def METHOD_NAME():
    mock = MagicMock()
    with patch.dict(mdadm.__salt__, {"cmd.run": mock}):
        ret = mdadm.create(
            "/dev/md0",
            5,
            devices=["/dev/sdb1", "/dev/sdc1", "/dev/sdd1"],
            force=True,
            chunk=256,
            test_mode=True,
        )
        assert sorted(
            "mdadm -C /dev/md0 -R -v --chunk 256 "
            "--force -l 5 -e default -n 3 "
            "/dev/sdb1 /dev/sdc1 /dev/sdd1".split()
        ) == sorted(ret.split())
        assert not mock.called, "test mode failed, cmd.run called"