rumdl 0.1.88

A fast Markdown linter written in Rust (Ru(st) MarkDown Linter)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184

use rumdl_lib::lint_context::LintContext;
use rumdl_lib::rule::Rule;
use rumdl_lib::rules::MD024NoDuplicateHeading;
use std::io::Write;

#[test]
fn test_no_duplicate_headings() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading 1\n## Heading 2\n### Heading 3";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(result.is_empty());
}

#[test]
fn test_duplicate_headings() {
    let rule = MD024NoDuplicateHeading::new(false, false); // siblings_only=false to check all duplicates
    let content = "# Heading\n## Heading\n### Heading";
    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_duplicate_headings() {
    let rule = MD024NoDuplicateHeading::default();
    // Input with duplicate headings
    let content = "# Heading\n## Heading\n# Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    // There should be duplicate heading warnings before fixing
    let before = rule.check(&ctx).unwrap();
    assert!(!before.is_empty(), "Should detect duplicate headings before fix");

    // Apply the fix
    let fixed = rule.fix(&ctx).unwrap();
    // The fix should NOT change the content (MD024 does not support auto-fixing)
    assert_eq!(fixed, content, "Fix should not modify the content for MD024");
}

#[test]
fn test_md024_different_levels() {
    let rule = MD024NoDuplicateHeading::new(false, false); // siblings_only=false to check all duplicates
    let content = "# Heading\n## Heading\n### Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 2);
}

#[test]
fn test_md024_different_levels_with_allow_different_nesting() {
    let rule = MD024NoDuplicateHeading::new(true, false);
    let content = "# Heading\n## Heading\n### Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(
        result.len(),
        0,
        "Expected 0 warnings for duplicated headings with allow_different_nesting=true"
    );
}

#[test]
fn test_md024_different_case() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading\n## Subheading\n# heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 0);
}

#[test]
fn test_md024_with_setext_headings() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "Heading 1\n=========\nSome text\n\nHeading 1\n=========\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 1);
    assert_eq!(result[0].line, 5);
}

#[test]
fn test_md024_mixed_heading_styles() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading\n\nHeading\n=======\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 1);
    assert_eq!(result[0].line, 3);
}

#[test]
fn test_md024_with_empty_headings() {
    let rule = MD024NoDuplicateHeading::default();
    // Empty headings should be ignored by the rule
    let content = "#\n## \n###  \n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert!(result.is_empty());
}

#[test]
fn test_md024_in_code_blocks() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading\n\n```markdown\n# Heading\n```\n# Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 1);
    assert_eq!(result[0].line, 6);
    println!("{result:?}");
    std::io::stdout().flush().unwrap();
}

#[test]
fn test_md024_with_front_matter() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "---\ntitle: My Document\n---\n# Heading\n\nSome text\n\n# Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 1);
    assert_eq!(result[0].line, 8);
}

#[test]
fn test_md024_with_closed_atx_headings() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading #\n\n## Subheading ##\n\n# Heading #\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 1);
    assert_eq!(result[0].line, 5);
}

#[test]
fn test_md024_with_multiple_duplicates() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading\n\n## Subheading\n\n# Heading\n\n## Subheading\n\n# Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 3);
    assert_eq!(result[0].line, 5);
    assert_eq!(result[1].line, 7);
    assert_eq!(result[2].line, 9);
}

#[test]
fn test_md024_with_trailing_whitespace() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading \n\n# Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.check(&ctx).unwrap();
    assert_eq!(result.len(), 1);
    assert_eq!(result[0].line, 3);
}

#[test]
fn test_md024_performance_with_many_headings() {
    let rule = MD024NoDuplicateHeading::default();

    // Create a document with 100 unique headings
    let mut content = String::new();
    for i in 1..=100 {
        content.push_str(&format!("# Heading {i}\n\n"));
    }

    let ctx = LintContext::new(&content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let start = std::time::Instant::now();
    let result = rule.check(&ctx).unwrap();
    let duration = start.elapsed();

    assert!(result.is_empty());
    assert!(
        duration.as_millis() < 100,
        "Checking 100 unique headings should take less than 100ms"
    );
}

#[test]
fn test_md024_fix() {
    let rule = MD024NoDuplicateHeading::default();
    let content = "# Heading\n## Subheading\n# Heading\n";
    let ctx = LintContext::new(content, rumdl_lib::config::MarkdownFlavor::Standard, None);
    let result = rule.fix(&ctx).unwrap();
    assert_eq!(result, content, "Fix method should not modify content");
}