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coverage.txt (6405B)
1
2 # Coverage
3
4 This file is just a collection of unit tests not covered elsewhere.
5
6 Most notably regression tests, tests improving code coverage and other useful
7 things may drop here.
8
9 (However any tests requiring any additional command line option, like enabling
10 an extension, must be included in their respective files.)
11
12
13 ## GitHub Issues
14
15 ### [Issue 2](https://github.com/mity/md4c/issues/2)
16
17 Raw HTML block:
18
19 ```````````````````````````````` example
20 <gi att1=tok1 att2=tok2>
21 .
22 <gi att1=tok1 att2=tok2>
23 ````````````````````````````````
24
25 Inline:
26
27 ```````````````````````````````` example
28 foo <gi att1=tok1 att2=tok2> bar
29 .
30 <p>foo <gi att1=tok1 att2=tok2> bar</p>
31 ````````````````````````````````
32
33 Inline with a line break:
34
35 ```````````````````````````````` example
36 foo <gi att1=tok1
37 att2=tok2> bar
38 .
39 <p>foo <gi att1=tok1
40 att2=tok2> bar</p>
41 ````````````````````````````````
42
43
44 ### [Issue 4](https://github.com/mity/md4c/issues/4)
45
46 ```````````````````````````````` example
47 
48 .
49 <p><img src="img.png" alt="alt text with entity ©" title="title"></p>
50 ````````````````````````````````
51
52
53 ### [Issue 9](https://github.com/mity/md4c/issues/9)
54
55 ```````````````````````````````` example
56 > [foo
57 > bar]: /url
58 >
59 > [foo bar]
60 .
61 <blockquote>
62 <p><a href="/url">foo
63 bar</a></p>
64 </blockquote>
65 ````````````````````````````````
66
67 ### [Issue 10](https://github.com/mity/md4c/issues/10)
68 ```````````````````````````````` example
69 [x]:
70 x
71 - <?
72
73 x
74 .
75 <ul>
76 <li><?
77 <p>x</p>
78 </li>
79 </ul>
80 ````````````````````````````````
81
82 ### [Issue 11](https://github.com/mity/md4c/issues/11)
83 ```````````````````````````````` example
84 x [link](/url "foo – bar") x
85 .
86 <p>x <a href="/url" title="foo – bar">link</a> x</p>
87 ````````````````````````````````
88
89 ### [Issue 15](https://github.com/mity/md4c/issues/15)
90 ```````````````````````````````` example
91 ***b* c*
92 .
93 <p>*<em><em>b</em> c</em></p>
94 ````````````````````````````````
95
96
97 ### [Issue 14](https://github.com/mity/md4c/issues/14)
98 ```````````````````````````````` example
99 a***b* c*
100 .
101 <p>a*<em><em>b</em> c</em></p>
102 ````````````````````````````````
103
104
105 ### [Issue 21](https://github.com/mity/md4c/issues/21)
106 ```````````````````````````````` example
107 a*b**c*
108 .
109 <p>a<em>b**c</em></p>
110 ````````````````````````````````
111
112
113 ### [Issue 24](https://github.com/mity/md4c/issues/24)
114 ```````````````````````````````` example
115 [a](<b>c)
116 .
117 <p><a href="%3Cb%3Ec">a</a></p>
118 ````````````````````````````````
119
120
121 ## Code coverage
122
123 ### `md_is_unicode_whitespace__()`
124
125 Unicode whitespace (here U+2000) forms a word boundary so these cannot be
126 resolved as emphasis span because there is no closer mark.
127
128 ```````````````````````````````` example
129 *foo *bar
130 .
131 <p>*foo *bar</p>
132 ````````````````````````````````
133
134
135 ### `md_is_unicode_punct__()`
136
137 Ditto for Unicode punctuation (here U+00A1).
138
139 ```````````````````````````````` example
140 *foo¡*bar
141 .
142 <p>*foo¡*bar</p>
143 ````````````````````````````````
144
145
146 ### `md_get_unicode_fold_info()`
147
148 ```````````````````````````````` example
149 [Příliš žluťoučký kůň úpěl ďábelské ódy.]
150
151 [PŘÍLIŠ ŽLUŤOUČKÝ KŮŇ ÚPĚL ĎÁBELSKÉ ÓDY.]: /url
152 .
