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2 | 2 | //! Property-based tests for format conversion correctness |
3 | 3 |
|
4 | 4 | use formatrix_core::{ |
5 | | - ast::{Block, Document, DocumentMeta, Inline, SourceFormat}, |
6 | | - traits::{FormatHandler, Parser, ParseConfig, RenderConfig, Renderer}, |
| 5 | + ast::{DocumentMeta, SourceFormat}, |
| 6 | + traits::{Parser, ParseConfig, RenderConfig, Renderer}, |
| 7 | + formats::PlainTextHandler, |
7 | 8 | }; |
8 | 9 | use proptest::prelude::*; |
9 | 10 |
|
10 | | -// Strategies for generating test data |
11 | | -fn arb_plaintext() -> impl Strategy<Value = String> { |
12 | | - r"[a-zA-Z0-9 .,;:!?\-'\"\n]{0,500}".prop_map(|s| s.trim().to_string()) |
13 | | -} |
14 | | -
|
15 | | -fn arb_heading_level() -> impl Strategy<Value = u8> { |
16 | | - 1u8..=6 |
17 | | -} |
18 | | -
|
19 | | -fn arb_document() -> impl Strategy<Value = Document> { |
20 | | - (arb_plaintext(), arb_heading_level()) |
21 | | - .prop_map(|(content, level)| { |
22 | | - let mut blocks = vec![ |
23 | | - Block::Heading { |
24 | | - level, |
25 | | - content: vec![Inline::Text { |
26 | | - content: "Test Document".to_string(), |
27 | | - }], |
28 | | - span: None, |
29 | | - }, |
30 | | - Block::Paragraph { |
31 | | - content: vec![Inline::Text { content }], |
32 | | - span: None, |
33 | | - }, |
34 | | - ]; |
35 | | - |
36 | | - Document { |
37 | | - source_format: SourceFormat::PlainText, |
38 | | - meta: DocumentMeta { |
39 | | - title: Some("Test Document".to_string()), |
40 | | - ..Default::default() |
41 | | - }, |
42 | | - content: blocks, |
43 | | - raw_source: None, |
44 | | - } |
45 | | - }) |
46 | | -} |
47 | | - |
48 | | -#[test] |
49 | | -fn prop_plaintext_conversion_is_idempotent() { |
50 | | - proptest!(|(text in arb_plaintext())| { |
51 | | - let parser = formatrix_core::formats::PlainTextHandler::new(); |
52 | | - let config = ParseConfig::default(); |
53 | | - |
54 | | - // Parse once |
55 | | - let doc = parser.parse(&text, &config).expect("parse 1"); |
56 | | - assert!(!doc.content.is_empty(), "document should have content"); |
57 | | - }); |
58 | | -} |
59 | | - |
60 | | -#[test] |
61 | | -fn prop_empty_string_handled_gracefully() { |
62 | | - proptest!(|(text in "[ ]*")| { |
63 | | - let parser = formatrix_core::formats::PlainTextHandler::new(); |
64 | | - let config = ParseConfig::default(); |
65 | | - |
66 | | - // Empty or whitespace strings should parse without panic |
67 | | - let result = parser.parse(&text, &config); |
68 | | - assert!(result.is_ok() || result.is_err()); |
69 | | - }); |
70 | | -} |
71 | | - |
72 | | -#[test] |
73 | | -fn prop_heading_level_preserved() { |
74 | | - proptest!(|(level in 1u8..=6)| { |
75 | | - let heading = Block::Heading { |
76 | | - level, |
77 | | - content: vec![Inline::Text { |
78 | | - content: "Test".to_string(), |
79 | | - }], |
80 | | - span: None, |
81 | | - }; |
82 | | - |
83 | | - match heading { |
84 | | - Block::Heading { level: l, .. } => { |
85 | | - prop_assert_eq!(level, l); |
86 | | - } |
87 | | - _ => prop_assert!(false, "expected heading block"), |
88 | | - } |
89 | | - }); |
90 | | -} |
91 | | - |
92 | | -#[test] |
93 | | -fn prop_document_metadata_preserved() { |
94 | | - proptest!(|(title in "[a-zA-Z ]{1,50}")| { |
| 11 | +proptest! { |
| 12 | + /// Property: Plaintext parsing never panics on any input |
| 13 | + #[test] |
| 14 | + fn prop_plaintext_parse_no_panic(s in ".*") { |
| 15 | + let parser = PlainTextHandler::new(); |
| 16 | + let _result = parser.parse(&s, &ParseConfig::default()); |
| 17 | + } |
| 18 | + |
| 19 | + /// Property: Document metadata is preserved after construction |
| 20 | + #[test] |
| 21 | + fn prop_document_metadata_stable(title in "[a-zA-Z0-9 ]{0,100}") { |
95 | 22 | let meta = DocumentMeta { |
96 | 23 | title: Some(title.clone()), |
97 | | - authors: vec!["Test Author".to_string()], |
| 24 | + authors: vec!["Author".to_string()], |
98 | 25 | ..Default::default() |
99 | 26 | }; |
100 | 27 |
|
101 | 28 | prop_assert_eq!(meta.title, Some(title)); |
102 | 29 | prop_assert_eq!(meta.authors.len(), 1); |
103 | | - }); |
104 | | -} |
105 | | - |
106 | | -#[test] |
107 | | -fn prop_unicode_content_preserved() { |
