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: ui.rs
    path of file: ./repos/ouch/tests
    
    the code of the file until where you have to start completion: /// Snapshot tests for Ouch's output.
///
/// See CONTRIBUTING.md for a brief gu
    
fn ui_test_err_missing_files() {
    let (_dropper, dir) = testdir().unwrap();

    ui!(run_ouch("ouch compress a b", dir));
    ui!(run_ouch("ouch decompress a b", dir));
    ui!(run_ouch("ouch list a b", dir));
}