Add cors proxy prober on apps.wikitree.com

tests/probers/wikitree-cors-gedcom.spec.ts

@@ -0,0 +1,34 @@
+import {expect, test} from '@playwright/test';
+
+/**
+ * Prober: WikiTree GEDCOM + CORS proxy
+ *
+ * Loads a GEDCOM file from a raw GitHub URL through the app deployed on
+ * apps.wikitree.com. Even though the app is on the WikiTree domain,
+ * GEDCOM-from-URL always uses the CORS proxy by default. This confirms
+ * the CORS proxy is reachable from the WikiTree deployment.
+ */
+test('WikiTree CORS proxy prober', async ({page}) => {
+  await page.goto(
+    'https://apps.wikitree.com/apps/wiech13/topola-viewer/#/view?url=https://raw.githubusercontent.com/PeWu/topola-viewer/master/src/datasource/testdata/test.ged&indi=I1',
+  );
+
+  // Wait for the app to reach SHOWING_CHART state.
+  await expect(page.locator('#content')).toBeVisible();
+
+  // Assert the expected person's name appears in the chart SVG.
+  await expect(page.locator('#chart')).toContainText('Bonifacy');
+
+  // Assert the expected person's name appears in the side panel.
+  // Scoped to div.details to avoid matching <text class="details sex"> SVG
+  // elements in the chart that also carry the "details" class.
+  await expect(page.locator('div.details')).toContainText('Bonifacy');
+
+  // Assert no fatal error is displayed (replaces chart when state is ERROR).
+  await expect(page.locator('.ui.error.message')).not.toBeVisible();
+
+  // Assert no popup error is displayed.
+  // ErrorPopup uses Semantic UI React's <Portal>, which renders at
+  // document.body level, not inside #content.
+  await expect(page.locator('.ui.errorPopup.message')).not.toBeVisible();
+});