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99b4f3a2 1/* A self-testing framework, for use by -fself-test.
8e8f6434 2 Copyright (C) 2015-2018 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 ();
99b4f3a2 221extern void diagnostic_show_locus_c_tests ();
c309657f 222extern void dumpfile_c_tests ();
fe066ce3 223extern void edit_context_c_tests ();
99b4f3a2 224extern void et_forest_c_tests ();
77ddb3e5 225extern void fibonacci_heap_c_tests ();
773f4004 226extern void fold_const_c_tests ();
99b4f3a2 227extern void function_tests_c_tests ();
f61d7248 228extern void ggc_tests_c_tests ();
773f4004 229extern void gimple_c_tests ();
99b4f3a2 230extern void hash_map_tests_c_tests ();
231extern void hash_set_tests_c_tests ();
232extern void input_c_tests ();
9dcf2a11 233extern void json_cc_tests ();
ed9370cc 234extern void opt_problem_cc_tests ();
9dcf2a11 235extern void optinfo_emit_json_cc_tests ();
773f4004 236extern void predict_c_tests ();
bccee643 237extern void pretty_print_c_tests ();
836c1c68 238extern void read_rtl_function_c_tests ();
99b4f3a2 239extern void rtl_tests_c_tests ();
773f4004 240extern void sbitmap_c_tests ();
363d8665 241extern void selftest_c_tests ();
773f4004 242extern void simplify_rtx_c_tests ();
99b4f3a2 243extern void spellcheck_c_tests ();
819cba30 244extern void spellcheck_tree_c_tests ();
f5b88ba1 245extern void sreal_c_tests ();
3d9a2fb3 246extern void store_merging_c_tests ();
99b4f3a2 247extern void tree_c_tests ();
248extern void tree_cfg_c_tests ();
773f4004 249extern void typed_splay_tree_c_tests ();
b6b04a7b 250extern void unique_ptr_tests_cc_tests ();
99b4f3a2 251extern void vec_c_tests ();
f63c1cff 252extern void vec_perm_indices_c_tests ();
773f4004 253extern void wide_int_cc_tests ();
6e8a18d1 254extern void opt_proposer_c_tests ();
99b4f3a2 255
256extern int num_passes;
257
258} /* end of namespace selftest. */
259
260/* Macros for writing tests. */
261
262/* Evaluate EXPR and coerce to bool, calling
263 ::selftest::pass if it is true,
264 ::selftest::fail if it false. */
265
266#define ASSERT_TRUE(EXPR) \
30678d42 267 ASSERT_TRUE_AT (SELFTEST_LOCATION, (EXPR))
268
269/* Like ASSERT_TRUE, but treat LOC as the effective location of the
270 selftest. */
271
272#define ASSERT_TRUE_AT(LOC, EXPR) \
99b4f3a2 273 SELFTEST_BEGIN_STMT \
d7e88239 274 const char *desc_ = "ASSERT_TRUE (" #EXPR ")"; \
275 bool actual_ = (EXPR); \
276 if (actual_) \
277 ::selftest::pass ((LOC), desc_); \
99b4f3a2 278 else \
d7e88239 279 ::selftest::fail ((LOC), desc_); \
99b4f3a2 280 SELFTEST_END_STMT
281
282/* Evaluate EXPR and coerce to bool, calling
283 ::selftest::pass if it is false,
284 ::selftest::fail if it true. */
285
286#define ASSERT_FALSE(EXPR) \
30678d42 287 ASSERT_FALSE_AT (SELFTEST_LOCATION, (EXPR))
288
289/* Like ASSERT_FALSE, but treat LOC as the effective location of the
290 selftest. */
291
292#define ASSERT_FALSE_AT(LOC, EXPR) \
99b4f3a2 293 SELFTEST_BEGIN_STMT \
d7e88239 294 const char *desc_ = "ASSERT_FALSE (" #EXPR ")"; \
295 bool actual_ = (EXPR); \
296 if (actual_) \
297 ::selftest::fail ((LOC), desc_); \
298 else \
299 ::selftest::pass ((LOC), desc_); \
99b4f3a2 300 SELFTEST_END_STMT
301
