Method _roundtrip_with_warnings

xarray/tests/test_backends.py:1213–1224

(*args, **kwargs)

    def test_roundtrip_unsigned(self, fill_value, exp_fill_warning):
        @contextlib.contextmanager
        def _roundtrip_with_warnings(*args, **kwargs):
            is_np2 = module_available("numpy", minversion="2.0.0.dev0")
            if exp_fill_warning and is_np2:
                warn_checker: contextlib.AbstractContextManager = pytest.warns(
                    SerializationWarning,
                    match="_FillValue attribute can't be represented",
                )
            else:
                warn_checker = contextlib.nullcontext()
            with warn_checker:
                with self.roundtrip(*args, **kwargs) as actual:
                    yield actual

        # regression/numpy2 test for
        encoding = {