108 | | - proptest!(|(text in "[\\PC]*")| { |
109 | | - let parser = formatrix_core::formats::PlainTextHandler::new(); |
110 | | - let config = ParseConfig { |
111 | | - preserve_raw_source: true, |
112 | | - ..Default::default() |
113 | | - }; |
| 30 | + } |
| 31 | + |
| 32 | + /// Property: Render config defaults are sensible |
| 33 | + #[test] |
| 34 | + fn prop_render_config_defaults_valid( |
| 35 | + _sample in prop::sample::select(vec![true; 100]) |
| 36 | + ) { |
| 37 | + let config = RenderConfig::default(); |
| 38 | + |
| 39 | + // Line width should be positive or zero |
| 40 | + prop_assert!(config.line_width >= 0); |
| 41 | + // Indent should exist |
| 42 | + prop_assert!(!config.indent.is_empty()); |
| 43 | + } |
| 44 | + |
| 45 | + /// Property: Parse config format options preserve insertion order |
| 46 | + #[test] |
| 47 | + fn prop_parse_config_options_preserved( |
| 48 | + key in "[a-z]{1,20}", |
| 49 | + value in "[a-z0-9]{1,20}" |
| 50 | + ) { |
| 51 | + let mut config = ParseConfig::default(); |
| 52 | + config.format_options.insert(key.clone(), value.clone()); |
114 | 53 |
|
115 | | - if let Ok(doc) = parser.parse(&text, &config) { |
116 | | - // Raw source should preserve original content exactly |
117 | | - if let Some(raw) = &doc.raw_source { |
118 | | - prop_assert_eq!(raw.as_str(), text.as_str()); |
119 | | - } |
120 | | - } |
121 | | - }); |
| 54 | + prop_assert_eq!(config.format_options.get(&key), Some(&value)); |
| 55 | + } |
| 56 | + |
| 57 | + /// Property: Empty input always parses successfully |
| 58 | + #[test] |
| 59 | + fn prop_empty_input_parses_ok( |
| 60 | + _sample in prop::sample::select(vec![true; 100]) |
| 61 | + ) { |
| 62 | + let parser = PlainTextHandler::new(); |
| 63 | + let result = parser.parse("", &ParseConfig::default()); |
| 64 | + prop_assert!(result.is_ok()); |
| 65 | + } |
| 66 | + |
| 67 | + /// Property: Round-trip preserves block count |
| 68 | + #[test] |
| 69 | + fn prop_roundtrip_block_count( |
| 70 | + para1 in "[a-zA-Z0-9 ]{1,50}", |
| 71 | + para2 in "[a-zA-Z0-9 ]{1,50}" |
| 72 | + ) { |
| 73 | + let parser = PlainTextHandler::new(); |
| 74 | + let renderer = PlainTextHandler::new(); |
| 75 | + |
| 76 | + let input = format!("{}\n\n{}", para1, para2); |
| 77 | + let parse_config = ParseConfig::default(); |
| 78 | + let render_config = RenderConfig::default(); |
| 79 | + |
| 80 | + let doc = parser.parse(&input, &parse_config).expect("parse"); |
| 81 | + let output = renderer.render(&doc, &render_config).expect("render"); |
| 82 | + |
| 83 | + // Re-parse the output |
| 84 | + let doc2 = parser.parse(&output, &parse_config).expect("reparse"); |
| 85 | + |
| 86 | + // Should have non-empty blocks |
| 87 | + prop_assert!(doc2.content.len() > 0); |
| 88 | + } |
122 | 89 | } |
123 | 90 |
|
124 | 91 | #[test] |
125 | | -fn prop_render_config_defaults_valid() { |
126 | | - let config = RenderConfig::default(); |
127 | | - prop_assert_eq!(config.line_width, 80); |
128 | | - prop_assert_eq!(config.indent, " "); |
129 | | - prop_assert!(!config.hard_breaks); |
| 92 | +fn test_source_format_all_enumeration() { |
| 93 | + let all = SourceFormat::ALL; |
| 94 | + assert_eq!(all.len(), 7); |
| 95 | + |
| 96 | + let has_plaintext = all.iter().any(|f| matches!(f, SourceFormat::PlainText)); |
| 97 | + let has_markdown = all.iter().any(|f| matches!(f, SourceFormat::Markdown)); |
| 98 | + assert!(has_plaintext && has_markdown); |
130 | 99 | } |
131 | 100 |
|
132 | 101 | #[test] |
133 | | -fn prop_parse_config_options_non_lossy() { |
134 | | - proptest!(|(key in "[a-z]{1,20}", value in "[a-z0-9]{1,20}")| { |
135 | | - let mut config = ParseConfig::default(); |
136 | | - config.format_options.insert(key.clone(), value.clone()); |
| 102 | +fn test_parse_config_defaults_stable() { |
| 103 | + let c1 = ParseConfig::default(); |
| 104 | + let c2 = ParseConfig::default(); |
137 | 105 |
|
138 | | - prop_assert_eq!(config.format_options.get(&key), Some(&value)); |
139 | | - }); |
| 106 | + assert_eq!(c1.preserve_spans, c2.preserve_spans); |
| 107 | + assert_eq!(c1.preserve_raw_source, c2.preserve_raw_source); |
140 | 108 | } |
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