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99b4f3a2 1/* A self-testing framework, for use by -fself-test.
fbd26352 2 Copyright (C) 2015-2019 Free Software Foundation, Inc.
99b4f3a2 3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
20#ifndef GCC_SELFTEST_H
21#define GCC_SELFTEST_H
22
23/* The selftest code should entirely disappear in a production
24 configuration, hence we guard all of it with #if CHECKING_P. */
25
26#if CHECKING_P
27
28namespace selftest {
29
d0982399 30/* A struct describing the source-location of a selftest, to make it
31 easier to track down failing tests. */
32
33struct location
34{
35 location (const char *file, int line, const char *function)
36 : m_file (file), m_line (line), m_function (function) {}
37
38 const char *m_file;
39 int m_line;
40 const char *m_function;
41};
42
43/* A macro for use in selftests and by the ASSERT_ macros below,
44 constructing a selftest::location for the current source location. */
45
46#define SELFTEST_LOCATION \
47 (::selftest::location (__FILE__, __LINE__, __FUNCTION__))
48
99b4f3a2 49/* The entrypoint for running all tests. */
50
51extern void run_tests ();
52
53/* Record the successful outcome of some aspect of the test. */
54
d0982399 55extern void pass (const location &loc, const char *msg);
99b4f3a2 56
57/* Report the failed outcome of some aspect of the test and abort. */
58
17437807 59extern void fail (const location &loc, const char *msg)
60 ATTRIBUTE_NORETURN;
99b4f3a2 61
69ffa179 62/* As "fail", but using printf-style formatted output. */
63
d0982399 64extern void fail_formatted (const location &loc, const char *fmt, ...)
17437807 65 ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
69ffa179 66
67/* Implementation detail of ASSERT_STREQ. */
68
d0982399 69extern void assert_streq (const location &loc,
1f9995dc 70 const char *desc_val1, const char *desc_val2,
71 const char *val1, const char *val2);
69ffa179 72
c3e800b9 73/* Implementation detail of ASSERT_STR_CONTAINS. */
74
75extern void assert_str_contains (const location &loc,
76 const char *desc_haystack,
77 const char *desc_needle,
78 const char *val_haystack,
79 const char *val_needle);
80
6e8a18d1 81/* Implementation detail of ASSERT_STR_STARTSWITH. */
82
83extern void assert_str_startswith (const location &loc,
84 const char *desc_str,
85 const char *desc_prefix,
86 const char *val_str,
87 const char *val_prefix);
88
89
b99fc6a1 90/* A named temporary file for use in selftests.
91 Usable for writing out files, and as the base class for
92 temp_source_file.
93 The file is unlinked in the destructor. */
9a02e392 94
b99fc6a1 95class named_temp_file
9a02e392 96{
97 public:
b99fc6a1 98 named_temp_file (const char *suffix);
99 ~named_temp_file ();
9a02e392 100 const char *get_filename () const { return m_filename; }
101
102 private:
103 char *m_filename;
104};
105
b99fc6a1 106/* A class for writing out a temporary sourcefile for use in selftests
107 of input handling. */
108
109class temp_source_file : public named_temp_file
110{
111 public:
112 temp_source_file (const location &loc, const char *suffix,
113 const char *content);
114};
115
00f7ba03 116/* RAII-style class for avoiding introducing locale-specific differences
117 in strings containing localized quote marks, by temporarily overriding
118 the "open_quote" and "close_quote" globals to something hardcoded.
119
120 Specifically, the C locale's values are used:
121 - open_quote becomes "`"
122 - close_quote becomes "'"
123 for the lifetime of the object. */
124
125class auto_fix_quotes
126{
127 public:
128 auto_fix_quotes ();
129 ~auto_fix_quotes ();
130
131 private:
132 const char *m_saved_open_quote;
133 const char *m_saved_close_quote;
134};
135
7ec388ed 136/* Various selftests involving location-handling require constructing a
137 line table and one or more line maps within it.
