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: proof_test.rs
    path of file: ./repos/diem/types/src/proof/unit_tests
    
    the code of the file until where you have to start completion: // Copyright (c) The Diem Core Contributors
    
fn test_verify_two_element_accumulator() {
    let element0_hash = b"hello".test_only_hash();
    let element1_hash = b"world".test_only_hash();
    let root_hash = TestAccumulatorInternalNode::new(element0_hash, element1_hash).hash();

    assert!(TestAccumulatorProof::new(vec![element1_hash])
        .verify(root_hash, element0_hash, 0)
        .is_ok());
    assert!(TestAccumulatorProof::new(vec![element0_hash])
        .verify(root_hash, element1_hash, 1)
        .is_ok());
}