blob: 18dae9c2f9e7e39be67a7dcacdfdf5e93210ce81 [file] [log] [blame]
Elliott Hughes91875dc2012-09-24 17:55:15 -07001/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <gtest/gtest.h>
18
19#include <errno.h>
Elliott Hughesc9244bd2014-05-14 13:31:35 -070020#include <fcntl.h>
Elliott Hughes1d13c642013-09-23 16:02:39 -070021#include <limits.h>
Elliott Hughes7823f322014-04-14 12:11:28 -070022#include <math.h>
Elliott Hughes91875dc2012-09-24 17:55:15 -070023#include <stdio.h>
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <unistd.h>
Elliott Hughes05493712014-04-17 17:30:03 -070027#include <wchar.h>
Calin Juravle03e4ebe2014-05-08 14:42:06 +010028#include <locale.h>
29
30#include "TemporaryFile.h"
Elliott Hughes91875dc2012-09-24 17:55:15 -070031
32TEST(stdio, tmpfile_fileno_fprintf_rewind_fgets) {
33 FILE* fp = tmpfile();
34 ASSERT_TRUE(fp != NULL);
35
36 int fd = fileno(fp);
37 ASSERT_NE(fd, -1);
38
39 struct stat sb;
40 int rc = fstat(fd, &sb);
41 ASSERT_NE(rc, -1);
42 ASSERT_EQ(sb.st_mode & 0777, 0600U);
43
44 rc = fprintf(fp, "hello\n");
45 ASSERT_EQ(rc, 6);
46
47 rewind(fp);
48
49 char buf[16];
50 char* s = fgets(buf, sizeof(buf), fp);
51 ASSERT_TRUE(s != NULL);
52 ASSERT_STREQ("hello\n", s);
53
54 fclose(fp);
55}
Irina Tirdeaeac9eb42012-09-08 09:28:30 +030056
Calin Juravle6afb2a92014-05-22 11:47:47 +010057TEST(stdio, dprintf) {
58 TemporaryFile tf;
59
60 int rc = dprintf(tf.fd, "hello\n");
61 ASSERT_EQ(rc, 6);
62
63 lseek(tf.fd, SEEK_SET, 0);
Christopher Ferris9e01ea62014-05-29 12:49:35 -070064 FILE* tfile = fdopen(tf.fd, "r");
65 ASSERT_TRUE(tfile != NULL);
Calin Juravle6afb2a92014-05-22 11:47:47 +010066
Christopher Ferris9e01ea62014-05-29 12:49:35 -070067 char buf[7];
68 ASSERT_EQ(buf, fgets(buf, sizeof(buf), tfile));
Calin Juravle6afb2a92014-05-22 11:47:47 +010069 ASSERT_STREQ("hello\n", buf);
Christopher Ferris9e01ea62014-05-29 12:49:35 -070070 // Make sure there isn't anything else in the file.
71 ASSERT_EQ(NULL, fgets(buf, sizeof(buf), tfile));
72 fclose(tfile);
Calin Juravle6afb2a92014-05-22 11:47:47 +010073}
74
Irina Tirdeaeac9eb42012-09-08 09:28:30 +030075TEST(stdio, getdelim) {
76 FILE* fp = tmpfile();
77 ASSERT_TRUE(fp != NULL);
78
79 const char* line_written = "This is a test";
80 int rc = fprintf(fp, "%s", line_written);
81 ASSERT_EQ(rc, static_cast<int>(strlen(line_written)));
82
83 rewind(fp);
84
85 char* word_read = NULL;
86 size_t allocated_length = 0;
87
88 const char* expected[] = { "This ", " ", "is ", "a ", "test" };
89 for (size_t i = 0; i < 5; ++i) {
90 ASSERT_FALSE(feof(fp));
91 ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), static_cast<int>(strlen(expected[i])));
92 ASSERT_GE(allocated_length, strlen(expected[i]));
93 ASSERT_STREQ(word_read, expected[i]);
94 }
95 // The last read should have set the end-of-file indicator for the stream.
