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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
251317e4 33class location
d0982399 34{
251317e4 35public:
d0982399 36 location (const char *file, int line, const char *function)
37 : m_file (file), m_line (line), m_function (function) {}
38
39 const char *m_file;
40 int m_line;
41 const char *m_function;
42};
43
44/* A macro for use in selftests and by the ASSERT_ macros below,
45 constructing a selftest::location for the current source location. */
46
47#define SELFTEST_LOCATION \
48 (::selftest::location (__FILE__, __LINE__, __FUNCTION__))
49
99b4f3a2 50/* The entrypoint for running all tests. */
51
52extern void run_tests ();
53
54/* Record the successful outcome of some aspect of the test. */
55
d0982399 56extern void pass (const location &loc, const char *msg);
99b4f3a2 57
58/* Report the failed outcome of some aspect of the test and abort. */
59
17437807 60extern void fail (const location &loc, const char *msg)
61 ATTRIBUTE_NORETURN;
99b4f3a2 62
69ffa179 63/* As "fail", but using printf-style formatted output. */
64
d0982399 65extern void fail_formatted (const location &loc, const char *fmt, ...)
17437807 66 ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
69ffa179 67
68/* Implementation detail of ASSERT_STREQ. */
69
d0982399 70extern void assert_streq (const location &loc,
1f9995dc 71 const char *desc_val1, const char *desc_val2,
72 const char *val1, const char *val2);
69ffa179 73
c3e800b9 74/* Implementation detail of ASSERT_STR_CONTAINS. */
75
76extern void assert_str_contains (const location &loc,
77 const char *desc_haystack,
78 const char *desc_needle,
79 const char *val_haystack,
80 const char *val_needle);
81
6e8a18d1 82/* Implementation detail of ASSERT_STR_STARTSWITH. */
83
84extern void assert_str_startswith (const location &loc,
85 const char *desc_str,
86 const char *desc_prefix,
87 const char *val_str,
88 const char *val_prefix);
89
90
b99fc6a1 91/* A named temporary file for use in selftests.
92 Usable for writing out files, and as the base class for
93 temp_source_file.
94 The file is unlinked in the destructor. */
9a02e392 95
b99fc6a1 96class named_temp_file
9a02e392 97{
98 public:
b99fc6a1 99 named_temp_file (const char *suffix);
100 ~named_temp_file ();
9a02e392 101 const char *get_filename () const { return m_filename; }
102
103 private:
104 char *m_filename;
105};
106
b99fc6a1 107/* A class for writing out a temporary sourcefile for use in selftests
108 of input handling. */
109
110class temp_source_file : public named_temp_file
111{
112 public:
113 temp_source_file (const location &loc, const char *suffix,
114 const char *content);
115};
116
00f7ba03 117/* RAII-style class for avoiding introducing locale-specific differences
118 in strings containing localized quote marks, by temporarily overriding
119 the "open_quote" and "close_quote" globals to something hardcoded.
120
121 Specifically, the C locale's values are used:
122 - open_quote becomes "`"
123 - close_quote becomes "'"
124 for the lifetime of the object. */
125
126class auto_fix_quotes
127{
128 public:
129 auto_fix_quotes ();
130 ~auto_fix_quotes ();
131
132 private:
133 const char *m_saved_open_quote;
134 const char *m_saved_close_quote;
135};
136
7ec388ed 137/* Various selftests involving location-handling require constructing a
138 line table and one or more line maps within it.
139
140 For maximum test coverage we want to run these tests with a variety
141 of situations:
142 - line_table->default_range_bits: some frontends use a non-zero value
143 and others use zero
144 - the fallback modes within line-map.c: there are various threshold
be1e7283 145 values for location_t beyond line-map.c changes
7ec388ed 146 behavior (disabling of the range-packing optimization, disabling
147 of column-tracking). We can exercise these by starting the line_table
148 at interesting values at or near these thresholds.
