Macro assert_logs_contain_none 

macro_rules! assert_logs_contain_none {
    ($inspector: expr, $($level:expr => $line: expr),*) => { ... };
}

Asserts that logs contain none of the expected messages All logging tests need to invoke the logging::setup_logging_test method to capture logs for assertion

Examples

    let logs = logging::setup_logging_test();

    info!("Doing stuff");
    warn!("Oops, something happened!");

    assert_logs_contain_none!(
        logs,
        Level::Info => "Nothing to see here!"
    );