diff --git a/scrapy/tests/test_contrib_spiderstate.py b/scrapy/tests/test_contrib_spiderstate.py
new file mode 100644
index 000000000..e340b489a
--- /dev/null
+++ b/scrapy/tests/test_contrib_spiderstate.py
@@ -0,0 +1,27 @@
+import os
+from datetime import datetime
+from twisted.trial import unittest
+
+from scrapy.contrib.spiderstate import SpiderState
+from scrapy.spider import BaseSpider
+
+
+class SpiderStateTest(unittest.TestCase):
+
+    def test_store_load(self):
+        jobdir = self.mktemp()
+        os.mkdir(jobdir)
+        spider = BaseSpider(name='default')
+        dt = datetime.now()
+
+        ss = SpiderState(jobdir)
+        ss.spider_opened(spider)
+        spider.state['one'] = 1
+        spider.state['dt'] = dt
+        ss.spider_closed(spider)
+
+        spider2 = BaseSpider(name='default')
+        ss2 = SpiderState(jobdir)
+        ss2.spider_opened(spider2)
+        self.assertEqual(spider.state, {'one': 1, 'dt': dt})
+        ss2.spider_closed(spider2)