def METHOD_NAME(self):
    disordered_struct = Structure(
        [[10, 0, 0], [0, 10, 0], [0, 0, 10]],
        [{"Cu": 0.25, "Au": 0.75}],
        [[0, 0, 0]],
    )
    formula_plain = disordered_formula(disordered_struct, fmt="plain")
    formula_latex = disordered_formula(disordered_struct, fmt="LaTeX")
    formula_html = disordered_formula(disordered_struct, fmt="HTML")
    assert formula_plain == "CuxAu1-x x=0.25"
    assert formula_latex == "Cu_{x}Au_{1-x} x=0.25"
    assert formula_html == "Cu<sub>x</sub>Au<sub>1-x</sub> x=0.25"