/
rust-mode-tests.el
397 lines (351 loc) · 10.6 KB
/
rust-mode-tests.el
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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
;;; rust-mode-tests.el --- ERT tests for rust-mode.el
(require 'rust-mode)
(require 'ert)
(require 'cl)
(setq rust-test-fill-column 32)
(defun rust-compare-code-after-manip (original point-pos manip-func expected got)
(equal expected got))
(defun rust-test-explain-bad-manip (original point-pos manip-func expected got)
(if (equal expected got)
nil
(list
;; The (goto-char) and (insert) business here is just for
;; convenience--after an error, you can copy-paste that into emacs eval to
;; insert the bare strings into a buffer
"Rust code was manipulated wrong after:"
`(insert ,original)
`(goto-char ,point-pos)
'expected `(insert ,expected)
'got `(insert ,got)
(loop for i from 0 to (max (length original) (length expected))
for oi = (if (< i (length got)) (elt got i))
for ei = (if (< i (length expected)) (elt expected i))
while (equal oi ei)
finally return `(first-difference-at
(goto-char ,(+ 1 i))
expected ,(char-to-string ei)
got ,(char-to-string oi))))))
(put 'rust-compare-code-after-manip 'ert-explainer
'rust-test-explain-bad-manip)
(defun rust-test-manip-code (original point-pos manip-func expected)
(with-temp-buffer
(rust-mode)
(insert original)
(goto-char point-pos)
(funcall manip-func)
(should (rust-compare-code-after-manip
original point-pos manip-func expected (buffer-string)))))
(defun test-fill-paragraph (unfilled expected &optional start-pos end-pos)
"We're going to run through many scenarios here--the point should be able to be anywhere from the start-pos (defaults to 1) through end-pos (defaults to the length of what was passed in) and (fill-paragraph) should return the same result.
Also, the result should be the same regardless of whether the code is at the beginning or end of the file. (If you're not careful, that can make a difference.) So we test each position given above with the passed code at the beginning, the end, neither and both. So we do this a total of (end-pos - start-pos)*4 times. Oy."
(let* ((start-pos (or start-pos 1))
(end-pos (or end-pos (length unfilled)))
(padding "\n \n")
(padding-len (length padding)))
(loop
for pad-at-beginning from 0 to 1
do (loop for pad-at-end from 0 to 1
with padding-beginning = (if (= 0 pad-at-beginning) "" padding)
with padding-end = (if (= 0 pad-at-end) "" padding)
with padding-adjust = (* padding-len pad-at-beginning)
with padding-beginning = (if (= 0 pad-at-beginning) "" padding)
with padding-end = (if (= 0 pad-at-end) "" padding)
;; If we're adding space to the beginning, and our start position
;; is at the very beginning, we want to test within the added space.
;; Otherwise adjust the start and end for the beginning padding.
with start-pos = (if (= 1 start-pos) 1 (+ padding-adjust start-pos))
with end-pos = (+ end-pos padding-adjust)
do (loop for pos from start-pos to end-pos
do (rust-test-manip-code
(concat padding-beginning unfilled padding-end)
pos
(lambda ()
(let ((fill-column rust-test-fill-column))
(fill-paragraph)))
(concat padding-beginning expected padding-end)))))))
(ert-deftest fill-paragraph-top-level-multi-line-style-doc-comment-second-line ()
(test-fill-paragraph
"/**
* This is a very very very very very very very long string
*/"
"/**
* This is a very very very very
* very very very long string
*/"))
(ert-deftest fill-paragraph-top-level-multi-line-style-doc-comment-first-line ()
(test-fill-paragraph
"/** This is a very very very very very very very long string
*/"
"/** This is a very very very
* very very very very long
* string
*/"))
(ert-deftest fill-paragraph-multi-paragraph-multi-line-style-doc-comment ()
(let
((multi-paragraph-unfilled
"/**
* This is the first really really really really really really really long paragraph
*
* This is the second really really really really really really long paragraph
*/"))
(test-fill-paragraph
multi-paragraph-unfilled
"/**
* This is the first really
* really really really really
* really really long paragraph
*
* This is the second really really really really really really long paragraph
*/"
1 89)
(test-fill-paragraph
multi-paragraph-unfilled
"/**
* This is the first really really really really really really really long paragraph
*
* This is the second really
* really really really really
* really long paragraph
*/"
90)))
(ert-deftest fill-paragraph-multi-paragraph-single-line-style-doc-comment ()
(let
((multi-paragraph-unfilled
"/// This is the first really really really really really really really long paragraph
///
/// This is the second really really really really really really long paragraph"))
(test-fill-paragraph
multi-paragraph-unfilled
"/// This is the first really
/// really really really really
/// really really long paragraph
///
/// This is the second really really really really really really long paragraph"
1 86)
(test-fill-paragraph
multi-paragraph-unfilled
"/// This is the first really really really really really really really long paragraph
///
/// This is the second really
/// really really really really
/// really long paragraph"
87)))
(ert-deftest fill-paragraph-multi-paragraph-single-line-style-indented ()
(test-fill-paragraph
" // This is the first really really really really really really really long paragraph
//
// This is the second really really really really really really long paragraph"
" // This is the first really
// really really really
// really really really
// long paragraph
//
// This is the second really really really really really really long paragraph" 1 89))
(ert-deftest fill-paragraph-multi-line-style-inner-doc-comment ()
(test-fill-paragraph
"/*! This is a very very very very very very very long string
*/"
"/*! This is a very very very
* very very very very long
* string
*/"))
(ert-deftest fill-paragraph-single-line-style-inner-doc-comment ()
(test-fill-paragraph
"//! This is a very very very very very very very long string"
"//! This is a very very very
//! very very very very long
//! string"))
(ert-deftest fill-paragraph-prefixless-multi-line-doc-comment ()
(test-fill-paragraph
"/**
This is my summary. Blah blah blah blah blah. Dilly dally dilly dally dilly dally doo.