96 ASSERT_TRUE(feof(fp));
97 clearerr(fp);
98
99 // getdelim returns -1 but doesn't set errno if we're already at EOF.
100 // It should set the end-of-file indicator for the stream, though.
101 errno = 0;
102 ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800103 ASSERT_EQ(0, errno);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300104 ASSERT_TRUE(feof(fp));
105
106 free(word_read);
107 fclose(fp);
108}
109
110TEST(stdio, getdelim_invalid) {
111 FILE* fp = tmpfile();
Elliott Hughes6ad8f762013-12-19 14:56:17 -0800112 ASSERT_TRUE(fp != NULL);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300113
114 char* buffer = NULL;
115 size_t buffer_length = 0;
116
117 // The first argument can't be NULL.
118 errno = 0;
119 ASSERT_EQ(getdelim(NULL, &buffer_length, ' ', fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800120 ASSERT_EQ(EINVAL, errno);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300121
122 // The second argument can't be NULL.
123 errno = 0;
124 ASSERT_EQ(getdelim(&buffer, NULL, ' ', fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800125 ASSERT_EQ(EINVAL, errno);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300126
Elliott Hughes20f8aec2014-05-12 15:15:37 -0700127 // The underlying fd can't be closed.
128 ASSERT_EQ(0, close(fileno(fp)));
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300129 errno = 0;
130 ASSERT_EQ(getdelim(&buffer, &buffer_length, ' ', fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800131 ASSERT_EQ(EBADF, errno);
Elliott Hughes20f8aec2014-05-12 15:15:37 -0700132 fclose(fp);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300133}
134
135TEST(stdio, getline) {
136 FILE* fp = tmpfile();
137 ASSERT_TRUE(fp != NULL);
138
139 const char* line_written = "This is a test for getline\n";
140 const size_t line_count = 5;
141
142 for (size_t i = 0; i < line_count; ++i) {
143 int rc = fprintf(fp, "%s", line_written);
144 ASSERT_EQ(rc, static_cast<int>(strlen(line_written)));
145 }
146
147 rewind(fp);
148
149 char* line_read = NULL;
150 size_t allocated_length = 0;
151
152 size_t read_line_count = 0;
153 ssize_t read_char_count;
154 while ((read_char_count = getline(&line_read, &allocated_length, fp)) != -1) {
155 ASSERT_EQ(read_char_count, static_cast<int>(strlen(line_written)));
156 ASSERT_GE(allocated_length, strlen(line_written));
157 ASSERT_STREQ(line_read, line_written);
158 ++read_line_count;
159 }
160 ASSERT_EQ(read_line_count, line_count);
161
162 // The last read should have set the end-of-file indicator for the stream.
163 ASSERT_TRUE(feof(fp));
164 clearerr(fp);
165
166 // getline returns -1 but doesn't set errno if we're already at EOF.
167 // It should set the end-of-file indicator for the stream, though.
168 errno = 0;
169 ASSERT_EQ(getline(&line_read, &allocated_length, fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800170 ASSERT_EQ(0, errno);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300171 ASSERT_TRUE(feof(fp));
172
173 free(line_read);
174 fclose(fp);
175}
176
177TEST(stdio, getline_invalid) {
178 FILE* fp = tmpfile();
Elliott Hughes6ad8f762013-12-19 14:56:17 -0800179 ASSERT_TRUE(fp != NULL);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300180
181 char* buffer = NULL;
182 size_t buffer_length = 0;
183
184 // The first argument can't be NULL.
185 errno = 0;
186 ASSERT_EQ(getline(NULL, &buffer_length, fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800187 ASSERT_EQ(EINVAL, errno);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300188
189 // The second argument can't be NULL.
190 errno = 0;
191 ASSERT_EQ(getline(&buffer, NULL, fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800192 ASSERT_EQ(EINVAL, errno);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300193
Elliott Hughes20f8aec2014-05-12 15:15:37 -0700194 // The underlying fd can't be closed.
