = createHomeRoutes(APPVIEW_URL);
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const res = await routes.request("/");
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expect(res.status).toBe(200);
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await checkA11y(await res.text());
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});
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it("login page /login has no violations", async () => {
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// getSession returns { authenticated: false } immediately with no cookie header.
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// No fetchApi calls are made.
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const routes = createLoginRoutes(APPVIEW_URL);
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const res = await routes.request("/login");
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expect(res.status).toBe(200);
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await checkA11y(await res.text());
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});
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it("board page /boards/:id has no violations", async () => {
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mockFetchApi.mockImplementation((path: string) => {
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if (path === "/boards/1") {
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return Promise.resolve({
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id: "1",
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did: "did:plc:forum",
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uri: "at://did:plc:forum/space.atbb.forum.board/1",
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name: "Test Board",
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description: null,
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slug: "test",
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sortOrder: 0,
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categoryId: "1",
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categoryUri: null,
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createdAt: "2024-01-01T00:00:00.000Z",
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indexedAt: "2024-01-01T00:00:00.000Z",
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});
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}
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if (path === "/boards/1/topics?offset=0&limit=25") {
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return Promise.resolve({ topics: [], total: 0, offset: 0, limit: 25 });
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}
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if (path === "/categories/1") {
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return Promise.resolve({
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id: "1",
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did: "did:plc:forum",
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name: "General",
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description: null,
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slug: null,
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sortOrder: null,
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forumId: null,
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createdAt: null,
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indexedAt: null,
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});
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}
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return Promise.reject(new Error(`Unexpected fetchApi call: ${path}`));
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});
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const routes = createBoardsRoutes(APPVIEW_URL);
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const res = await routes.request("/boards/1");
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expect(res.status).toBe(200);
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await checkA11y(await res.text());
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});
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it("topic page /topics/:id has no violations", async () => {
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mockFetchApi.mockImplementation((path: string) => {
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if (path.startsWith("/topics/1")) {
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return Promise.resolve({
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topicId: "1",
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locked: false,
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pinned: false,
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post: {
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id: "1",
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did: "did:plc:user",
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rkey: "abc123",
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title: "Test Topic Title",
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text: "Hello world, this is a test post.",
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forumUri: null,
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boardUri: null,
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boardId: "1",
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parentPostId: null,
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createdAt: "2024-01-01T00:00:00.000Z",
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author: { did: "did:plc:user", handle: "alice.test" },
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},
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replies: [],
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total: 0,
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offset: 0,
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limit: 25,
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});
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}
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if (path === "/boards/1") {
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return Promise.resolve({
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id: "1",
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did: "did:plc:forum",
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uri: "at://did:plc:forum/space.atbb.forum.board/1",
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name: "Test Board",
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description: null,
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slug: null,
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sortOrder: null,
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categoryId: "1",
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categoryUri: null,
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createdAt: null,
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indexedAt: null,
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});
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}
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if (path === "/categories/1") {
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return Promise.resolve({
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id: "1",
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did: "did:plc:forum",
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name: "General",
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description: null,
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slug: null,
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sortOrder: null,
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forumId: null,
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createdAt: null,
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indexedAt: null,
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});
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}
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return Promise.reject(new Error(`Unexpected fetchApi call: ${path}`));
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});
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const routes = createTopicsRoutes(APPVIEW_URL);
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const res = await routes.request("/topics/1");
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expect(res.status).toBe(200);
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await checkA11y(await res.text());
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});
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it("new-topic page /new-topic (authenticated) has no violations", async () => {
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// Override default unauthenticated session for this test only.
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mockGetSession.mockResolvedValueOnce({
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authenticated: true,
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did: "did:plc:user",
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handle: "alice.test",
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});
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mockFetchApi.mockImplementation((path: string) => {
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if (path === "/boards/1") {
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return Promise.resolve({
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id: "1",
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did: "did:plc:forum",
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uri: "at://did:plc:forum/space.atbb.forum.board/1",
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name: "Test Board",
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description: null,
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slug: null,
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sortOrder: null,
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categoryId: "1",
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categoryUri: null,
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createdAt: null,
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indexedAt: null,
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});
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}
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return Promise.reject(new Error(`Unexpected fetchApi call: ${path}`));
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});
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const routes = createNewTopicRoutes(APPVIEW_URL);
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const res = await routes.request("/new-topic?boardId=1");
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expect(res.status).toBe(200);
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await checkA11y(await res.text());
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});
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it("not-found page has no violations", async () => {
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// No fetchApi or session calls — unauthenticated with no cookie.
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const routes = createNotFoundRoute(APPVIEW_URL);
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const res = await routes.request("/anything-that-does-not-exist");
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expect(res.status).toBe(404);
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await checkA11y(await res.text());
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});
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});