test Client::send() with relative uri

Author: samsonasik

src/Client.php

@@ -903,7 +903,7 @@ public function send(Request $request = null)
                 }
             }
             // If we have no ports, set the defaults
-            if (! $uri->getPort()) {
+            if (! $uri->getPort() && $uri->isAbsolute()) {
                 $uri->setPort($uri->getScheme() == 'https' ? 443 : 80);
             }
 

test/ClientTest.php

@@ -541,4 +541,11 @@ public function testValidRelativeURI($uri, $isValidRelativeURI)
         $client = new Client($uri);
         $this->assertSame($isValidRelativeURI, $client->getUri()->isValidRelative());
     }
+
+    public function testSendRequestWithRelativeURI()
+    {
+        $client = new Client('/example');
+        $client->setAdapter(Test::class);
+        $client->send();
+    }
 }