My Store: select books and add them to chosen people's shelves

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tools/mystore-test.js

@@ -34,6 +34,13 @@ const hub = http.createServer((req, res) => users.runAs(req.headers['x-user'] ==
     assert.equal((await (await imp('again.epub', withCover)).json()).duplicate, true, 'the same book is not added twice');
     ir = await (await imp('Plain_Name.epub', epub)).json(); assert.equal(ir.item.title, 'Rabbit Tales'); assert.equal(ir.noCover, true); assert.equal(ir.item.creator, 'A. Writer');
     ir = await (await imp('Some_Pdf_Book.pdf', Buffer.from('%PDF-1.4 hello'))).json(); assert.equal(ir.item.title, 'Some Pdf Book'); assert.equal(ir.noAuthor, true);
+    // the admin gives chosen books to chosen people
+    const impd = (await (await fetch(B + '/items')).json()).items.filter(x => x.id !== book.id && x.kind === 'book').map(x => x.id);
+    assert.equal((await fetch(B + '/people', { headers: bob })).status, 403); const ppl = await (await fetch(B + '/people')).json(); assert.ok(ppl.some(x => x.id === people.b.id && x.books));
+    assert.equal((await post('/assign', { items: impd, users: [people.b.id] }, bob)).status, 403); assert.equal((await post('/assign', { items: [], users: [people.b.id] })).status, 400); assert.equal((await post('/assign', { items: impd, users: [] })).status, 400);
+    let as = await (await post('/assign', { items: impd, users: [people.b.id] })).json(); assert.equal(as.people[0].added + as.people[0].had, impd.length, 'one of them is the book Bob already has'); assert.ok(as.people[0].added >= 2); assert.equal(as.people[0].failed, 0);
+    as = await (await post('/assign', { items: impd, users: [people.b.id] })).json(); assert.equal(as.people[0].added, 0); assert.equal(as.people[0].had, impd.length, 'a repeat is left alone');
+    assert.ok((await (await fetch(base + '/api/read/list', { headers: bob })).json()).some(x => x.title === 'Café & Cream'), 'the book is on Bob\'s shelf');
     for (const it of (await (await fetch(B + '/items')).json()).items.filter(x => x.id !== book.id && x.kind === 'book')) await fetch(`${B}/items/${it.id}`, { method: 'DELETE' });
     // music: several files, streamed with ranges
     let alb = await (await post('/items', { kind: 'music', title: 'Album', creator: 'Band' })).json(); const mp3 = Buffer.from('0123456789abcdefghij');