crates/android_logger/src/tests.rs

use super::*;
use log::LevelFilter;
use std::sync::atomic::{AtomicBool, Ordering};

#[test]
fn check_config_values() {
    // Filter is checked in config_filter_match below.
    let config = Config::default()
        .with_max_level(LevelFilter::Trace)
        .with_log_buffer(LogId::System)
        .with_tag("my_app");

    assert_eq!(config.log_level, Some(LevelFilter::Trace));
    assert_eq!(config.buf_id, Some(LogId::System));
    assert_eq!(config.tag, Some(CString::new("my_app").unwrap()));
}

#[test]
fn log_calls_formatter() {
    static FORMAT_FN_WAS_CALLED: AtomicBool = AtomicBool::new(false);
    let config = Config::default()
        .with_max_level(LevelFilter::Info)
        .format(|_, _| {
            FORMAT_FN_WAS_CALLED.store(true, Ordering::SeqCst);
            Ok(())
        });
    let logger = AndroidLogger::new(config);

    logger.log(&Record::builder().level(log::Level::Info).build());

    assert!(FORMAT_FN_WAS_CALLED.load(Ordering::SeqCst));
}

#[test]
fn logger_enabled_threshold() {
    let logger = AndroidLogger::new(Config::default().with_max_level(LevelFilter::Info));

    assert!(logger.enabled(&log::MetadataBuilder::new().level(log::Level::Warn).build()));
    assert!(logger.enabled(&log::MetadataBuilder::new().level(log::Level::Info).build()));
    assert!(!logger.enabled(&log::MetadataBuilder::new().level(log::Level::Debug).build()));
}

// Test whether the filter gets called correctly. Not meant to be exhaustive for all filter
// options, as these are handled directly by the filter itself.
#[test]
fn config_filter_match() {
    let info_record = Record::builder().level(log::Level::Info).build();
    let debug_record = Record::builder().level(log::Level::Debug).build();

    let info_all_filter = env_filter::Builder::new().parse("info").build();
    let info_all_config = Config::default().with_filter(info_all_filter);

    assert!(info_all_config.filter_matches(&info_record));
    assert!(!info_all_config.filter_matches(&debug_record));
}

#[test]
fn fill_tag_bytes_truncates_long_tag() {
    let too_long_tag = [b'a'; LOGGING_TAG_MAX_LEN + 20];

    let mut result = uninit_array();
    let tag = fill_tag_bytes(&mut result, &too_long_tag);

    let mut expected_result = vec![b'a'; LOGGING_TAG_MAX_LEN - 2];
    expected_result.extend("..\0".as_bytes());
    assert_eq!(tag.to_bytes_with_nul(), expected_result);
}

#[test]
fn fill_tag_bytes_keeps_short_tag() {
    let short_tag = [b'a'; 3];

    let mut result = uninit_array();
    let tag = fill_tag_bytes(&mut result, &short_tag);

    let mut expected_result = short_tag.to_vec();
    expected_result.push(0);
    assert_eq!(tag.to_bytes_with_nul(), expected_result);
}