feat: add new test for 404 page

Author: carbontwelve

tests/Feature/RoutesTest.php

@@ -13,9 +13,20 @@ public function testRoute()
             'HTTP_HOST' => 'example.com',
             'REQUEST_METHOD' => 'GET',
             'REQUEST_URI' => '/',
-        ], [], [], [], []));
+        ]));
 
         $this->assertResponseOk();
-        $this->assertEquals('<h1>Hello World!</h1>', $response);
+        $this->assertEquals('<h1>Hello world!</h1>', $response);
+    }
+
+    public function testNotFoundRoute()
+    {
+        $response = $this->runRequest(ServerRequestFactory::fromGlobals([
+            'HTTP_HOST' => 'example.com',
+            'REQUEST_METHOD' => 'GET',
+            'REQUEST_URI' => '/test',
+        ]));
+        $this->assertResponseCodeEquals(404);
+        $this->assertEquals('File not found.', $response);
     }
 }