ceph-volume tests update tests to handle new SystemExit exceptions in…

… main

Signed-off-by: Alfredo Deza <adeza@redhat.com>

src/ceph-volume/ceph_volume/tests/test_main.py

@@ -6,18 +6,21 @@
 class TestVolume(object):
 
     def test_main_spits_help_with_no_arguments(self, capsys):
-        main.Volume(argv=[])
+        with pytest.raises(SystemExit):
+            main.Volume(argv=[])
         stdout, stderr = capsys.readouterr()
         assert 'Log Path' in stdout
 
     def test_warn_about_using_help_for_full_options(self, capsys):
-        main.Volume(argv=[])
+        with pytest.raises(SystemExit):
+            main.Volume(argv=[])
         stdout, stderr = capsys.readouterr()
         assert 'See "ceph-volume --help" for full list' in stdout
 
     def test_environ_vars_show_up(self, capsys):
         os.environ['CEPH_CONF'] = '/opt/ceph.conf'
-        main.Volume(argv=[])
+        with pytest.raises(SystemExit):
+            main.Volume(argv=[])
         stdout, stderr = capsys.readouterr()
         assert 'CEPH_CONF' in stdout
         assert '/opt/ceph.conf' in stdout