149
150 The following struct describes a particular case within our test
151 matrix. */
152
2e966e2a 153class line_table_case;
7ec388ed 154
155/* A class for overriding the global "line_table" within a selftest,
156 restoring its value afterwards. At most one instance of this
157 class can exist at once, due to the need to keep the old value
158 of line_table as a GC root. */
159
160class line_table_test
161{
162 public:
163 /* Default constructor. Override "line_table", using sane defaults
164 for the temporary line_table. */
165 line_table_test ();
166
167 /* Constructor. Override "line_table", using the case described by C. */
168 line_table_test (const line_table_case &c);
169
170 /* Destructor. Restore the saved line_table. */
171 ~line_table_test ();
172};
173
174/* Run TESTCASE multiple times, once for each case in our test matrix. */
175
176extern void
177for_each_line_table_case (void (*testcase) (const line_table_case &));
178
76a53b26 179/* Read the contents of PATH into memory, returning a 0-terminated buffer
180 that must be freed by the caller.
181 Fail (and abort) if there are any problems, with LOC as the reported
182 location of the failure. */
183
184extern char *read_file (const location &loc, const char *path);
185
09c2dc4c 186/* A helper function for writing tests that interact with the
187 garbage collector. */
188
189extern void forcibly_ggc_collect ();
190
c081d2fc 191/* Convert a path relative to SRCDIR/gcc/testsuite/selftests
192 to a real path (either absolute, or relative to pwd).
193 The result should be freed by the caller. */
194
195extern char *locate_file (const char *path);
196
197/* The path of SRCDIR/testsuite/selftests. */
198
199extern const char *path_to_selftest_files;
200
d2c67796 201/* selftest::test_runner is an implementation detail of selftest::run_tests,
202 exposed here to allow plugins to run their own suites of tests. */
203
204class test_runner
205{
206 public:
207 test_runner (const char *name);
208 ~test_runner ();
209
210 private:
211 const char *m_name;
212 long m_start_time;
213};
214
99b4f3a2 215/* Declarations for specific families of tests (by source file), in
216 alphabetical order. */
dab0e385 217extern void attribute_c_tests ();
99b4f3a2 218extern void bitmap_c_tests ();
564850b9 219extern void cgraph_c_tests ();
d582d140 220extern void convert_c_tests ();
6628b04d 221extern void diagnostic_c_tests ();
2593ab36 222extern void diagnostic_format_json_cc_tests ();
99b4f3a2 223extern void diagnostic_show_locus_c_tests ();
c309657f 224extern void dumpfile_c_tests ();
fe066ce3 225extern void edit_context_c_tests ();
99b4f3a2 226extern void et_forest_c_tests ();
77ddb3e5 227extern void fibonacci_heap_c_tests ();
773f4004 228extern void fold_const_c_tests ();
99b4f3a2 229extern void function_tests_c_tests ();
f61d7248 230extern void ggc_tests_c_tests ();
773f4004 231extern void gimple_c_tests ();
99b4f3a2 232extern void hash_map_tests_c_tests ();
