Add additional tests

test/e2e/app-dir/error-boundary-and-not-found-linking/app/page.tsx

@@ -1,3 +1,19 @@
+import Link from 'next/link'
+
 export default function Page() {
-  return <h1 id="homepage">Home</h1>
+  return (
+    <>
+      <h1 id="homepage">Home</h1>
+      <div>
+        <Link href="/trigger-404" id="trigger-404-link">
+          Navigate to trigger-404 page
+        </Link>
+      </div>
+      <div>
+        <Link href="/testabc" id="non-existent-link">
+          Navigate to non-existent page
+        </Link>
+      </div>
+    </>
+  )
 }

test/e2e/app-dir/error-boundary-and-not-found-linking/error-boundary-and-not-found-linking.test.ts

@@ -66,5 +66,39 @@ createNextDescribe(
         .back()
         .waitForElementByCss('#not-found-component')
     })
+
+    it('should allow navigating to a page calling notfound', async () => {
+      const browser = await next.browser('/')
+
+      await browser
+        .elementByCss('#trigger-404-link')
+        .click()
+        .waitForElementByCss('#not-found-component')
+
+      expect(await browser.elementByCss('#not-found-component').text()).toBe(
+        'Not Found!'
+      )
+
+      await browser.back().waitForElementByCss('#homepage')
+
+      expect(await browser.elementByCss('#homepage').text()).toBe('Home')
+    })
+
+    it('should allow navigating to a non-existent page', async () => {
+      const browser = await next.browser('/')
+
+      await browser
+        .elementByCss('#non-existent-link')
+        .click()
+        .waitForElementByCss('#not-found-component')
+
+      expect(await browser.elementByCss('#not-found-component').text()).toBe(
+        'Not Found!'
+      )
+
+      await browser.back().waitForElementByCss('#homepage')
+
+      expect(await browser.elementByCss('#homepage').text()).toBe('Home')
+    })
   }
 )