def METHOD_NAME():
    assert get_pod_from_dn(None) is None
    assert get_pod_from_dn("") is None
    assert get_pod_from_dn("pod-") is None
    assert get_pod_from_dn("pod-aa") is None
    assert get_pod_from_dn("pod-1") == "1"
    assert get_pod_from_dn("pod-100") == "100"
    assert get_pod_from_dn("aapod-1") == "1"
    assert get_pod_from_dn("aapod-1aaa") == "1"
    assert get_pod_from_dn("pod-1pod-2") == "1"