def METHOD_NAME():
    partition_key_range = ExtPartitionKeyRange(start="foo", end="foo")
    context = _make_external_execution_context(
        partition_key="foo",
        partition_key_range=partition_key_range,
        partition_time_window=None,
    )
    assert context.is_partition_step
    assert context.partition_key == "foo"
    assert context.partition_key_range == partition_key_range
    assert context.partition_time_window is None