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tests/frontend_modules.test.mjs

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+import assert from 'node:assert/strict';
+
+global.window = {PYTORRENT_DISABLE_AUTOSTART: true};
+const app = await import('../pytorrent/static/js/app.js');
+const source = app.buildRuntimeSource();
+
+assert.equal(app.moduleSources.length, 12, 'all frontend module chunks are loaded');
+assert.doesNotThrow(() => Function('io', source), 'assembled frontend runtime compiles');
+
+for (const marker of [
+  'function renderRow',
+  'function renderTable',
+  'function scheduleRender',
+  'async function post',
+  'async function loadRss',
+  'async function loadSmartQueue',
+  'function ensurePlannerToolsUI',
+  'function loadPlannerPreview',
+  'function pollerPayload',
+  'function pollerDiagnostics',
+  'function renderHealthDashboard',
+  'function recordNotification',
+  'function drawTrafficHistory',
+  "socket.on('connect'",
+  '/api/download-planner/preview',
+  'plannerProfileName',
+  'pollerTorrentList',
+]) {
+  assert.ok(source.includes(marker), `runtime contains ${marker}`);
+}
+
+function extractFunction(src, name){
+  const start = src.indexOf(`function ${name}`);
+  assert.ok(start >= 0, `found function ${name}`);
+  const open = src.indexOf('{', start);
+  let depth = 0;
+  for(let i=open; i<src.length; i++){
+    const ch = src[i];
+    if(ch === '{') depth++;
+    if(ch === '}') depth--;
+    if(depth === 0) return src.slice(start, i + 1);
+  }
+  throw new Error(`unterminated function ${name}`);
+}
+
+const escLine = source.match(/const esc = .*?;\n/)?.[0];
+assert.ok(escLine, 'found esc helper');
+
+const renderHarness = new Function(`${escLine}
+${extractFunction(source, 'progressBar')}
+${extractFunction(source, 'compactCell')}
+${extractFunction(source, 'table')}
+${extractFunction(source, 'smartQueueToastMessage')}
+return {esc, progressBar, compactCell, table, smartQueueToastMessage};`)();
+
+assert.equal(renderHarness.esc('<tag>&"'), '&lt;tag&gt;&amp;&quot;', 'esc escapes HTML');
+assert.ok(renderHarness.progressBar(42).includes('42%'), 'progressBar renders percentage');
+assert.ok(renderHarness.compactCell('x'.repeat(200)).includes('title='), 'compactCell renders title for long text');
+assert.ok(renderHarness.table(['A'], [['B']]).includes('<table'), 'table renders HTML table');
+assert.ok(renderHarness.smartQueueToastMessage({stopped:[1,2], started:[3], max_active_downloads:5}).includes('Smart Queue:'), 'smartQueue toast renders');
+
+console.log('frontend module tests passed');