diff --git a/__tests__/main.js b/__tests__/main.js
index 9ba064d313cf46263af811a30d229eed2be4f14f..c5d2cd994e6384d3738436a1cce0d1125281d799 100644
--- a/__tests__/main.js
+++ b/__tests__/main.js
@@ -23,3 +23,29 @@ describe('Open local HTTP server', () => {
     await expect(page).toMatchElement('a[href="./jest.json"]');
   });
 });
+
+describe('Open example', () => {
+  beforeAll(async () => {
+    await page.goto('https://example.org');
+  });
+  it('has the correct page title', async () => {
+    const title = await page.title();
+    expect(title).toBe('Example Domain');
+  });
+  it('has the main text', async () => {
+    await expect(page).toMatchElement('a[href="https://www.iana.org/domains/example"]');
+  });
+});
+
+describe('Open local HTTP server', () => {
+  beforeAll(async () => {
+    await page.goto('http://127.0.0.1:4488');
+  });
+  it('has the correct page title', async () => {
+    const title = await page.title();
+    expect(title).toBe('Index of /');
+  });
+  it('has the correct link', async () => {
+    await expect(page).toMatchElement('a[href="./jest.json"]');
+  });
+});