Correct first target state filename

chainsyncer/store/fs.py

@@ -236,9 +236,9 @@ class SyncFsStore:
             self.item_keys.append(block_number)
             logg.info('added existing {}'.format(o))
 
-        fp = os.path.join(self.session_path, str(target))
+        fp = os.path.join(self.session_path, 'target')
         if len(thresholds) == 0:
-            logg.info('syncer first run')
+            logg.info('syncer first run target {}'.format(target))
             self.first = True
             f = open(fp, 'w')
             f.write(str(target))

tests/test_fs.py

@@ -203,5 +203,20 @@ class TestFs(unittest.TestCase):
         o = store.get(2)
 
 
+    def test_sync_history_interrupted(self):
+        store = SyncFsStore(self.path, session_id='foo')
+        session = SyncSession(store)
+
+        session.start(target=13)
+        o = session.get(0)
+        o.next(advance_block=True)
+        o.next(advance_block=True)
+        session.stop(o)
+
+        store = SyncFsStore(self.path, session_id='foo')
+        store.start()
+        o = store.get(0)
+
+
 if __name__ == '__main__':
     unittest.main()