diff --git a/conf/local_macos/test_co.conf b/conf/local_macos/test.conf
similarity index 74%
rename from conf/local_macos/test_co.conf
rename to conf/local_macos/test.conf
index 8bd1797..3d75b57 100644
--- a/conf/local_macos/test_co.conf
+++ b/conf/local_macos/test.conf
@@ -9,5 +9,9 @@ server {
     location /api/ngx/test/co {
         content_by_lua_file $resty_loc/nginx/scripts/tests/co.lua;
     }
+
+    location /api/ngx/test/popen {
+        content_by_lua_file $resty_loc/nginx/scripts/tests/popen.lua;
+    }
 }
 
diff --git a/test_scripts/popen.lua b/test_scripts/popen.lua
new file mode 100644
index 0000000..6662cab
--- /dev/null
+++ b/test_scripts/popen.lua
@@ -0,0 +1,4 @@
+io.popen("sleep 3; echo hello>/tmp/foo.txt")
+
+ngx.say("main")
+