This is some more text. Fee fie fo fum. Humpty dumpty sat on a wall.
*/"
"/**
This is my summary. Blah blah
blah blah blah. Dilly dally
dilly dally dilly dally doo.
This is some more text. Fee fie fo fum. Humpty dumpty sat on a wall.
*/" 4 90))
(ert-deftest fill-paragraph-with-no-space-after-star-prefix ()
(test-fill-paragraph
"/**
*This is a very very very very very very very long string
*/"
"/**
*This is a very very very very
*very very very long string
*/"))
(defun test-auto-fill (initial position inserted expected)
(rust-test-manip-code
initial
position
(lambda ()
(unwind-protect
(progn
(let ((fill-column rust-test-fill-column))
(auto-fill-mode)
(goto-char position)
(insert inserted)
(syntax-ppss-flush-cache 1)
(funcall auto-fill-function)))
(auto-fill-mode t)))
expected))
(ert-deftest auto-fill-multi-line-doc-comment ()
(test-auto-fill
"/**
*
*/"
8
"This is a very very very very very very very long string"
"/**
* This is a very very very very
* very very very long string
*/"))
(ert-deftest auto-fill-single-line-doc-comment ()
(test-auto-fill
"/// This is the first really
/// really really really really
/// really really long paragraph
///
/// "
103
"This is the second really really really really really really long paragraph"
"/// This is the first really
/// really really really really
/// really really long paragraph
///
/// This is the second really
/// really really really really
/// really long paragraph"
))
(ert-deftest auto-fill-multi-line-prefixless ()
(test-auto-fill
"/*
*/"
4
"This is a very very very very very very very long string"
"/*
This is a very very very very
very very very long string
*/"
))
(defun test-indent (indented)
(let ((deindented (replace-regexp-in-string "^[[:blank:]]*" " " indented)))
(rust-test-manip-code
deindented
1
(lambda () (indent-region 1 (buffer-size)))
indented)))
(ert-deftest indent-struct-fields-aligned ()
(test-indent
"
struct Foo { bar: int,
baz: int }
struct Blah {x:int,
y:int,
z:~str}"))
(ert-deftest indent-doc-comments ()
(test-indent
"
/**
* This is a doc comment
*
*/
/// So is this
fn foo() {
/*!
* this is a nested doc comment
*/
//! And so is this
}"))
(ert-deftest indent-inside-braces ()
(test-indent
"
// struct fields out one level:
struct foo {
a:int,
// comments too
b:char
}
fn bar(x:~int) { // comment here should not affect the next indent
bla();
bla();
}"))
(ert-deftest indent-top-level ()
(test-indent
"
// Everything here is at the top level and should not be indented
#[attrib]
mod foo;
pub static bar = Quux{a: b()}
use foo::bar::baz;
fn foo() { }
"))
(ert-deftest indent-params-no-align ()
(test-indent
"
// Indent out one level because no params appear on the first line
fn xyzzy(
a:int,
b:char) { }
fn abcdef(
a:int,
b:char)
-> char
{ }"))
(ert-deftest indent-params-align ()
(test-indent
"
// Align the second line of params to the first
fn foo(a:int,
b:char) { }
fn bar( a:int,
b:char)
-> int
{ }
fn baz( a:int, // shoudl work with a comment here
b:char)
-> int
{ }
"))
(ert-deftest indent-square-bracket-alignment ()
(test-indent
"
fn args_on_the_next_line( // with a comment
a:int,
b:~str) {
let aaaaaa = [
1,
2,
3];
let bbbbbbb = [1, 2, 3,
4, 5, 6];
let ccc = [ 10, 9, 8,
7, 6, 5];
}
"))
(ert-deftest indent-nested-fns ()
(test-indent
"
fn nexted_fns(a: fn(b:int,
c:char)
-> int,
d: int)
-> uint
{
0
}
"
))
(ert-deftest indent-multi-line-expr ()
(test-indent
"
fn foo()
{
x();
let a =
b();
}
"
))