138
139 For maximum test coverage we want to run these tests with a variety
140 of situations:
141 - line_table->default_range_bits: some frontends use a non-zero value
142 and others use zero
143 - the fallback modes within line-map.c: there are various threshold
be1e7283 144 values for location_t beyond line-map.c changes
7ec388ed 145 behavior (disabling of the range-packing optimization, disabling
146 of column-tracking). We can exercise these by starting the line_table
147 at interesting values at or near these thresholds.
148
149 The following struct describes a particular case within our test
150 matrix. */
151
152struct line_table_case;
153
154/* A class for overriding the global "line_table" within a selftest,
155 restoring its value afterwards. At most one instance of this
156 class can exist at once, due to the need to keep the old value
157 of line_table as a GC root. */
158
159class line_table_test
160{
161 public:
162 /* Default constructor. Override "line_table", using sane defaults
163 for the temporary line_table. */
164 line_table_test ();
165
166 /* Constructor. Override "line_table", using the case described by C. */
167 line_table_test (const line_table_case &c);
168
169 /* Destructor. Restore the saved line_table. */
170 ~line_table_test ();
171};
172
173/* Run TESTCASE multiple times, once for each case in our test matrix. */
174
175extern void
176for_each_line_table_case (void (*testcase) (const line_table_case &));
177
76a53b26 178/* Read the contents of PATH into memory, returning a 0-terminated buffer
179 that must be freed by the caller.
180 Fail (and abort) if there are any problems, with LOC as the reported
181 location of the failure. */
182
183extern char *read_file (const location &loc, const char *path);
184
09c2dc4c 185/* A helper function for writing tests that interact with the
186 garbage collector. */
187
188extern void forcibly_ggc_collect ();
189
c081d2fc 190/* Convert a path relative to SRCDIR/gcc/testsuite/selftests
191 to a real path (either absolute, or relative to pwd).
192 The result should be freed by the caller. */
193
194extern char *locate_file (const char *path);
195
196/* The path of SRCDIR/testsuite/selftests. */
197
198extern const char *path_to_selftest_files;
199
d2c67796 200/* selftest::test_runner is an implementation detail of selftest::run_tests,
201 exposed here to allow plugins to run their own suites of tests. */
202
203class test_runner
204{
205 public:
206 test_runner (const char *name);
207 ~test_runner ();
208
209 private:
210 const char *m_name;
211 long m_start_time;
212};
213
99b4f3a2 214/* Declarations for specific families of tests (by source file), in
215 alphabetical order. */
dab0e385 216extern void attribute_c_tests ();
99b4f3a2 217extern void bitmap_c_tests ();
564850b9 218extern void cgraph_c_tests ();
d582d140 219extern void convert_c_tests ();
6628b04d 220extern void diagnostic_c_tests ();
2593ab36 221extern void diagnostic_format_json_cc_tests ();
99b4f3a2 222extern void diagnostic_show_locus_c_tests ();
c309657f 223extern void dumpfile_c_tests ();
