diff --git a/tests/SwooleClientTest.php b/tests/SwooleClientTest.php
index 9adc8cd71..6547357fd 100644
--- a/tests/SwooleClientTest.php
+++ b/tests/SwooleClientTest.php
@@ -13,7 +13,7 @@
 
 class SwooleClientTest extends TestCase
 {
-    public function test_marshal_request_method_marshals_proper_illuminate_request()
+    public function test_marshal_request_method_marshals_proper_illuminate_request(): void
     {
         $client = new SwooleClient;
 
@@ -57,7 +57,7 @@ public function rawContent()
         $this->assertSame($givenContext, $context);
     }
 
-    public function test_can_serve_static_files_if_configured_to_and_file_is_within_public_directory()
+    public function test_can_serve_static_files_if_configured_to_and_file_is_within_public_directory(): void
     {
         $client = new SwooleClient;
 
@@ -71,7 +71,7 @@ public function test_can_serve_static_files_if_configured_to_and_file_is_within_
         $this->assertTrue($client->canServeRequestAsStaticFile($request, $context));
     }
 
-    public function test_cant_serve_static_files_if_file_is_outside_public_directory()
+    public function test_cant_serve_static_files_if_file_is_outside_public_directory(): void
     {
         $client = new SwooleClient;
 
@@ -85,7 +85,7 @@ public function test_cant_serve_static_files_if_file_is_outside_public_directory
         $this->assertFalse($client->canServeRequestAsStaticFile($request, $context));
     }
 
-    public function test_cant_serve_static_files_if_file_has_forbidden_extension()
+    public function test_cant_serve_static_files_if_file_has_forbidden_extension(): void
     {
         $client = new SwooleClient;
 
@@ -100,7 +100,7 @@ public function test_cant_serve_static_files_if_file_has_forbidden_extension()
     }
 
     /** @doesNotPerformAssertions @test */
-    public function test_static_file_can_be_served()
+    public function test_static_file_can_be_served(): void
     {
         $client = new SwooleClient;
 
@@ -119,7 +119,8 @@ public function test_static_file_can_be_served()
         $client->serveStaticFile($request, $context);
     }
 
-    public function test_static_file_headers_can_be_sent()
+    /** @doesNotPerformAssertions @test */
+    public function test_static_file_headers_can_be_sent(): void
     {
         $client = new SwooleClient;
 
@@ -145,7 +146,7 @@ public function test_static_file_headers_can_be_sent()
         $client->serveStaticFile($request, $context);
     }
 
-    public function test_can_serve_static_files_through_symlink()
+    public function test_can_serve_static_files_through_symlink(): void
     {
         $client = new SwooleClient;
 
@@ -159,7 +160,7 @@ public function test_can_serve_static_files_through_symlink()
         $this->assertTrue($client->canServeRequestAsStaticFile($request, $context));
     }
 
-    public function test_cant_serve_static_files_through_symlink_using_directory_traversal()
+    public function test_cant_serve_static_files_through_symlink_using_directory_traversal(): void
     {
         $client = new SwooleClient;
 
@@ -174,13 +175,11 @@ public function test_cant_serve_static_files_through_symlink_using_directory_tra
     }
 
     /** @doesNotPerformAssertions @test */
-    public function test_respond_method_sends_response_to_swoole()
+    public function test_respond_method_sends_response_to_swoole(): void
     {
-        $client = new SwooleClient;
+        $this->createApplication();
 
-        if (extension_loaded('openswoole')) {
-            $this->markTestSkipped('This test is not compatible with Open Swoole');
-        }
+        $client = new SwooleClient;
 
         $swooleResponse = Mockery::mock('Swoole\Http\Response');
 
@@ -203,14 +202,10 @@ public function test_respond_method_sends_response_to_swoole()
     }
 
     /** @doesNotPerformAssertions @test */
-    public function test_respond_method_send_streamed_response_to_swoole()
+    public function test_respond_method_send_streamed_response_to_swoole(): void
     {
         $client = new SwooleClient;
 
-        if (extension_loaded('openswoole')) {
-            $this->markTestSkipped('This test is not compatible with Open Swoole');
-        }
-
         $swooleResponse = Mockery::mock('Swoole\Http\Response');
 
         $swooleResponse->shouldReceive('status')->once()->with(200);
@@ -228,14 +223,10 @@ public function test_respond_method_send_streamed_response_to_swoole()
     }
 
     /** @doesNotPerformAssertions @test */
-    public function test_respond_method_with_laravel_specific_status_code_sends_response_to_swoole()
+    public function test_respond_method_with_laravel_specific_status_code_sends_response_to_swoole(): void
     {
         $client = new SwooleClient;
 
-        if (extension_loaded('openswoole')) {
-            $this->markTestSkipped('This test is not compatible with Open Swoole');
-        }
-
         $swooleResponse = Mockery::mock('Swoole\Http\Response');
 
         $swooleResponse->shouldReceive('status')->once()->with(419, 'Page Expired');
@@ -251,14 +242,10 @@ public function test_respond_method_with_laravel_specific_status_code_sends_resp
     }
 
     /** @doesNotPerformAssertions @test */
-    public function test_error_method_sends_error_response_to_swoole()
+    public function test_error_method_sends_error_response_to_swoole(): void
     {
         $client = new SwooleClient;
 
-        if (extension_loaded('openswoole')) {
-            $this->markTestSkipped('This test is not compatible with Open Swoole');
-        }
-
         $swooleResponse = Mockery::spy('Swoole\Http\Response');
 
         $app = $this->createApplication();
@@ -275,14 +262,10 @@ public function test_error_method_sends_error_response_to_swoole()
     }
 
     /** @doesNotPerformAssertions @test */
-    public function test_error_method_sends_detailed_error_response_to_swoole_in_debug_mode()
+    public function test_error_method_sends_detailed_error_response_to_swoole_in_debug_mode(): void
     {
         $client = new SwooleClient;
 
-        if (extension_loaded('openswoole')) {
-            $this->markTestSkipped('This test is not compatible with Open Swoole');
-        }
-
         $swooleResponse = Mockery::spy('Swoole\Http\Response');
 
         $app = $this->createApplication();