Added test case.

CHANGELOG.md

@@ -1,5 +1,9 @@
 # v1.1.33 - TBD
 
+## Fixed
+
+- [#1917](https://github.com/hyperf/hyperf/pull/1917) Fixed bug that `Request::isXmlHttpRequest` does not work.
+
 ## Optimized
 
 - [#1793](https://github.com/hyperf/hyperf/pull/1793) Socket.io server now only dispatch connect/disconnect events in onOpen and onClose. Also upgrade some class members from private to protected, so users can hack them.

src/http-message/tests/MessageTraitTest.php

@@ -12,6 +12,7 @@ declare(strict_types=1);
 namespace HyperfTest\HttpMessage;
 
 use Hyperf\HttpMessage\Base\Request;
+use Hyperf\HttpMessage\Server\Request as ServerRequest;
 use PHPUnit\Framework\TestCase;
 
 /**
@@ -38,4 +39,13 @@ class MessageTraitTest extends TestCase
         $this->assertSame('1000', $request->getHeaderLine('1000'));
         $this->assertSame('XMLHttpRequest', $request->getHeaderLine('X-Requested-With'));
     }
+
+    public function testIsXmlHttpRequest()
+    {
+        $request = new ServerRequest('GET', '/', [
+            'X-Requested-With' => 'XMLHttpRequest',
+        ]);
+
+        $this->assertTrue($request->isXmlHttpRequest());
+    }
 }