fe066ce3 224extern void edit_context_c_tests ();
99b4f3a2 225extern void et_forest_c_tests ();
77ddb3e5 226extern void fibonacci_heap_c_tests ();
773f4004 227extern void fold_const_c_tests ();
99b4f3a2 228extern void function_tests_c_tests ();
f61d7248 229extern void ggc_tests_c_tests ();
773f4004 230extern void gimple_c_tests ();
99b4f3a2 231extern void hash_map_tests_c_tests ();
232extern void hash_set_tests_c_tests ();
233extern void input_c_tests ();
9dcf2a11 234extern void json_cc_tests ();
ed9370cc 235extern void opt_problem_cc_tests ();
9dcf2a11 236extern void optinfo_emit_json_cc_tests ();
773f4004 237extern void predict_c_tests ();
bccee643 238extern void pretty_print_c_tests ();
836c1c68 239extern void read_rtl_function_c_tests ();
99b4f3a2 240extern void rtl_tests_c_tests ();
773f4004 241extern void sbitmap_c_tests ();
363d8665 242extern void selftest_c_tests ();
773f4004 243extern void simplify_rtx_c_tests ();
99b4f3a2 244extern void spellcheck_c_tests ();
819cba30 245extern void spellcheck_tree_c_tests ();
f5b88ba1 246extern void sreal_c_tests ();
3d9a2fb3 247extern void store_merging_c_tests ();
99b4f3a2 248extern void tree_c_tests ();
249extern void tree_cfg_c_tests ();
773f4004 250extern void typed_splay_tree_c_tests ();
b6b04a7b 251extern void unique_ptr_tests_cc_tests ();
99b4f3a2 252extern void vec_c_tests ();
f63c1cff 253extern void vec_perm_indices_c_tests ();
773f4004 254extern void wide_int_cc_tests ();
6e8a18d1 255extern void opt_proposer_c_tests ();
99b4f3a2 256
257extern int num_passes;
258
259} /* end of namespace selftest. */
260
261/* Macros for writing tests. */
262
263/* Evaluate EXPR and coerce to bool, calling
264 ::selftest::pass if it is true,
265 ::selftest::fail if it false. */
266
267#define ASSERT_TRUE(EXPR) \
30678d42 268 ASSERT_TRUE_AT (SELFTEST_LOCATION, (EXPR))
269
270/* Like ASSERT_TRUE, but treat LOC as the effective location of the
271 selftest. */
272
273#define ASSERT_TRUE_AT(LOC, EXPR) \
99b4f3a2 274 SELFTEST_BEGIN_STMT \
d7e88239 275 const char *desc_ = "ASSERT_TRUE (" #EXPR ")"; \
276 bool actual_ = (EXPR); \
277 if (actual_) \
278 ::selftest::pass ((LOC), desc_); \
99b4f3a2 279 else \
d7e88239 280 ::selftest::fail ((LOC), desc_); \
99b4f3a2 281 SELFTEST_END_STMT
282
283/* Evaluate EXPR and coerce to bool, calling
284 ::selftest::pass if it is false,
285 ::selftest::fail if it true. */
286
287#define ASSERT_FALSE(EXPR) \
30678d42 288 ASSERT_FALSE_AT (SELFTEST_LOCATION, (EXPR))
289
290/* Like ASSERT_FALSE, but treat LOC as the effective location of the
291 selftest. */
292
293#define ASSERT_FALSE_AT(LOC, EXPR) \
99b4f3a2 294 SELFTEST_BEGIN_STMT \
d7e88239 295 const char *desc_ = "ASSERT_FALSE (" #EXPR ")"; \
296 bool actual_ = (EXPR); \
297 if (actual_) \
298 ::selftest::fail ((LOC), desc_); \
299 else \
300 ::selftest::pass ((LOC), desc_); \
99b4f3a2 301 SELFTEST_END_STMT
302
1f9995dc 303/* Evaluate VAL1 and VAL2 and compare them with ==, calling
99b4f3a2 304 ::selftest::pass if they are equal,
305 ::selftest::fail if they are non-equal. */
306
1f9995dc 307#define ASSERT_EQ(VAL1, VAL2) \
