diff --git a/greentest/test__hub.py b/greentest/test__hub.py
new file mode 100644
index 0000000..af61122
--- /dev/null
+++ b/greentest/test__hub.py
@@ -0,0 +1,42 @@
+# Copyright (c) 2008 Denis Bilenko
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+import unittest
+from eventlet import api
+
+DELAY = 0.01
+
+class TestScheduleCall(unittest.TestCase):
+
+    def test_local(self):
+        lst = [1]
+        api.spawn(api.get_hub().schedule_call_local, DELAY, lst.pop)
+        api.sleep(DELAY*2)
+        assert lst == [1], lst
+
+    def test_global(self):
+        lst = [1]
+        api.spawn(api.get_hub().schedule_call_global, DELAY, lst.pop)
+        api.sleep(DELAY*2)
+        assert lst == [], lst
+
+if __name__=='__main__':
+    unittest.main()
+