233extern void hash_set_tests_c_tests ();
234extern void input_c_tests ();
9dcf2a11 235extern void json_cc_tests ();
ed9370cc 236extern void opt_problem_cc_tests ();
9dcf2a11 237extern void optinfo_emit_json_cc_tests ();
773f4004 238extern void predict_c_tests ();
bccee643 239extern void pretty_print_c_tests ();
836c1c68 240extern void read_rtl_function_c_tests ();
99b4f3a2 241extern void rtl_tests_c_tests ();
773f4004 242extern void sbitmap_c_tests ();
363d8665 243extern void selftest_c_tests ();
773f4004 244extern void simplify_rtx_c_tests ();
99b4f3a2 245extern void spellcheck_c_tests ();
819cba30 246extern void spellcheck_tree_c_tests ();
f5b88ba1 247extern void sreal_c_tests ();
3d9a2fb3 248extern void store_merging_c_tests ();
99b4f3a2 249extern void tree_c_tests ();
250extern void tree_cfg_c_tests ();
773f4004 251extern void typed_splay_tree_c_tests ();
b6b04a7b 252extern void unique_ptr_tests_cc_tests ();
99b4f3a2 253extern void vec_c_tests ();
f63c1cff 254extern void vec_perm_indices_c_tests ();
773f4004 255extern void wide_int_cc_tests ();
6e8a18d1 256extern void opt_proposer_c_tests ();
99b4f3a2 257
258extern int num_passes;
259
260} /* end of namespace selftest. */
261
262/* Macros for writing tests. */
263
264/* Evaluate EXPR and coerce to bool, calling
265 ::selftest::pass if it is true,
266 ::selftest::fail if it false. */
267
268#define ASSERT_TRUE(EXPR) \
30678d42 269 ASSERT_TRUE_AT (SELFTEST_LOCATION, (EXPR))
270
271/* Like ASSERT_TRUE, but treat LOC as the effective location of the
272 selftest. */
273
274#define ASSERT_TRUE_AT(LOC, EXPR) \
99b4f3a2 275 SELFTEST_BEGIN_STMT \
d7e88239 276 const char *desc_ = "ASSERT_TRUE (" #EXPR ")"; \
277 bool actual_ = (EXPR); \
278 if (actual_) \
279 ::selftest::pass ((LOC), desc_); \
99b4f3a2 280 else \
d7e88239 281 ::selftest::fail ((LOC), desc_); \
99b4f3a2 282 SELFTEST_END_STMT
283
284/* Evaluate EXPR and coerce to bool, calling
285 ::selftest::pass if it is false,
286 ::selftest::fail if it true. */
287
288#define ASSERT_FALSE(EXPR) \
30678d42 289 ASSERT_FALSE_AT (SELFTEST_LOCATION, (EXPR))
290
291/* Like ASSERT_FALSE, but treat LOC as the effective location of the
292 selftest. */
293
294#define ASSERT_FALSE_AT(LOC, EXPR) \
99b4f3a2 295 SELFTEST_BEGIN_STMT \
d7e88239 296 const char *desc_ = "ASSERT_FALSE (" #EXPR ")"; \
297 bool actual_ = (EXPR); \
298 if (actual_) \
299 ::selftest::fail ((LOC), desc_); \
300 else \
301 ::selftest::pass ((LOC), desc_); \
99b4f3a2 302 SELFTEST_END_STMT
303
1f9995dc 304/* Evaluate VAL1 and VAL2 and compare them with ==, calling
99b4f3a2 305 ::selftest::pass if they are equal,
306 ::selftest::fail if they are non-equal. */
307
1f9995dc 308#define ASSERT_EQ(VAL1, VAL2) \
309 ASSERT_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
b73690a4 310
311/* Like ASSERT_EQ, but treat LOC as the effective location of the
312 selftest. */
313
1f9995dc 314#define ASSERT_EQ_AT(LOC, VAL1, VAL2) \
99b4f3a2 315 SELFTEST_BEGIN_STMT \