195 ASSERT_EQ(0, close(fileno(fp)));
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300196 errno = 0;
197 ASSERT_EQ(getline(&buffer, &buffer_length, fp), -1);
Elliott Hughes5e3fc432013-02-11 16:36:48 -0800198 ASSERT_EQ(EBADF, errno);
Elliott Hughes20f8aec2014-05-12 15:15:37 -0700199 fclose(fp);
Irina Tirdeaeac9eb42012-09-08 09:28:30 +0300200}
Thorsten Glaserc641caf2013-02-17 16:50:58 +0000201
202TEST(stdio, printf_ssize_t) {
Elliott Hughese2556422013-02-28 10:51:14 -0800203 // http://b/8253769
Elliott Hughese2556422013-02-28 10:51:14 -0800204 ASSERT_EQ(sizeof(ssize_t), sizeof(long int));
Elliott Hughesb6e22482013-03-08 15:28:52 -0800205 ASSERT_EQ(sizeof(ssize_t), sizeof(size_t));
206 // For our 32-bit ABI, we had a ssize_t definition that confuses GCC into saying:
Thorsten Glaserc641caf2013-02-17 16:50:58 +0000207 // error: format '%zd' expects argument of type 'signed size_t',
208 // but argument 4 has type 'ssize_t {aka long int}' [-Werror=format]
209 ssize_t v = 1;
210 char buf[32];
211 snprintf(buf, sizeof(buf), "%zd", v);
212}
Elliott Hughes6b3f49a2013-03-06 16:20:55 -0800213
Elliott Hughes05493712014-04-17 17:30:03 -0700214// https://code.google.com/p/android/issues/detail?id=64886
215TEST(stdio, snprintf_a) {
216 char buf[BUFSIZ];
217 EXPECT_EQ(23, snprintf(buf, sizeof(buf), "<%a>", 9990.235));
218 EXPECT_STREQ("<0x1.3831e147ae148p+13>", buf);
219}
220
221TEST(stdio, snprintf_lc) {
222 char buf[BUFSIZ];
223 wint_t wc = L'a';
224 EXPECT_EQ(3, snprintf(buf, sizeof(buf), "<%lc>", wc));
225 EXPECT_STREQ("<a>", buf);
226}
227
228TEST(stdio, snprintf_ls) {
229 char buf[BUFSIZ];
230 wchar_t* ws = NULL;
231 EXPECT_EQ(8, snprintf(buf, sizeof(buf), "<%ls>", ws));
232 EXPECT_STREQ("<(null)>", buf);
233
234 wchar_t chars[] = { L'h', L'i', 0 };
235 ws = chars;
236 EXPECT_EQ(4, snprintf(buf, sizeof(buf), "<%ls>", ws));
237 EXPECT_STREQ("<hi>", buf);
238}
239
240TEST(stdio, snprintf_n) {
Elliott Hughes063525c2014-05-13 11:19:57 -0700241#if defined(__BIONIC__)
Elliott Hughese2341d02014-05-02 18:16:32 -0700242 // http://b/14492135
Elliott Hughes7248a2d2013-09-24 18:01:33 -0700243 char buf[32];
Elliott Hughese2341d02014-05-02 18:16:32 -0700244 int i = 1234;
245 EXPECT_EQ(5, snprintf(buf, sizeof(buf), "a %n b", &i));
246 EXPECT_EQ(1234, i);
247 EXPECT_STREQ("a n b", buf);
248#else
249 GTEST_LOG_(INFO) << "This test does nothing.\n";
250#endif
Elliott Hughes7248a2d2013-09-24 18:01:33 -0700251}
Elliott Hughes7248a2d2013-09-24 18:01:33 -0700252
Elliott Hughes1d13c642013-09-23 16:02:39 -0700253TEST(stdio, snprintf_smoke) {
254 char buf[BUFSIZ];
255
