styled-str 0.5.0

Tools for parsing and managing ANSI-styled strings
Documentation 
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use assert_matches::assert_matches;

use super::*;

#[test]
fn tokenization_works() {
    let mut cursor = StrCursor::new("bold, ul");
    let token = cursor.take_token();
    assert_eq!(token, 0..4);
    assert_eq!(cursor.pos(), 4);

    let mut cursor = StrCursor::new("bold");
    let token = cursor.take_token();
    assert_eq!(token, 0..4);
    assert_eq!(cursor.pos(), 4);

    let mut cursor = StrCursor::new("bold]]");
    let token = cursor.take_token();
    assert_eq!(token, 0..4);
    assert_eq!(cursor.pos(), 4);
}

#[test]
fn parsing_style() {
    let mut cursor = StrCursor::new("bold, ul magenta on yellow!");
    let style = cursor.parse_style(&Style::new(), false).unwrap();
    let expected_style = Style::new()
        .bold()
        .underline()
        .fg_color(Some(AnsiColor::Magenta.into()))
        .bg_color(Some(AnsiColor::BrightYellow.into()));
    assert_eq!(style, expected_style);
    assert!(cursor.is_eof(), "{cursor:?}");
}

#[test]
fn parsing_style_with_complex_colors() {
    let mut cursor = StrCursor::new("dim i invert; blink; color(42) on #c0ffee]]");
    let style = cursor.parse_style(&Style::new(), true).unwrap();
    let expected_style = Style::new()
        .dimmed()
        .blink()
        .invert()
        .italic()
        .fg_color(Some(RgbColor(0, 215, 135).into()))
        .bg_color(Some(RgbColor(0xc0, 0xff, 0xee).into()));
    assert_eq!(style, expected_style);
    assert!(cursor.is_eof(), "{cursor:?}");

    let err = RichStyle::parse("bold color", &Style::new()).unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::UnfinishedColor);
    assert_eq!(err.pos(), 5..10);

    let err = RichStyle::parse("bold color on red", &Style::new()).unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::UnfinishedColor);
    assert_eq!(err.pos(), 5..10);

    let err = RichStyle::parse("bold color( on red", &Style::new()).unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::UnfinishedColor);
    assert_eq!(err.pos(), 5..11);

    let err = RichStyle::parse("bold color() on red", &Style::new()).unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::InvalidIndexColor);
    assert_eq!(err.pos(), 5..12);

    let err = RichStyle::parse("bold color(x) on red", &Style::new()).unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::InvalidIndexColor);
    assert_eq!(err.pos(), 5..13);
}

#[test]
fn standalone_style_parsing() {
    let style = RichStyle::parse("red on color7, bold", &Style::new()).unwrap();
    assert_eq!(
        style,
        Style::new()
            .bold()
            .fg_color(Some(AnsiColor::Red.into()))
            .bg_color(Some(AnsiColor::White.into()))
    );

    let err = RichStyle::parse("red on color7]], bold", &Style::new()).unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::BogusDelimiter);
    assert_eq!(err.pos(), 13..14);
}

#[test]
fn escaping_text() {
    assert_eq!(
        EscapedText::new("test: [OK]", false).to_string(),
        "test: [OK]"
    );

    assert_eq!(
        EscapedText::new("test: [[OK]]", false).to_string(),
        "test: [[[[*]]OK]]"
    );
    assert_eq!(
        EscapedText::new("test\t\n[[OK]]", true).to_string(),
        r"test\t\n[[[[*]]OK]]"
    );

    assert_eq!(
        EscapedText::new("[[OK]] test :[[[", false).to_string(),
        "[[[[*]]OK]] test :[[[[[*]]"
    );
}

#[test]
fn escape_error() {
    let err = "Hello,\u{1b}[m world".parse::<StyledString>().unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::EscapeInText);
    assert_eq!(err.pos(), 6..7);
}

#[test]
fn clear_errors() {
    let err = "[[red /]]Hello".parse::<StyledString>().unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::NonIsolatedClear);
    assert_eq!(err.pos(), 6..7);

    let err = "[[red / blue]]Hello".parse::<StyledString>().unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::NonIsolatedClear);
    assert_eq!(err.pos(), 6..7);

    let err = "[[/ red]]Hello".parse::<StyledString>().unwrap_err();
    assert_matches!(err.kind(), ParseErrorKind::NonIsolatedClear);
    assert_eq!(err.pos(), 2..3);
}