308 ASSERT_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
b73690a4 309
310/* Like ASSERT_EQ, but treat LOC as the effective location of the
311 selftest. */
312
1f9995dc 313#define ASSERT_EQ_AT(LOC, VAL1, VAL2) \
99b4f3a2 314 SELFTEST_BEGIN_STMT \
1f9995dc 315 const char *desc_ = "ASSERT_EQ (" #VAL1 ", " #VAL2 ")"; \
316 if ((VAL1) == (VAL2)) \
d7e88239 317 ::selftest::pass ((LOC), desc_); \
99b4f3a2 318 else \
d7e88239 319 ::selftest::fail ((LOC), desc_); \
99b4f3a2 320 SELFTEST_END_STMT
321
1f9995dc 322/* Evaluate VAL1 and VAL2 and compare them with known_eq, calling
466432a3 323 ::selftest::pass if they are always equal,
324 ::selftest::fail if they might be non-equal. */
325
1f9995dc 326#define ASSERT_KNOWN_EQ(VAL1, VAL2) \
327 ASSERT_KNOWN_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
466432a3 328
329/* Like ASSERT_KNOWN_EQ, but treat LOC as the effective location of the
330 selftest. */
331
1f9995dc 332#define ASSERT_KNOWN_EQ_AT(LOC, VAL1, VAL2) \
466432a3 333 SELFTEST_BEGIN_STMT \
1f9995dc 334 const char *desc = "ASSERT_KNOWN_EQ (" #VAL1 ", " #VAL2 ")"; \
335 if (known_eq (VAL1, VAL2)) \
466432a3 336 ::selftest::pass ((LOC), desc); \
337 else \
338 ::selftest::fail ((LOC), desc); \
339 SELFTEST_END_STMT
340
1f9995dc 341/* Evaluate VAL1 and VAL2 and compare them with !=, calling
99b4f3a2 342 ::selftest::pass if they are non-equal,
343 ::selftest::fail if they are equal. */
344
1f9995dc 345#define ASSERT_NE(VAL1, VAL2) \
99b4f3a2 346 SELFTEST_BEGIN_STMT \
1f9995dc 347 const char *desc_ = "ASSERT_NE (" #VAL1 ", " #VAL2 ")"; \
348 if ((VAL1) != (VAL2)) \
d7e88239 349 ::selftest::pass (SELFTEST_LOCATION, desc_); \
99b4f3a2 350 else \
d7e88239 351 ::selftest::fail (SELFTEST_LOCATION, desc_); \
99b4f3a2 352 SELFTEST_END_STMT
353
1f9995dc 354/* Evaluate VAL1 and VAL2 and compare them with maybe_ne, calling
466432a3 355 ::selftest::pass if they might be non-equal,
356 ::selftest::fail if they are known to be equal. */
357
1f9995dc 358#define ASSERT_MAYBE_NE(VAL1, VAL2) \
359 ASSERT_MAYBE_NE_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
466432a3 360
361/* Like ASSERT_MAYBE_NE, but treat LOC as the effective location of the
362 selftest. */
363
1f9995dc 364#define ASSERT_MAYBE_NE_AT(LOC, VAL1, VAL2) \
466432a3 365 SELFTEST_BEGIN_STMT \
1f9995dc 366 const char *desc = "ASSERT_MAYBE_NE (" #VAL1 ", " #VAL2 ")"; \
367 if (maybe_ne (VAL1, VAL2)) \
466432a3 368 ::selftest::pass ((LOC), desc); \
369 else \
370 ::selftest::fail ((LOC), desc); \
371 SELFTEST_END_STMT
372
d73881b0 373/* Evaluate LHS and RHS and compare them with >, calling
374 ::selftest::pass if LHS > RHS,
375 ::selftest::fail otherwise. */
376
377#define ASSERT_GT(LHS, RHS) \
378 ASSERT_GT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
379
380/* Like ASSERT_GT, but treat LOC as the effective location of the
381 selftest. */
382
383#define ASSERT_GT_AT(LOC, LHS, RHS) \
384 SELFTEST_BEGIN_STMT \
385 const char *desc_ = "ASSERT_GT (" #LHS ", " #RHS ")"; \
386 if ((LHS) > (RHS)) \
387 ::selftest::pass ((LOC), desc_); \
388 else \
389 ::selftest::fail ((LOC), desc_); \