256 snprintf(buf, sizeof(buf), "a");
257 EXPECT_STREQ("a", buf);
258
259 snprintf(buf, sizeof(buf), "%%");
260 EXPECT_STREQ("%", buf);
261
262 snprintf(buf, sizeof(buf), "01234");
263 EXPECT_STREQ("01234", buf);
264
265 snprintf(buf, sizeof(buf), "a%sb", "01234");
266 EXPECT_STREQ("a01234b", buf);
267
268 char* s = NULL;
269 snprintf(buf, sizeof(buf), "a%sb", s);
270 EXPECT_STREQ("a(null)b", buf);
271
272 snprintf(buf, sizeof(buf), "aa%scc", "bb");
273 EXPECT_STREQ("aabbcc", buf);
274
275 snprintf(buf, sizeof(buf), "a%cc", 'b');
276 EXPECT_STREQ("abc", buf);
277
278 snprintf(buf, sizeof(buf), "a%db", 1234);
279 EXPECT_STREQ("a1234b", buf);
280
281 snprintf(buf, sizeof(buf), "a%db", -8123);
282 EXPECT_STREQ("a-8123b", buf);
283
Stephen Hines6c7b3cb2013-10-11 16:03:21 -0700284 snprintf(buf, sizeof(buf), "a%hdb", static_cast<short>(0x7fff0010));
Elliott Hughes1d13c642013-09-23 16:02:39 -0700285 EXPECT_STREQ("a16b", buf);
286
Stephen Hines6c7b3cb2013-10-11 16:03:21 -0700287 snprintf(buf, sizeof(buf), "a%hhdb", static_cast<char>(0x7fffff10));
Elliott Hughes1d13c642013-09-23 16:02:39 -0700288 EXPECT_STREQ("a16b", buf);
289
290 snprintf(buf, sizeof(buf), "a%lldb", 0x1000000000LL);
291 EXPECT_STREQ("a68719476736b", buf);
292
293 snprintf(buf, sizeof(buf), "a%ldb", 70000L);
294 EXPECT_STREQ("a70000b", buf);
295
296 snprintf(buf, sizeof(buf), "a%pb", reinterpret_cast<void*>(0xb0001234));
297 EXPECT_STREQ("a0xb0001234b", buf);
298
299 snprintf(buf, sizeof(buf), "a%xz", 0x12ab);
300 EXPECT_STREQ("a12abz", buf);
301
302 snprintf(buf, sizeof(buf), "a%Xz", 0x12ab);
303 EXPECT_STREQ("a12ABz", buf);
304
305 snprintf(buf, sizeof(buf), "a%08xz", 0x123456);
306 EXPECT_STREQ("a00123456z", buf);
307
308 snprintf(buf, sizeof(buf), "a%5dz", 1234);
309 EXPECT_STREQ("a 1234z", buf);
310
311 snprintf(buf, sizeof(buf), "a%05dz", 1234);
312 EXPECT_STREQ("a01234z", buf);
313
314 snprintf(buf, sizeof(buf), "a%8dz", 1234);
315 EXPECT_STREQ("a 1234z", buf);
316
317 snprintf(buf, sizeof(buf), "a%-8dz", 1234);
318 EXPECT_STREQ("a1234 z", buf);
319
320 snprintf(buf, sizeof(buf), "A%-11sZ", "abcdef");
321 EXPECT_STREQ("Aabcdef Z", buf);
322
323 snprintf(buf, sizeof(buf), "A%s:%dZ", "hello", 1234);
324 EXPECT_STREQ("Ahello:1234Z", buf);
325
326 snprintf(buf, sizeof(buf), "a%03d:%d:%02dz", 5, 5, 5);
327 EXPECT_STREQ("a005:5:05z", buf);
328
329 void* p = NULL;
330 snprintf(buf, sizeof(buf), "a%d,%pz", 5, p);
Christopher Ferris13613132013-10-28 15:24:04 -0700331#if defined(__BIONIC__)
Elliott Hughes1d13c642013-09-23 16:02:39 -0700332 EXPECT_STREQ("a5,0x0z", buf);
Christopher Ferrisf04935c2013-12-20 18:43:21 -0800333#else // __BIONIC__
