Test: the saved Monitor picture with a model loaded is headed by the logo and the model and time line (NativeMonitor is not used by any screen)

apps/host/tests/split-qa2c-export.test.mjs

@@ -0,0 +1,29 @@
+// The saved Monitor picture when a model is loaded (the normal case) starts with the Strata logo alone and the models/time line.
+// (QA follow-up: it was checked with a loaded model through the real page; the picture is the one of the Monitor screen, which shows the
+// loaded models. NativeMonitor.tsx is not used by any screen, so it needs no header.)
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFile } from 'node:fs/promises';
+import { readdir } from 'node:fs/promises';
+
+const read = path => readFile(new URL(path, import.meta.url), 'utf8').then(s => s.replace(/\r\n/g, '\n'));
+
+test('with a model loaded the picture is headed by the logo and the line "<model> · <time>"; with none, "N loaded models"', async () => {
+  const source = await read('../src/screens/Monitor.tsx');
+  assert.match(source, /const scopeLabel = selectedInstance \? instanceLabel\(selectedInstance\) : `\$\{runtime\?\.instances\.length \?\? 0\} loaded models`;/);
+  const header = /\{tr\(frozen \? <header className="section-toolbar">(.*?)<\/header> : null\)\}/s.exec(source)?.[1];
+  assert.ok(header);
+  assert.match(header, /<Brand variant="lockup"/); assert.doesNotMatch(header, /<h1/);
+  assert.match(header, /frozen\.modelLabel.*frozen\.time/s);
+  assert.match(source, /setFrozen\(\{ data: structuredClone\(scoped \?\? live\), hardware: structuredClone\(inventory\), time: new Date\(\)\.toLocaleString\(localeTag\(\)\), modelLabel: scopeLabel \}\)/);
+});
+
+test('no screen renders NativeMonitor, so the Monitor screen is the only picture source', async () => {
+  const dirs = ['../src/screens/', '../src/app/', '../src/components/'];
+  for (const dir of dirs) {
+    for (const name of await readdir(new URL(dir, import.meta.url))) {
+      if (!/\.tsx?$/.test(name) || name === 'NativeMonitor.tsx') continue;
+      assert.doesNotMatch(await read(dir + name), /<NativeMonitor\b|from '\.\/NativeMonitor'|from '\.\.\/components\/NativeMonitor'/, `${dir}${name}`);
+    }
+  }
+});