Add test for query param bug #15233 (#15238)

Fixes https://github.com/vercel/next.js/issues/15233

test/integration/link-with-encoding/pages/index.js

@@ -30,6 +30,10 @@ const Home = () => (
     >
       <a id="single-colon">Single: :</a>
     </Link>
+    <br />
+    <Link href="/query?id=http://example.com/">
+      <a id="url-param">Url query param</a>
+    </Link>
   </div>
 )
 

test/integration/link-with-encoding/pages/query.js

+export function getServerSideProps({ query }) {
+  return { props: query }
+}
+
+export default function Single(props) {
+  return <pre id="query-content">{JSON.stringify(props)}</pre>
+}

test/integration/link-with-encoding/test/index.test.js

@@ -295,5 +295,19 @@ describe('Link Component with Encoding', () => {
         await browser.close()
       }
     })
+
+    it('should have correct parsing of url query params', async () => {
+      const browser = await webdriver(appPort, '/')
+      try {
+        await browser.waitForElementByCss('#url-param').click()
+        const content = await browser
+          .waitForElementByCss('#query-content')
+          .text()
+        const query = JSON.parse(content)
+        expect(query).toHaveProperty('id', 'http://example.com/')
+      } finally {
+        await browser.close()
+      }
+    })
   })
 })