Christopher Ferris13613132013-10-28 15:24:04 -0700334 EXPECT_STREQ("a5,(nil)z", buf);
Christopher Ferrisf04935c2013-12-20 18:43:21 -0800335#endif // __BIONIC__
Elliott Hughes1d13c642013-09-23 16:02:39 -0700336
337 snprintf(buf, sizeof(buf), "a%lld,%d,%d,%dz", 0x1000000000LL, 6, 7, 8);
338 EXPECT_STREQ("a68719476736,6,7,8z", buf);
339
340 snprintf(buf, sizeof(buf), "a_%f_b", 1.23f);
341 EXPECT_STREQ("a_1.230000_b", buf);
342
Stephen Hines6c7b3cb2013-10-11 16:03:21 -0700343 snprintf(buf, sizeof(buf), "a_%g_b", 3.14);
Elliott Hughes1d13c642013-09-23 16:02:39 -0700344 EXPECT_STREQ("a_3.14_b", buf);
Alexander Ivchenkoedd7c2e2014-04-01 17:01:39 +0400345
346 snprintf(buf, sizeof(buf), "%1$s %1$s", "print_me_twice");
347 EXPECT_STREQ("print_me_twice print_me_twice", buf);
Elliott Hughes1d13c642013-09-23 16:02:39 -0700348}
349
Elliott Hughes7823f322014-04-14 12:11:28 -0700350TEST(stdio, snprintf_f_special) {
351 char buf[BUFSIZ];
352 snprintf(buf, sizeof(buf), "%f", nanf(""));
Elliott Hughes4bd97ce2014-04-10 17:48:14 -0700353 EXPECT_STRCASEEQ("NaN", buf);
Elliott Hughes7823f322014-04-14 12:11:28 -0700354
355 snprintf(buf, sizeof(buf), "%f", HUGE_VALF);
Elliott Hughes4bd97ce2014-04-10 17:48:14 -0700356 EXPECT_STRCASEEQ("Inf", buf);
Elliott Hughes7823f322014-04-14 12:11:28 -0700357}
358
359TEST(stdio, snprintf_g_special) {
360 char buf[BUFSIZ];
361 snprintf(buf, sizeof(buf), "%g", nan(""));
Elliott Hughes4bd97ce2014-04-10 17:48:14 -0700362 EXPECT_STRCASEEQ("NaN", buf);
Elliott Hughes7823f322014-04-14 12:11:28 -0700363
364 snprintf(buf, sizeof(buf), "%g", HUGE_VAL);
Elliott Hughes4bd97ce2014-04-10 17:48:14 -0700365 EXPECT_STRCASEEQ("Inf", buf);
Elliott Hughes7823f322014-04-14 12:11:28 -0700366}
367
Elliott Hughes1d13c642013-09-23 16:02:39 -0700368TEST(stdio, snprintf_d_INT_MAX) {
369 char buf[BUFSIZ];
370 snprintf(buf, sizeof(buf), "%d", INT_MAX);
371 EXPECT_STREQ("2147483647", buf);
372}
373
374TEST(stdio, snprintf_d_INT_MIN) {
375 char buf[BUFSIZ];
376 snprintf(buf, sizeof(buf), "%d", INT_MIN);
377 EXPECT_STREQ("-2147483648", buf);
378}
379
380TEST(stdio, snprintf_ld_LONG_MAX) {
381 char buf[BUFSIZ];
382 snprintf(buf, sizeof(buf), "%ld", LONG_MAX);
Elliott Hughes925753a2013-10-18 13:17:18 -0700383#if __LP64__
384 EXPECT_STREQ("9223372036854775807", buf);
385#else
Elliott Hughes1d13c642013-09-23 16:02:39 -0700386 EXPECT_STREQ("2147483647", buf);
Elliott Hughes925753a2013-10-18 13:17:18 -0700387#endif
Elliott Hughes1d13c642013-09-23 16:02:39 -0700388}
389
390TEST(stdio, snprintf_ld_LONG_MIN) {
391 char buf[BUFSIZ];
392 snprintf(buf, sizeof(buf), "%ld", LONG_MIN);
