From c67fa0636936abb7c303c35812a895861454807f Mon Sep 17 00:00:00 2001
From: Piotr Maslanka <piotr.maslanka@henrietta.com.pl>
Date: Fri, 8 Dec 2017 21:38:25 +0100
Subject: [PATCH] test

---
 tests/test_series/test_range.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/test_series/test_range.py b/tests/test_series/test_range.py
index 1966cf8..924d9b7 100644
--- a/tests/test_series/test_range.py
+++ b/tests/test_series/test_range.py
@@ -14,6 +14,10 @@ class TestRange(unittest.TestCase):
         if bool(Range(b).intersection(a)) != val:
             self.fail('%s ^ %s != %s' % (Range(b), Range(a), val))
 
+    def test_isempty(self):
+        self.assertTrue(Range(-1,-1,False,False).is_empty())
+        self.assertFalse(Range(-1,-1,False,True).is_empty())
+
     def test_intersection(self):
         self.do_intersect(Range(-10, -1, True, True), '<2;3>', False)
         self.do_intersect(Range(-10, -1, True, False), '(-1;3>', False)
-- 
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