diff --git a/tests/Coroutine/ContextTest.php b/tests/Coroutine/ContextTest.php
index fcc29b5..9d9e99f 100644
--- a/tests/Coroutine/ContextTest.php
+++ b/tests/Coroutine/ContextTest.php
@@ -56,25 +56,41 @@ public function testGetDataKeyInCoroutine()
     {
         $data1 = null;
         $data2 = null;
+        $data3 = null;
+
         $coroutineId1 = null;
         $coroutineId2 = null;
-        \Swoole\Coroutine\run(function () use (&$data1, &$data2, &$coroutineId1, &$coroutineId2) {
+        $coroutineId3 = null;
+
+        \Swoole\Coroutine\run(function () use (&$data1, &$data2, &$data3, &$coroutineId1, &$coroutineId2, &$coroutineId3) {
             Context::setData('foo', 'bar');
 
             $data1 = Context::getData('foo');
             $data2 = 'baz';
+            $data2 = 'swoole';
+
             $coroutineId1 = Context::getRequestedCoroutineId();
             $coroutineId2 = -1;
+            $coroutineId3 = -1;
 
-            go(function () use (&$data2, &$coroutineId2) {
+            go(function () use (&$data2, &$data3, &$coroutineId2, &$coroutineId3) {
                 $data2 = Context::getData('foo');
                 $coroutineId2 = Context::getRequestedCoroutineId();
+
+                // test nested coroutine
+                go(function () use (&$data3, &$coroutineId3) {
+                    $data3 = Context::getData('foo');
+                    $coroutineId3 = Context::getRequestedCoroutineId();
+                });
             });
         });
 
         $this->assertSame('bar', $data1);
         $this->assertSame($data1, $data2);
+        $this->assertSame($data2, $data3);
         $this->assertSame($coroutineId1, $coroutineId2);
+        $this->assertSame($coroutineId2, $coroutineId3);
+
     }
 
     public function testClear()