153 <p><a href="/url">Příliš žluťoučký kůň úpěl ďábelské ódy.</a></p>
154 ````````````````````````````````
155
156
157 ### `md_decode_utf8__()` and `md_decode_utf8_before__()`
158
159 ```````````````````````````````` example
160 á*Á (U+00E1, i.e. two byte UTF-8 sequence)
161 * (U+2000, i.e. three byte UTF-8 sequence)
162 .
163 <p>á*Á (U+00E1, i.e. two byte UTF-8 sequence)
164 * (U+2000, i.e. three byte UTF-8 sequence)</p>
165 ````````````````````````````````
166
167
168 ### `md_is_link_destination_A()`
169
170
171 ```````````````````````````````` example
172 [link](</url\.with\.escape>)
173 .
174 <p><a href="/url.with.escape">link</a></p>
175 ````````````````````````````````
176
177
178 ### `md_link_label_eq()`
179
180
181 ```````````````````````````````` example
182 [foo bar]
183
184 [foo bar]: /url
185 .
186 <p><a href="/url">foo bar</a></p>
187 ````````````````````````````````
188
189
190 ### `md_is_inline_link_spec()`
191
192 ```````````````````````````````` example
193 > [link](/url 'foo
194 > bar')
195 .
196 <blockquote>
197 <p><a href="/url" title="foo
198 bar">link</a></p>
199 </blockquote>
200 ````````````````````````````````
201
202
203 ### `md_build_ref_def_hashtable()`
204
205 All link labels in the following example all have the same FNV1a hash (after
206 normalization of the label, which means after converting to a vector of Unicode
207 codepoints and lowercase folding).
208
209 So the example triggers quite complex code paths which are not otherwise easily
210 tested.
211
212 ```````````````````````````````` example
213 [foo]: /foo
214 [qnptgbh]: /qnptgbh
215 [abgbrwcv]: /abgbrwcv
216 [abgbrwcv]: /abgbrwcv2
217 [abgbrwcv]: /abgbrwcv3
218 [abgbrwcv]: /abgbrwcv4
219 [alqadfgn]: /alqadfgn
220
221 [foo]
222 [qnptgbh]
223 [abgbrwcv]
224 [alqadfgn]
225 [axgydtdu]
226 .
227 <p><a href="/foo">foo</a>
228 <a href="/qnptgbh">qnptgbh</a>
229 <a href="/abgbrwcv">abgbrwcv</a>
230 <a href="/alqadfgn">alqadfgn</a>
231 [axgydtdu]</p>
232 ````````````````````````````````
233
234 For the sake of completeness, the following C program was used to find the hash
235 collisions by brute force:
236
237 ~~~
238
239 #include <stdio.h>
240 #include <string.h>
241
242
243 static unsigned etalon;
244
245
246
247 #define MD_FNV1A_BASE 2166136261
248 #define MD_FNV1A_PRIME 16777619
249
250 static inline unsigned
251 fnv1a(unsigned base, const void* data, size_t n)
252 {
253 const unsigned char* buf = (const unsigned char*) data;
254 unsigned hash = base;
255 size_t i;
256
257 for(i = 0; i < n; i++) {
258 hash ^= buf[i];
259 hash *= MD_FNV1A_PRIME;
260 }
261
262 return hash;
263 }
264
265
266 static unsigned
267 unicode_hash(const char* data, size_t n)
268 {
269 unsigned value;
270 unsigned hash = MD_FNV1A_BASE;
271 int i;
272
273 for(i = 0; i < n; i++) {
274 value = data[i];
275 hash = fnv1a(hash, &value, sizeof(unsigned));
276 }
277
278 return hash;
279 }
280
281
282 static void
283 recurse(char* buffer, size_t off, size_t len)
284 {
285 int ch;
286
287 if(off < len - 1) {
288 for(ch = 'a'; ch <= 'z'; ch++) {
289 buffer[off] = ch;
290 recurse(buffer, off+1, len);
291 }
292 } else {
293 for(ch = 'a'; ch <= 'z'; ch++) {
294 buffer[off] = ch;
295 if(unicode_hash(buffer, len) == etalon) {
296 printf("Dup: %.*s\n", (int)len, buffer);
297 }
298 }
299 }
300 }
301
302 int
303 main(int argc, char** argv)
304 {
305 char buffer[32];
306 int len;
307
308 if(argc < 2)
309 etalon = unicode_hash("foo", 3);
310 else
311 etalon = unicode_hash(argv[1], strlen(argv[1]));
312
313 for(len = 1; len <= sizeof(buffer); len++)
314 recurse(buffer, 0, len);
315
316 return 0;
317 }
318 ~~~