def test_no_channels_in_container(self, mock_get_channel_ids):
"""Return empty list if channel_ids list is empty
"""
mock_get_channel_ids.return_value = []
gwyfile = Mock(spec=Gwyfile)
channels = GwyContainer._dump_channels(gwyfile)
self.assertEqual(channels, [])
def test_convert_channel_ids_to_GwyChannel_list(self,
mock_get_channel_ids,
mock_GwyChannel):
"""Convert list of channel_ids to list of GwyChannel objects
and return the latter
"""
channel_ids = [0, 1, 2]
mock_get_channel_ids.return_value = channel_ids
gwyfile = Mock(spec=Gwyfile)
channels = GwyContainer._dump_channels(gwyfile)
self.assertListEqual(channels,
[mock_GwyChannel.from_gwy(gwyfile, channel_id)
for channel_id in channel_ids])