Updated tests with localization

test/i18n.test.js

@@ -26,18 +26,22 @@ test('language changes translate visible and spoken labels through textContent a
   const i18n = await loadI18n({});
   const make = key => ({ textContent: '', attributes: new Map(key), getAttribute(name) { return this.attributes.get(name); }, setAttribute(name, value) { this.attributes.set(name, value); } });
   const text = make([['data-i18n', 'app.strecke.wahlen']]);
-  const label = make([['data-i18n-aria-label', 'app.strecke.wahlen']]);
+  const attributes = ['aria-label', 'title', 'placeholder', 'alt'];
+  const labels = new Map(attributes.map(attribute => [attribute, make([[`data-i18n-${attribute}`, 'app.strecke.wahlen']])]));
   const root = { documentElement: {}, querySelectorAll(selector) {
     if (selector === '[data-i18n]') return [text];
-    if (selector === '[data-i18n-aria-label]') return [label];
+    for (const [attribute, label] of labels) {
+      if (selector === `[data-i18n-${attribute}]`) return [label];
+    }
     return [];
   } };
   i18n.apply(root);
   assert.equal(text.textContent, 'Strecke wählen');
-  assert.equal(label.attributes.get('aria-label'), 'Strecke wählen');
+  for (const [attribute, label] of labels) assert.equal(label.attributes.get(attribute), 'Strecke wählen');
   i18n.register('en', { 'app.strecke.wahlen': '<Choose a trail>' });
   i18n.setLanguage('en', root);
   assert.equal(text.textContent, '<Choose a trail>');
+  for (const [attribute, label] of labels) assert.equal(label.attributes.get(attribute), '<Choose a trail>');
   assert.equal(root.documentElement.lang, 'en');
   assert.equal(text.attributes.get('data-i18n'), 'app.strecke.wahlen');
 });