// file: crates/ksp-logging-lib/unit_tests/writer.rs
// version: 3

#[test]
fn ansi_writer_strips_csi_sequences() {
    let mut writer = crate::StripAnsiWriter::new(std::vec::Vec::<u8>::new());
    let write_result = std::io::Write::write_all(&mut writer, b"before\x1b[31mred\x1b[0mafter");
    assert!(write_result.is_ok());
    assert_eq!(writer.into_inner(), b"beforeredafter");
}

#[test]
fn ansi_writer_preserves_state_across_split_writes() {
    let mut writer = crate::StripAnsiWriter::new(std::vec::Vec::<u8>::new());
    let first = std::io::Write::write_all(&mut writer, b"a\x1b[");
    let second = std::io::Write::write_all(&mut writer, b"32mb");
    assert!(first.is_ok());
    assert!(second.is_ok());
    assert_eq!(writer.into_inner(), b"ab");
}

#[test]
fn ansi_writer_strips_osc_sequences_terminated_by_bell_or_st() {
    let mut writer = crate::StripAnsiWriter::new(std::vec::Vec::<u8>::new());
    let first = std::io::Write::write_all(&mut writer, b"a\x1b]0;title\x07b");
    let second = std::io::Write::write_all(&mut writer, b"c\x1b]8;;https://example.invalid\x1b\\d");
    assert!(first.is_ok());
    assert!(second.is_ok());
    assert_eq!(writer.into_inner(), b"abcd");
}

#[test]
fn output_level_routing_covers_all_filter_levels() {
    assert!(!super::level_is_enabled(&tracing::Level::ERROR, crate::LogFilterLevel::Off));
    assert!(super::level_is_enabled(&tracing::Level::ERROR, crate::LogFilterLevel::Error));
    assert!(!super::level_is_enabled(&tracing::Level::WARN, crate::LogFilterLevel::Error));
    assert!(super::level_is_enabled(&tracing::Level::WARN, crate::LogFilterLevel::Warn));
    assert!(!super::level_is_enabled(&tracing::Level::INFO, crate::LogFilterLevel::Warn));
    assert!(super::level_is_enabled(&tracing::Level::INFO, crate::LogFilterLevel::Info));
    assert!(super::level_is_enabled(&tracing::Level::DEBUG, crate::LogFilterLevel::Debug));
    assert!(super::level_is_enabled(&tracing::Level::TRACE, crate::LogFilterLevel::Trace));
}

#[test]
fn disabled_routed_writer_discards_bytes_without_error() {
    let mut writer = crate::RoutedWriter::<std::vec::Vec<u8>>::Disabled;
    let write_result = std::io::Write::write_all(&mut writer, b"discarded");
    let flush_result = std::io::Write::flush(&mut writer);
    assert!(write_result.is_ok());
    assert!(flush_result.is_ok());
}