Implement rocksdb and default test

tests/test_rocksdb.py

@@ -0,0 +1,37 @@
+# standard imports
+import unittest
+import tempfile
+import shutil
+import logging
+import stat
+import os
+
+# local imports
+from chainsyncer.store.rocksdb import SyncRocksDbStore
+from chainsyncer.session import SyncSession
+from chainsyncer.error import (
+        LockError,
+        FilterDone,
+        IncompleteFilterError,
+        SyncDone,
+        )
+from chainsyncer.unittest import MockFilter
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+class TestFs(unittest.TestCase):
+
+    def setUp(self):
+        self.path = tempfile.mkdtemp()
+
+
+    def test_default(self):
+        store = SyncRocksDbStore(self.path)
+        store.start(42)
+        self.assertTrue(store.first)
+
+
+if __name__ == '__main__':
+    unittest.main()