Check DirectoryNotFound in case of too many keys.

slapos/libnetworkcachetests.py

@@ -264,6 +264,23 @@ class OnlineTest(OnlineMixin, unittest.TestCase):
       self.assertEqual(error.code, httplib.NOT_FOUND)
 
 
+  def test_select_DirectoryNotFound_too_many_for_key(self):
+    nc = slapos.libnetworkcache.NetworkcacheClient(self.shacache, self.shadir)
+    key = 'somekey' + str(random.random())
+    urlmd5 = str(random.random())
+    file_name='my file'
+    test_data = tempfile.TemporaryFile()
+    test_string = str(random.random())
+    test_data.write(self.test_string)
+    test_data.seek(0)
+    nc.upload(self.test_data, key, urlmd5=urlmd5, file_name=file_name)
+    nc.upload(test_data, key, urlmd5=urlmd5, file_name=file_name)
+    try:
+      nc.select(key)
+    except slapos.libnetworkcache.DirectoryNotFound, msg:
+      self.assertTrue(
+        str(msg).startswith("Too many entries for a given key %r"% key))
+
 def _run_nc_POST200(tree, host, port):
   server_address = (host, port)
   httpd = Server(tree, server_address, NCHandlerPOST200)