Function truck_modeling::base::concat_random_test

pub fn concat_random_test<C0, C1>(curve0: &C0, curve1: &C1, trials: usize) where
    C0: Concat<C1>,
    C1: ParametricCurve<Point = <C0 as ParametricCurve>::Point, Vector = <C0 as ParametricCurve>::Vector>,
    <C0 as ParametricCurve>::Point: Debug,
    <C0 as ParametricCurve>::Point: Tolerance,
    <C0 as ParametricCurve>::Vector: Debug,
    <C0 as ParametricCurve>::Vector: Tolerance,
    <C0 as Concat<C1>>::Output: ParametricCurve,
    <C0 as Concat<C1>>::Output: Debug,
    <<C0 as Concat<C1>>::Output as ParametricCurve>::Point == <C0 as ParametricCurve>::Point,
    <<C0 as Concat<C1>>::Output as ParametricCurve>::Vector == <C0 as ParametricCurve>::Vector, 

positive test implementation for Concat.