1f9995dc 316 const char *desc_ = "ASSERT_EQ (" #VAL1 ", " #VAL2 ")"; \
317 if ((VAL1) == (VAL2)) \
d7e88239 318 ::selftest::pass ((LOC), desc_); \
99b4f3a2 319 else \
d7e88239 320 ::selftest::fail ((LOC), desc_); \
99b4f3a2 321 SELFTEST_END_STMT
322
1f9995dc 323/* Evaluate VAL1 and VAL2 and compare them with known_eq, calling
466432a3 324 ::selftest::pass if they are always equal,
325 ::selftest::fail if they might be non-equal. */
326
1f9995dc 327#define ASSERT_KNOWN_EQ(VAL1, VAL2) \
328 ASSERT_KNOWN_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
466432a3 329
330/* Like ASSERT_KNOWN_EQ, but treat LOC as the effective location of the
331 selftest. */
332
1f9995dc 333#define ASSERT_KNOWN_EQ_AT(LOC, VAL1, VAL2) \
466432a3 334 SELFTEST_BEGIN_STMT \
1f9995dc 335 const char *desc = "ASSERT_KNOWN_EQ (" #VAL1 ", " #VAL2 ")"; \
336 if (known_eq (VAL1, VAL2)) \
466432a3 337 ::selftest::pass ((LOC), desc); \
338 else \
339 ::selftest::fail ((LOC), desc); \
340 SELFTEST_END_STMT
341
1f9995dc 342/* Evaluate VAL1 and VAL2 and compare them with !=, calling
99b4f3a2 343 ::selftest::pass if they are non-equal,
344 ::selftest::fail if they are equal. */
345
1f9995dc 346#define ASSERT_NE(VAL1, VAL2) \
99b4f3a2 347 SELFTEST_BEGIN_STMT \
1f9995dc 348 const char *desc_ = "ASSERT_NE (" #VAL1 ", " #VAL2 ")"; \
349 if ((VAL1) != (VAL2)) \
d7e88239 350 ::selftest::pass (SELFTEST_LOCATION, desc_); \
99b4f3a2 351 else \
d7e88239 352 ::selftest::fail (SELFTEST_LOCATION, desc_); \
99b4f3a2 353 SELFTEST_END_STMT
354
1f9995dc 355/* Evaluate VAL1 and VAL2 and compare them with maybe_ne, calling
466432a3 356 ::selftest::pass if they might be non-equal,
357 ::selftest::fail if they are known to be equal. */
358
1f9995dc 359#define ASSERT_MAYBE_NE(VAL1, VAL2) \
360 ASSERT_MAYBE_NE_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
466432a3 361
362/* Like ASSERT_MAYBE_NE, but treat LOC as the effective location of the
363 selftest. */
364
1f9995dc 365#define ASSERT_MAYBE_NE_AT(LOC, VAL1, VAL2) \
466432a3 366 SELFTEST_BEGIN_STMT \
1f9995dc 367 const char *desc = "ASSERT_MAYBE_NE (" #VAL1 ", " #VAL2 ")"; \
368 if (maybe_ne (VAL1, VAL2)) \
466432a3 369 ::selftest::pass ((LOC), desc); \
370 else \
371 ::selftest::fail ((LOC), desc); \
372 SELFTEST_END_STMT
373
d73881b0 374/* Evaluate LHS and RHS and compare them with >, calling
375 ::selftest::pass if LHS > RHS,
376 ::selftest::fail otherwise. */
377
378#define ASSERT_GT(LHS, RHS) \
379 ASSERT_GT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
380
381/* Like ASSERT_GT, but treat LOC as the effective location of the
382 selftest. */
383
384#define ASSERT_GT_AT(LOC, LHS, RHS) \
385 SELFTEST_BEGIN_STMT \
386 const char *desc_ = "ASSERT_GT (" #LHS ", " #RHS ")"; \
387 if ((LHS) > (RHS)) \
388 ::selftest::pass ((LOC), desc_); \
389 else \
390 ::selftest::fail ((LOC), desc_); \
391 SELFTEST_END_STMT
392
393/* Evaluate LHS and RHS and compare them with <, calling
394 ::selftest::pass if LHS < RHS,
