You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: rng_test.rs
    path of file: ./repos/tock/boards/imix/src/test
    
    the code of the file until where you have to start completion: // Licensed under the Apache License, Version 2.0 or the MIT License.
// SPDX-License-Identifier: Apache-2.0 OR MIT
// Copyright Tock Contributors 2022.

//! This tests an underlying 32-bit entropy generator and the library
//! transformations between 8-bit and 32-bit entropy. To run this test,
//! add this line to the imix boot sequence:
//! ```
//!     test::rng_test::run_entropy32();
//! ```
//! This test takes a 32-bit entropy generator, puts its output into a

    
unsafe fn static_init_test_entropy32(trng: &'static Trng) -> &'static TestRng<'static> {
    let e1 = static_init!(
        rng::Entropy32To8<'static, Trng>,
        rng::Entropy32To8::new(trng)
    );
    trng.set_client(e1);
    let e2 = static_init!(
        rng::Entropy8To32<'static, rng::Entropy32To8<'static, Trng>>,
        rng::Entropy8To32::new(e1)
    );
    e1.set_client(e2);
    let er = static_init!(
        rng::Entropy32ToRandom<
            'static,
            rng::Entropy8To32<'static, rng::Entropy32To8<'static, Trng>>,
        >,
        rng::Entropy32ToRandom::new(e2)
    );
    e2.set_client(er);
    let test = static_init!(TestRng<'static>, TestRng::new(er));
    er.set_client(test);
    test
}