From f96a131b6c6ed20ca18919f63a08d31a91ca4155 Mon Sep 17 00:00:00 2001
From: Tamas Gal <tgal@km3net.de>
Date: Mon, 10 Feb 2020 15:13:58 +0100
Subject: [PATCH] Fix python 3.8 compat for header

---
 tests/test_offline.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/test_offline.py b/tests/test_offline.py
index 09dc0b3..281bf83 100644
--- a/tests/test_offline.py
+++ b/tests/test_offline.py
@@ -222,8 +222,8 @@ class TestOfflineReader(unittest.TestCase):
         self.assertEqual(float(head['kcut']), 2)
 
         # test the warning for unsupported fheader format
-        self.assertWarns(UserWarning, self.r.header,
-                         "Your file header has an unsupported format")
+        with self.assertWarns(UserWarning):
+            self.r.header
 
 
 class TestOfflineEvents(unittest.TestCase):
-- 
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