1f9995dc 302/* Evaluate VAL1 and VAL2 and compare them with ==, calling
99b4f3a2 303 ::selftest::pass if they are equal,
304 ::selftest::fail if they are non-equal. */
305
1f9995dc 306#define ASSERT_EQ(VAL1, VAL2) \
307 ASSERT_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
b73690a4 308
309/* Like ASSERT_EQ, but treat LOC as the effective location of the
310 selftest. */
311
1f9995dc 312#define ASSERT_EQ_AT(LOC, VAL1, VAL2) \
99b4f3a2 313 SELFTEST_BEGIN_STMT \
1f9995dc 314 const char *desc_ = "ASSERT_EQ (" #VAL1 ", " #VAL2 ")"; \
315 if ((VAL1) == (VAL2)) \
d7e88239 316 ::selftest::pass ((LOC), desc_); \
99b4f3a2 317 else \
d7e88239 318 ::selftest::fail ((LOC), desc_); \
99b4f3a2 319 SELFTEST_END_STMT
320
1f9995dc 321/* Evaluate VAL1 and VAL2 and compare them with known_eq, calling
466432a3 322 ::selftest::pass if they are always equal,
323 ::selftest::fail if they might be non-equal. */
324
1f9995dc 325#define ASSERT_KNOWN_EQ(VAL1, VAL2) \
326 ASSERT_KNOWN_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
466432a3 327
328/* Like ASSERT_KNOWN_EQ, but treat LOC as the effective location of the
329 selftest. */
330
1f9995dc 331#define ASSERT_KNOWN_EQ_AT(LOC, VAL1, VAL2) \
466432a3 332 SELFTEST_BEGIN_STMT \
1f9995dc 333 const char *desc = "ASSERT_KNOWN_EQ (" #VAL1 ", " #VAL2 ")"; \
334 if (known_eq (VAL1, VAL2)) \
466432a3 335 ::selftest::pass ((LOC), desc); \
336 else \
337 ::selftest::fail ((LOC), desc); \
338 SELFTEST_END_STMT
339
1f9995dc 340/* Evaluate VAL1 and VAL2 and compare them with !=, calling
99b4f3a2 341 ::selftest::pass if they are non-equal,
342 ::selftest::fail if they are equal. */
343
1f9995dc 344#define ASSERT_NE(VAL1, VAL2) \
99b4f3a2 345 SELFTEST_BEGIN_STMT \
1f9995dc 346 const char *desc_ = "ASSERT_NE (" #VAL1 ", " #VAL2 ")"; \
347 if ((VAL1) != (VAL2)) \
d7e88239 348 ::selftest::pass (SELFTEST_LOCATION, desc_); \
99b4f3a2 349 else \
d7e88239 350 ::selftest::fail (SELFTEST_LOCATION, desc_); \
99b4f3a2 351 SELFTEST_END_STMT
352
1f9995dc 353/* Evaluate VAL1 and VAL2 and compare them with maybe_ne, calling
466432a3 354 ::selftest::pass if they might be non-equal,
355 ::selftest::fail if they are known to be equal. */
356
1f9995dc 357#define ASSERT_MAYBE_NE(VAL1, VAL2) \
358 ASSERT_MAYBE_NE_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
466432a3 359
360/* Like ASSERT_MAYBE_NE, but treat LOC as the effective location of the
361 selftest. */
362
1f9995dc 363#define ASSERT_MAYBE_NE_AT(LOC, VAL1, VAL2) \
466432a3 364 SELFTEST_BEGIN_STMT \
1f9995dc 365 const char *desc = "ASSERT_MAYBE_NE (" #VAL1 ", " #VAL2 ")"; \
366 if (maybe_ne (VAL1, VAL2)) \
466432a3 367 ::selftest::pass ((LOC), desc); \
368 else \
369 ::selftest::fail ((LOC), desc); \
370 SELFTEST_END_STMT
371
d73881b0 372/* Evaluate LHS and RHS and compare them with >, calling
373 ::selftest::pass if LHS > RHS,
374 ::selftest::fail otherwise. */
375
376#define ASSERT_GT(LHS, RHS) \
377 ASSERT_GT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
378
379/* Like ASSERT_GT, but treat LOC as the effective location of the
380 selftest. */
381
382#define ASSERT_GT_AT(LOC, LHS, RHS) \
383 SELFTEST_BEGIN_STMT \
384 const char *desc_ = "ASSERT_GT (" #LHS ", " #RHS ")"; \
385 if ((LHS) > (RHS)) \
