diff --git a/test/Context/ForkContextTest.php b/test/Context/ForkContextTest.php
index c662b88..47604a1 100644
--- a/test/Context/ForkContextTest.php
+++ b/test/Context/ForkContextTest.php
@@ -28,4 +28,10 @@ public function testThrowingProcessOnSend(): void
         // tmp
         $this->expectNotToPerformAssertions();
     }
+
+    public function testImmediateJoin(): void
+    {
+        // tmp
+        $this->expectNotToPerformAssertions();
+    }
 }