tests: skip fdstore tests if not implemented

Should fix #12.

Author: keszybz

systemd/test/test_daemon.py

@@ -15,6 +15,15 @@
 
 import pytest
 
+@contextlib.contextmanager
+def skip_enosys():
+    try:
+        yield
+    except OSError as e:
+        if e.errno == errno.ENOSYS:
+            pytest.skip()
+        raise
+
 @contextlib.contextmanager
 def closing_socketpair(family):
     pair = socket.socketpair(family)
@@ -200,7 +209,8 @@ def test_listen_fds_default_unset():
 
 def test_notify_no_socket():
     assert notify('READY=1') == False
-    assert notify('FDSTORE=1', fds=[]) == False
+    with skip_enosys():
+        assert notify('FDSTORE=1', fds=[]) == False
     assert notify('FDSTORE=1', fds=[1,2]) == False
     assert notify('FDSTORE=1', pid=os.getpid()) == False
     assert notify('FDSTORE=1', pid=os.getpid(), fds=(1,)) == False
@@ -216,7 +226,8 @@ def test_notify_bad_socket():
     with pytest.raises(connection_error):
         notify('READY=1')
     with pytest.raises(connection_error):
-        notify('FDSTORE=1', fds=[])
+        with skip_enosys():
+            notify('FDSTORE=1', fds=[])
     with pytest.raises(connection_error):
         notify('FDSTORE=1', fds=[1,2])
     with pytest.raises(connection_error):
@@ -234,7 +245,8 @@ def test_notify_with_socket(tmpdir):
     os.environ['NOTIFY_SOCKET'] = path
 
     assert notify('READY=1') == True
-    assert notify('FDSTORE=1', fds=[]) == True
+    with skip_enosys():
+        assert notify('FDSTORE=1', fds=[]) == True
     assert notify('FDSTORE=1', fds=[1,2]) == True
     assert notify('FDSTORE=1', pid=os.getpid()) == True
     assert notify('FDSTORE=1', pid=os.getpid(), fds=(1,)) == True