390 SELFTEST_END_STMT
391
392/* Evaluate LHS and RHS and compare them with <, calling
393 ::selftest::pass if LHS < RHS,
394 ::selftest::fail otherwise. */
395
396#define ASSERT_LT(LHS, RHS) \
397 ASSERT_LT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
398
399/* Like ASSERT_LT, but treat LOC as the effective location of the
400 selftest. */
401
402#define ASSERT_LT_AT(LOC, LHS, RHS) \
403 SELFTEST_BEGIN_STMT \
404 const char *desc_ = "ASSERT_LT (" #LHS ", " #RHS ")"; \
405 if ((LHS) < (RHS)) \
406 ::selftest::pass ((LOC), desc_); \
407 else \
408 ::selftest::fail ((LOC), desc_); \
409 SELFTEST_END_STMT
410
1f9995dc 411/* Evaluate VAL1 and VAL2 and compare them with strcmp, calling
412 ::selftest::pass if they are equal (and both are non-NULL),
413 ::selftest::fail if they are non-equal, or are both NULL. */
99b4f3a2 414
1f9995dc 415#define ASSERT_STREQ(VAL1, VAL2) \
69ffa179 416 SELFTEST_BEGIN_STMT \
1f9995dc 417 ::selftest::assert_streq (SELFTEST_LOCATION, #VAL1, #VAL2, \
418 (VAL1), (VAL2)); \
d0982399 419 SELFTEST_END_STMT
420
30678d42 421/* Like ASSERT_STREQ, but treat LOC as the effective location of the
d0982399 422 selftest. */
423
1f9995dc 424#define ASSERT_STREQ_AT(LOC, VAL1, VAL2) \
d0982399 425 SELFTEST_BEGIN_STMT \
1f9995dc 426 ::selftest::assert_streq ((LOC), #VAL1, #VAL2, \
427 (VAL1), (VAL2)); \
99b4f3a2 428 SELFTEST_END_STMT
429
c3e800b9 430/* Evaluate HAYSTACK and NEEDLE and use strstr to determine if NEEDLE
431 is within HAYSTACK.
432 ::selftest::pass if NEEDLE is found.
433 ::selftest::fail if it is not found. */
434
435#define ASSERT_STR_CONTAINS(HAYSTACK, NEEDLE) \
436 SELFTEST_BEGIN_STMT \
437 ::selftest::assert_str_contains (SELFTEST_LOCATION, #HAYSTACK, #NEEDLE, \
438 (HAYSTACK), (NEEDLE)); \
e43345c1 439 SELFTEST_END_STMT
440
441/* Like ASSERT_STR_CONTAINS, but treat LOC as the effective location of the
442 selftest. */
443
444#define ASSERT_STR_CONTAINS_AT(LOC, HAYSTACK, NEEDLE) \
445 SELFTEST_BEGIN_STMT \
446 ::selftest::assert_str_contains (LOC, #HAYSTACK, #NEEDLE, \
447 (HAYSTACK), (NEEDLE)); \
c3e800b9 448 SELFTEST_END_STMT
449
6e8a18d1 450/* Evaluate STR and PREFIX and determine if STR starts with PREFIX.
451 ::selftest::pass if STR does start with PREFIX.
452 ::selftest::fail if does not, or either is NULL. */
453
454#define ASSERT_STR_STARTSWITH(STR, PREFIX) \
455 SELFTEST_BEGIN_STMT \
456 ::selftest::assert_str_startswith (SELFTEST_LOCATION, #STR, #PREFIX, \
457 (STR), (PREFIX)); \
458 SELFTEST_END_STMT
459
99b4f3a2 460/* Evaluate PRED1 (VAL1), calling ::selftest::pass if it is true,
461 ::selftest::fail if it is false. */
462
d7e88239 463#define ASSERT_PRED1(PRED1, VAL1) \
464 SELFTEST_BEGIN_STMT \
465 const char *desc_ = "ASSERT_PRED1 (" #PRED1 ", " #VAL1 ")"; \
466 bool actual_ = (PRED1) (VAL1); \
467 if (actual_) \
468 ::selftest::pass (SELFTEST_LOCATION, desc_); \
469 else \
470 ::selftest::fail (SELFTEST_LOCATION, desc_); \
99b4f3a2 471 SELFTEST_END_STMT
472
473#define SELFTEST_BEGIN_STMT do {
474#define SELFTEST_END_STMT } while (0)
475
476#endif /* #if CHECKING_P */
477
478#endif /* GCC_SELFTEST_H */