skip another multi-volume unittest that gives warning/raises error if compressing

diff --git a/testing/test_deltatar.py b/testing/test_deltatar.py
index 4fac62f..0c6fa9b 100644 (file)
--- a/testing/test_deltatar.py
+++ b/testing/test_deltatar.py
@@ -489,6 +489,10 @@ class DeltaTarTest(BaseTest):
         Creates a full backup without any filtering with multiple volumes and
         restore it.
         '''
+        if self.MODE.startswith(':') or self.MODE.startswith('|'):
+            raise SkipTest('this test only works for uncompressed '
+                           'or concat compressed modes')
+
         password, paramversion = self.ENCRYPTION or (None, None)
         deltatar = DeltaTar(mode=self.MODE, password=password,
                             crypto_paramversion=paramversion,