def METHOD_NAME():
    file = "tests/data/polyphasegenetic.ped1.txt"
    samples = ["Parent_A", "Parent_B"]
    parents = ["Parent_A", "Parent_B", "p1", "p2", "p3", "p4"]
    samples, sam_to_cop, sam_to_prog = determine_pedigree(file, samples, parents)
    assert sam_to_cop["Parent_B"] == "Parent_A"
    assert sam_to_prog["Parent_B"] == sam_to_prog["Parent_A"] == ["p1", "p2", "p3", "p4"]