386 ::selftest::pass ((LOC), desc_); \
387 else \
388 ::selftest::fail ((LOC), desc_); \
389 SELFTEST_END_STMT
390
391/* Evaluate LHS and RHS and compare them with <, calling
392 ::selftest::pass if LHS < RHS,
393 ::selftest::fail otherwise. */
394
395#define ASSERT_LT(LHS, RHS) \
396 ASSERT_LT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
397
398/* Like ASSERT_LT, but treat LOC as the effective location of the
399 selftest. */
400
401#define ASSERT_LT_AT(LOC, LHS, RHS) \
402 SELFTEST_BEGIN_STMT \
403 const char *desc_ = "ASSERT_LT (" #LHS ", " #RHS ")"; \
404 if ((LHS) < (RHS)) \
405 ::selftest::pass ((LOC), desc_); \
406 else \
407 ::selftest::fail ((LOC), desc_); \
408 SELFTEST_END_STMT
409
1f9995dc 410/* Evaluate VAL1 and VAL2 and compare them with strcmp, calling
411 ::selftest::pass if they are equal (and both are non-NULL),
412 ::selftest::fail if they are non-equal, or are both NULL. */
99b4f3a2 413
1f9995dc 414#define ASSERT_STREQ(VAL1, VAL2) \
69ffa179 415 SELFTEST_BEGIN_STMT \
1f9995dc 416 ::selftest::assert_streq (SELFTEST_LOCATION, #VAL1, #VAL2, \
417 (VAL1), (VAL2)); \
d0982399 418 SELFTEST_END_STMT
419
30678d42 420/* Like ASSERT_STREQ, but treat LOC as the effective location of the
d0982399 421 selftest. */
422
1f9995dc 423#define ASSERT_STREQ_AT(LOC, VAL1, VAL2) \
d0982399 424 SELFTEST_BEGIN_STMT \
1f9995dc 425 ::selftest::assert_streq ((LOC), #VAL1, #VAL2, \
426 (VAL1), (VAL2)); \
99b4f3a2 427 SELFTEST_END_STMT
428
c3e800b9 429/* Evaluate HAYSTACK and NEEDLE and use strstr to determine if NEEDLE
430 is within HAYSTACK.
431 ::selftest::pass if NEEDLE is found.
432 ::selftest::fail if it is not found. */
433
434#define ASSERT_STR_CONTAINS(HAYSTACK, NEEDLE) \
435 SELFTEST_BEGIN_STMT \
436 ::selftest::assert_str_contains (SELFTEST_LOCATION, #HAYSTACK, #NEEDLE, \
437 (HAYSTACK), (NEEDLE)); \
e43345c1 438 SELFTEST_END_STMT
439
440/* Like ASSERT_STR_CONTAINS, but treat LOC as the effective location of the
441 selftest. */
442
443#define ASSERT_STR_CONTAINS_AT(LOC, HAYSTACK, NEEDLE) \
444 SELFTEST_BEGIN_STMT \
445 ::selftest::assert_str_contains (LOC, #HAYSTACK, #NEEDLE, \
446 (HAYSTACK), (NEEDLE)); \
c3e800b9 447 SELFTEST_END_STMT
448
6e8a18d1 449/* Evaluate STR and PREFIX and determine if STR starts with PREFIX.
450 ::selftest::pass if STR does start with PREFIX.
451 ::selftest::fail if does not, or either is NULL. */
452
453#define ASSERT_STR_STARTSWITH(STR, PREFIX) \
454 SELFTEST_BEGIN_STMT \
455 ::selftest::assert_str_startswith (SELFTEST_LOCATION, #STR, #PREFIX, \
456 (STR), (PREFIX)); \
457 SELFTEST_END_STMT
458
99b4f3a2 459/* Evaluate PRED1 (VAL1), calling ::selftest::pass if it is true,
460 ::selftest::fail if it is false. */
461
d7e88239 462#define ASSERT_PRED1(PRED1, VAL1) \
463 SELFTEST_BEGIN_STMT \
464 const char *desc_ = "ASSERT_PRED1 (" #PRED1 ", " #VAL1 ")"; \
465 bool actual_ = (PRED1) (VAL1); \
466 if (actual_) \
467 ::selftest::pass (SELFTEST_LOCATION, desc_); \
468 else \
469 ::selftest::fail (SELFTEST_LOCATION, desc_); \
99b4f3a2 470 SELFTEST_END_STMT
471
472#define SELFTEST_BEGIN_STMT do {
473#define SELFTEST_END_STMT } while (0)
474
475#endif /* #if CHECKING_P */
476
477#endif /* GCC_SELFTEST_H */