rumdl 0.2.53

A fast Markdown linter written in Rust (Ru(st) MarkDown Linter)
Documentation 
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use rumdl_lib::lint_context::LintContext;
use rumdl_lib::rule::Rule;
use rumdl_lib::rules::MD035HRStyle;

#[test]
fn test_valid_hr_style() {
    let rule = MD035HRStyle::default();
    let content = "Some text\n\n---\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(result.is_empty());
}

#[test]
fn test_invalid_hr_style() {
    let rule = MD035HRStyle::new("---".to_string());
    let content = "Some text\n\n***\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
}

#[test]
fn test_default_style_is_consistent() {
    // The unconfigured rule adopts the document's own style; it does not impose one.
    // A second, disagreeing default in `MD035Config` once made `rumdl config --defaults`
    // publish `style = "---"` while every `rumdl check` ran as "consistent".
    let rule = MD035HRStyle::default();

    let uniform = "Some text\n\n***\n\nMore text\n\n***";
    let ctx = LintContext::new(uniform, rumdl_lib::config::MarkdownFlavor::Standard, None);
    assert!(
        rule.check(&ctx).unwrap().is_empty(),
        "a document consistently using *** is not a violation of the default style"
    );
    assert_eq!(
        rule.fix(&ctx).unwrap(),
        uniform,
        "the default must not rewrite *** to ---"
    );

    // Positive control: the default still enforces consistency.
    let mixed = "Some text\n\n***\n\nMore text\n\n---";
    let ctx = LintContext::new(mixed, rumdl_lib::config::MarkdownFlavor::Standard, None);
    assert!(
        !rule.check(&ctx).unwrap().is_empty(),
        "mixed styles must still be reported"
    );
    assert_eq!(rule.fix(&ctx).unwrap(), "Some text\n\n***\n\nMore text\n\n***");
}

#[test]
fn test_mixed_hr_styles() {
    let rule = MD035HRStyle::default();
    let content = "Some text\n\n---\n\nMiddle text\n\n***\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
}

#[test]
fn test_fix_hr_style() {
    let rule = MD035HRStyle::new("---".to_string());
    let content = "Some text\n\n***\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.fix(&ctx).unwrap();
    assert_eq!(result, "Some text\n\n---\n\nMore text");
}

#[test]
fn test_indented_hr() {
    let rule = MD035HRStyle::new("---".to_string());
    let content = "Some text\n\n  ***\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    assert_eq!(fixed, "Some text\n\n---\n\nMore text");
}

#[test]
fn test_spaced_hr() {
    let rule = MD035HRStyle::new("---".to_string());
    let content = "Some text\n\n* * *\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    assert_eq!(fixed, "Some text\n\n---\n\nMore text");
}

#[test]
fn test_consistent_style_first_hr_asterisks() {
    let rule = MD035HRStyle::new("consistent".to_string());
    let content = "Some text\n\n***\n\n---\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    assert_eq!(fixed, "Some text\n\n***\n\n***\n\nMore text");
}

#[test]
fn test_consistent_style_first_hr_underscores() {
    let rule = MD035HRStyle::new("consistent".to_string());
    let content = "Some text\n\n___\n\n***\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    assert_eq!(fixed, "Some text\n\n___\n\n___\n\nMore text");
}

#[test]
fn test_consistent_style_no_hr_defaults_to_dash() {
    let rule = MD035HRStyle::new("consistent".to_string());
    let content = "Some text\n\nNo HR here\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    assert_eq!(fixed, content); // No HR, so nothing to fix
}

#[test]
fn test_empty_string_style_behaves_like_consistent() {
    let rule = MD035HRStyle::new("".to_string());
    let content = "Some text\n\n***\n\n---\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    assert_eq!(fixed, "Some text\n\n***\n\n***\n\nMore text");
}

#[test]
fn test_consistent_style_most_prevalent_dash() {
    let rule = MD035HRStyle::new("consistent".to_string());
    let content = "Some text\n\n---\n\n***\n\n---\n\nMore text\n\n***";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    // '---' is most prevalent (2 vs 2, but '---' appears first)
    assert_eq!(fixed, "Some text\n\n---\n\n---\n\n---\n\nMore text\n\n---");
}

#[test]
fn test_consistent_style_most_prevalent_asterisk() {
    let rule = MD035HRStyle::new("consistent".to_string());
    let content = "Some text\n\n***\n\n---\n\n***\n\nMore text\n\n***";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    // '***' is most prevalent (3 times)
    assert_eq!(fixed, "Some text\n\n***\n\n***\n\n***\n\nMore text\n\n***");
}

#[test]
fn test_consistent_style_tie_first_encountered() {
    let rule = MD035HRStyle::new("consistent".to_string());
    let content = "Some text\n\n***\n\n---\n\n---\n\n***\n\nMore text";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    // Both '***' and '---' appear twice, but '***' is first
    assert_eq!(fixed, "Some text\n\n***\n\n***\n\n***\n\n***\n\nMore text");
}

#[test]
fn test_empty_string_style_most_prevalent() {
    let rule = MD035HRStyle::new("".to_string());
    let content = "Some text\n\n___\n\n***\n\n___\n\nMore text\n\n***";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(!result.is_empty());
    let fixed = rule.fix(&ctx).unwrap();
    // '___' is most prevalent (2 vs 2, but '___' appears first)
    assert_eq!(fixed, "Some text\n\n___\n\n___\n\n___\n\nMore text\n\n___");
}