From 3f360918843d098669c1460248211d5e39d7d4fe Mon Sep 17 00:00:00 2001
From: Piotr Maslanka <piotr.maslanka@henrietta.com.pl>
Date: Fri, 8 Dec 2017 17:59:02 +0100
Subject: [PATCH] len

---
 tests/test_series/test_series.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/test_series/test_series.py b/tests/test_series/test_series.py
index 1ee2f7d..833ce84 100644
--- a/tests/test_series/test_series.py
+++ b/tests/test_series/test_series.py
@@ -10,3 +10,6 @@ class TestSeries(unittest.TestCase):
 
         ds = DataSeries()
         self.assertAlmostEqual(ds.length(), 0.0)
+
+        ds = DataSeries([[0,1], [10,2]])
+        self.assertAlmostEqual(ds.length(), 10.0)
-- 
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