1 files changed, 156 insertions, 0 deletions
diff --git a/web/js/tests/admin-rescan.test.js b/web/js/tests/admin-rescan.test.js
new file mode 100644
index 0000000..f1661db
--- /dev/null
+++ b/web/js/tests/admin-rescan.test.js
@@ -0,0 +1,156 @@
+import { initKeyboard } from '../keyboard.js';
+import { renderScanProgress, triggerRescan } from '../views/admin-status.js';
+
+const failures = [];
+const requests = [];
+let keydownHandler = null;
+let rescanStatus = 200;
+
+function assert(cond, msg) {
+  if (!cond) failures.push(msg || 'assertion failed');
+}
+
+const indicator = mockElement();
+const indicatorText = mockElement();
+const toastEl = {
+  className: '',
+  textContent: '',
+  classList: { remove() {} },
+};
+
+globalThis.document = {
+  addEventListener(type, handler) {
+    if (type === 'keydown') keydownHandler = handler;
+  },
+  getElementById(id) {
+    if (id === 'scan-indicator') return indicator;
+    if (id === 'scan-indicator-text') return indicatorText;
+    if (id === 'toast') return toastEl;
+    return null;
+  },
+};
+globalThis.location = { pathname: '/', href: '' };
+globalThis.setTimeout = () => 0;
+
+globalThis.fetch = async (url, options = {}) => {
+  requests.push({ url: String(url), method: options.method || 'GET' });
+  if (String(url) === '/api/admin/rescan') {
+    if (rescanStatus !== 200) {
+      return jsonResponse({ error: 'admin only' }, rescanStatus);
+    }
+    return jsonResponse({ status: 'ok' });
+  }
+  if (String(url) === '/api/admin/scan-progress') {
+    return jsonResponse({
+      running: true,
+      current_set: 'movies',
+      sets_total: 2,
+      sets_done: 1,
+      files_total: 9,
+      files_done: 4,
+    });
+  }
+  return jsonResponse({});
+};
+
+function jsonResponse(body, status = 200) {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { 'content-type': 'application/json' },
+  });
+}
+
+function mockElement() {
+  return {
+    textContent: '',
+    hidden: true,
+    classList: {
+      add(name) {
+        if (name === 'hidden') this.hidden = true;
+      },
+      remove(name) {
+        if (name === 'hidden') this.hidden = false;
+      },
+      hidden: true,
+    },
+  };
+}
+
+function pressKey(key) {
+  let prevented = false;
+  keydownHandler?.({
+    key,
+    code: `Key${key.toUpperCase()}`,
+    target: { tagName: 'BODY', isContentEditable: false },
+    preventDefault() { prevented = true; },
+  });
+  return prevented;
+}
+
+function testKeyboardRescanHandler() {
+  let rescans = 0;
+  initKeyboard({ rescanMedia: () => { rescans += 1; } });
+
+  const prevented = pressKey('M');
+
+  assert(prevented, 'M should prevent default browser handling');
+  assert(rescans === 1, 'M should call the rescan handler');
+}
+
+function testRenderRunningProgress() {
+  renderScanProgress({
+    running: true,
+    current_set: 'music',
+    sets_total: 3,
+    sets_done: 2,
+    files_total: 20,
+    files_done: 7,
+  });
+
+  assert(indicator.classList.hidden === false, 'running progress should show the indicator');
+  assert(indicatorText.textContent === 'Scanning music 2/3 sets, 7/20 files', 'running progress text should include set and file counts');
+}
+
+function testRenderIdleProgressHidesIndicator() {
+  renderScanProgress({ running: false });
+
+  assert(indicator.classList.hidden === true, 'idle progress should hide the indicator');
+}
+
+async function testTriggerRescanRefreshesProgress() {
+  requests.length = 0;
+  rescanStatus = 200;
+  await triggerRescan();
+
+  assert(requests[0]?.url === '/api/admin/rescan', 'trigger should call rescan endpoint first');
+  assert(requests[0]?.method === 'POST', 'trigger should post to rescan endpoint');
+  assert(requests[1]?.url === '/api/admin/scan-progress', 'trigger should refresh progress after starting scan');
+  assert(indicator.classList.hidden === false, 'trigger should show refreshed running progress');
+}
+
+async function testTriggerRescanErrorDoesNotPollProgress() {
+  requests.length = 0;
+  toastEl.textContent = '';
+  rescanStatus = 403;
+
+  await triggerRescan();
+
+  assert(requests.length === 1, 'failed trigger should not poll scan progress');
+  assert(toastEl.textContent === 'admin only', 'failed trigger should show the API error');
+}
+
+console.log('Running admin rescan frontend tests...');
+testKeyboardRescanHandler();
+testRenderRunningProgress();
+testRenderIdleProgressHidesIndicator();
+await testTriggerRescanRefreshesProgress();
+await testTriggerRescanErrorDoesNotPollProgress();
+
+if (failures.length) {
+  console.error('FAILURES:');
+  failures.forEach((m) => console.error('  - ' + m));
+  process.exit(1);
+} else {
+  console.log('All admin rescan frontend tests passed.');
+  process.exit(0);
+}