def test_get_dataset(self, converted_zarr):
ed = EchoData.from_file(converted_raw_path=converted_zarr)
node = DataTree()
result = ed._EchoData__get_dataset(node)
ed_node = ed._tree['Sonar']
ed_result = ed._EchoData__get_dataset(ed_node)
assert result is None
assert isinstance(ed_result, xr.Dataset)
