max_level_hint.rs - mozsearch

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use tracing::Level;

use tracing_mock::*;

#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]

#[test]

fn max_level_hints() {

    // This test asserts that when a subscriber provides us with the global

    // maximum level that it will enable (by implementing the

    // `Subscriber::max_level_hint` method), we will never call

    // `Subscriber::enabled` for events above that maximum level.

//

    // In this case, we test that by making the `enabled` method assert that no

    // `Metadata` for spans or events at the `TRACE` or `DEBUG` levels.

    let (subscriber, handle) = subscriber::mock()

        .with_max_level_hint(Level::INFO)

        .with_filter(|meta| {

            assert!(

                dbg!(meta).level() <= &Level::INFO,

                "a TRACE or DEBUG event was dynamically filtered: "

);

            true

})

        .event(event::mock().at_level(Level::INFO))

        .event(event::mock().at_level(Level::WARN))

        .event(event::mock().at_level(Level::ERROR))

        .done()

        .run_with_handle();

    tracing::subscriber::set_global_default(subscriber).unwrap();

    tracing::info!("doing a thing that you might care about");

    tracing::debug!("charging turboencabulator with interocitor");

    tracing::warn!("extremely serious warning, pay attention");

    tracing::trace!("interocitor charge level is 10%");

    tracing::error!("everything is on fire");

    handle.assert_finished();