395 ::selftest::fail otherwise. */
396
397#define ASSERT_LT(LHS, RHS) \
398 ASSERT_LT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
399
400/* Like ASSERT_LT, but treat LOC as the effective location of the
401 selftest. */
402
403#define ASSERT_LT_AT(LOC, LHS, RHS) \
404 SELFTEST_BEGIN_STMT \
405 const char *desc_ = "ASSERT_LT (" #LHS ", " #RHS ")"; \
406 if ((LHS) < (RHS)) \
407 ::selftest::pass ((LOC), desc_); \
408 else \
409 ::selftest::fail ((LOC), desc_); \
410 SELFTEST_END_STMT
411
1f9995dc 412/* Evaluate VAL1 and VAL2 and compare them with strcmp, calling
413 ::selftest::pass if they are equal (and both are non-NULL),
414 ::selftest::fail if they are non-equal, or are both NULL. */
99b4f3a2 415
1f9995dc 416#define ASSERT_STREQ(VAL1, VAL2) \
69ffa179 417 SELFTEST_BEGIN_STMT \
1f9995dc 418 ::selftest::assert_streq (SELFTEST_LOCATION, #VAL1, #VAL2, \
419 (VAL1), (VAL2)); \
d0982399 420 SELFTEST_END_STMT
421
30678d42 422/* Like ASSERT_STREQ, but treat LOC as the effective location of the
d0982399 423 selftest. */
424
1f9995dc 425#define ASSERT_STREQ_AT(LOC, VAL1, VAL2) \
d0982399 426 SELFTEST_BEGIN_STMT \
1f9995dc 427 ::selftest::assert_streq ((LOC), #VAL1, #VAL2, \
428 (VAL1), (VAL2)); \
99b4f3a2 429 SELFTEST_END_STMT
430
c3e800b9 431/* Evaluate HAYSTACK and NEEDLE and use strstr to determine if NEEDLE
432 is within HAYSTACK.
433 ::selftest::pass if NEEDLE is found.
434 ::selftest::fail if it is not found. */
435
436#define ASSERT_STR_CONTAINS(HAYSTACK, NEEDLE) \
437 SELFTEST_BEGIN_STMT \
438 ::selftest::assert_str_contains (SELFTEST_LOCATION, #HAYSTACK, #NEEDLE, \
439 (HAYSTACK), (NEEDLE)); \
e43345c1 440 SELFTEST_END_STMT
441
442/* Like ASSERT_STR_CONTAINS, but treat LOC as the effective location of the
443 selftest. */
444
445#define ASSERT_STR_CONTAINS_AT(LOC, HAYSTACK, NEEDLE) \
446 SELFTEST_BEGIN_STMT \
447 ::selftest::assert_str_contains (LOC, #HAYSTACK, #NEEDLE, \
448 (HAYSTACK), (NEEDLE)); \
c3e800b9 449 SELFTEST_END_STMT
450
6e8a18d1 451/* Evaluate STR and PREFIX and determine if STR starts with PREFIX.
452 ::selftest::pass if STR does start with PREFIX.
453 ::selftest::fail if does not, or either is NULL. */
454
455#define ASSERT_STR_STARTSWITH(STR, PREFIX) \
456 SELFTEST_BEGIN_STMT \
457 ::selftest::assert_str_startswith (SELFTEST_LOCATION, #STR, #PREFIX, \
458 (STR), (PREFIX)); \
459 SELFTEST_END_STMT
460
99b4f3a2 461/* Evaluate PRED1 (VAL1), calling ::selftest::pass if it is true,
462 ::selftest::fail if it is false. */
463
d7e88239 464#define ASSERT_PRED1(PRED1, VAL1) \
465 SELFTEST_BEGIN_STMT \
466 const char *desc_ = "ASSERT_PRED1 (" #PRED1 ", " #VAL1 ")"; \
467 bool actual_ = (PRED1) (VAL1); \
468 if (actual_) \
469 ::selftest::pass (SELFTEST_LOCATION, desc_); \
470 else \
471 ::selftest::fail (SELFTEST_LOCATION, desc_); \
99b4f3a2 472 SELFTEST_END_STMT
473
474#define SELFTEST_BEGIN_STMT do {
475#define SELFTEST_END_STMT } while (0)
476
477#endif /* #if CHECKING_P */
478
479#endif /* GCC_SELFTEST_H */