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: quiet.rs
    path of file: ./repos/dotenv-linter/dotenv-linter/tests/flags
    
    the code of the file until where you have to start completion: use crate::common::*;

#[test]
fn check_output_in_quiet_mode() {
    let test_dir = Test
    
fn check_output_for_multiple_files_in_quiet_mode() {
    let test_dir = TestDir::new();
    let testfile_1 = test_dir.create_testfile(".env", "BAR='Baz'\n");
    let testfile_2 = test_dir.create_testfile(".env2", " BAR=\n");

    let args = &["--quiet"];
    let expected_output = format!(
        "{a}:1 QuoteCharacter: The value has quote characters (\', \")\n{b}:1 LeadingCharacter: Invalid leading character detected\n",
        a=testfile_1.shortname_as_str(),
        b=testfile_2.shortname_as_str()
    );

    test_dir.test_command_fail_with_args(args, expected_output);
}