def django_testdir_initial(django_testdir):
    """A django_testdir fixture which provides initial_data."""
    django_testdir.project_root.join("tpkg/app/migrations").remove()
    django_testdir.makefile(
        ".json",
        initial_data="""
        [{
            "pk": 1,
            "model": "app.item",
            "fields": { "name": "mark_initial_data" }
        }]""",
    )

    return django_testdir