msw: Implement DELETE /api/v1/crates/:name/follow request handler

Author: Turbo87

packages/crates-io-msw/handlers/crates.js

@@ -3,5 +3,6 @@ import followCrate from './crates/follow.js';
 import following from './crates/following.js';
 import getCrate from './crates/get.js';
 import listCrates from './crates/list.js';
+import unfollowCrate from './crates/unfollow.js';
 
-export default [listCrates, getCrate, deleteCrate, following, followCrate];
+export default [listCrates, getCrate, deleteCrate, following, followCrate, unfollowCrate];

packages/crates-io-msw/handlers/crates/unfollow.js

@@ -0,0 +1,26 @@
+import { http, HttpResponse } from 'msw';
+
+import { db } from '../../index.js';
+import { notFound } from '../../utils/handlers.js';
+import { getSession } from '../../utils/session.js';
+
+export default http.delete('/api/v1/crates/:name/follow', async ({ params }) => {
+  let { user } = getSession();
+  if (!user) {
+    return HttpResponse.json({ errors: [{ detail: 'must be logged in to perform that action' }] }, { status: 403 });
+  }
+
+  let crate = db.crate.findFirst({ where: { name: { equals: params.name } } });
+  if (!crate) {
+    return notFound();
+  }
+
+  db.user.update({
+    where: { id: { equals: user.id } },
+    data: {
+      followedCrates: user.followedCrates.filter(c => c.id !== crate.id),
+    },
+  });
+
+  return HttpResponse.json({ ok: true });
+});

packages/crates-io-msw/handlers/crates/unfollow.test.js

@@ -0,0 +1,36 @@
+import { assert, test } from 'vitest';
+
+import { db } from '../../index.js';
+
+test('returns 403 if unauthenticated', async function () {
+  let response = await fetch('/api/v1/crates/foo/follow', { method: 'DELETE' });
+  assert.strictEqual(response.status, 403);
+  assert.deepEqual(await response.json(), {
+    errors: [{ detail: 'must be logged in to perform that action' }],
+  });
+});
+
+test('returns 404 for unknown crates', async function () {
+  let user = db.user.create();
+  db.mswSession.create({ user });
+
+  let response = await fetch('/api/v1/crates/foo/follow', { method: 'DELETE' });
+  assert.strictEqual(response.status, 404);
+  assert.deepEqual(await response.json(), { errors: [{ detail: 'Not Found' }] });
+});
+
+test('makes the authenticated user unfollow the crate', async function () {
+  let crate = db.crate.create({ name: 'rand' });
+
+  let user = db.user.create({ followedCrates: [crate] });
+  db.mswSession.create({ user });
+
+  assert.deepEqual(user.followedCrates, [crate]);
+
+  let response = await fetch('/api/v1/crates/rand/follow', { method: 'DELETE' });
+  assert.strictEqual(response.status, 200);
+  assert.deepEqual(await response.json(), { ok: true });
+
+  user = db.user.findFirst({ where: { id: user.id } });
+  assert.deepEqual(user.followedCrates, []);
+});