Elliott Hughes925753a2013-10-18 13:17:18 -0700393#if __LP64__
394 EXPECT_STREQ("-9223372036854775808", buf);
395#else
Elliott Hughes1d13c642013-09-23 16:02:39 -0700396 EXPECT_STREQ("-2147483648", buf);
Elliott Hughes925753a2013-10-18 13:17:18 -0700397#endif
Elliott Hughes1d13c642013-09-23 16:02:39 -0700398}
399
400TEST(stdio, snprintf_lld_LLONG_MAX) {
401 char buf[BUFSIZ];
402 snprintf(buf, sizeof(buf), "%lld", LLONG_MAX);
403 EXPECT_STREQ("9223372036854775807", buf);
404}
405
406TEST(stdio, snprintf_lld_LLONG_MIN) {
407 char buf[BUFSIZ];
408 snprintf(buf, sizeof(buf), "%lld", LLONG_MIN);
409 EXPECT_STREQ("-9223372036854775808", buf);
410}
411
Elliott Hughes4bd97ce2014-04-10 17:48:14 -0700412TEST(stdio, snprintf_e) {
413 char buf[BUFSIZ];
414
415 snprintf(buf, sizeof(buf), "%e", 1.5);
416 EXPECT_STREQ("1.500000e+00", buf);
417
418 snprintf(buf, sizeof(buf), "%Le", 1.5l);
419 EXPECT_STREQ("1.500000e+00", buf);
420}
421
Elliott Hughese77f38f2014-05-14 12:39:12 -0700422TEST(stdio, snprintf_negative_zero_5084292) {
423 char buf[BUFSIZ];
424
425 snprintf(buf, sizeof(buf), "%f", -0.0);
426 EXPECT_STREQ("-0.000000", buf);
427}
428
Elliott Hughes69f05d22014-06-05 20:10:09 -0700429TEST(stdio, snprintf_utf8_15439554) {
430 // http://b/15439554
431 char buf[BUFSIZ];
432
433 // 1-byte character.
434 snprintf(buf, sizeof(buf), "%dx%d", 1, 2);
435 EXPECT_STREQ("1x2", buf);
436 // 2-byte character.
437 snprintf(buf, sizeof(buf), "%d\xc2\xa2%d", 1, 2);
438 EXPECT_STREQ("1¢2", buf);
439 // 3-byte character.
440 snprintf(buf, sizeof(buf), "%d\xe2\x82\xac%d", 1, 2);
441 EXPECT_STREQ("1€2", buf);
442 // 4-byte character.
443 snprintf(buf, sizeof(buf), "%d\xf0\xa4\xad\xa2%d", 1, 2);
444 EXPECT_STREQ("1𤭢2", buf);
445}
446
Elliott Hughesc9244bd2014-05-14 13:31:35 -0700447TEST(stdio, fprintf_failures_7229520) {
Elliott Hughes69f05d22014-06-05 20:10:09 -0700448 // http://b/7229520
Elliott Hughesc9244bd2014-05-14 13:31:35 -0700449 FILE* fp;
450
451 // Unbuffered case where the fprintf(3) itself fails.
452 ASSERT_NE(nullptr, fp = tmpfile());
453 setbuf(fp, NULL);
454 ASSERT_EQ(4, fprintf(fp, "epic"));
455 ASSERT_EQ(0, close(fileno(fp)));
456 ASSERT_EQ(-1, fprintf(fp, "fail"));
457 ASSERT_EQ(-1, fclose(fp));
458
459 // Buffered case where we won't notice until the fclose(3).
460 // It's likely this is what was actually seen in http://b/7229520,
461 // and that expecting fprintf to fail is setting yourself up for
462 // disappointment. Remember to check fclose(3)'s return value, kids!
463 ASSERT_NE(nullptr, fp = tmpfile());
464 ASSERT_EQ(4, fprintf(fp, "epic"));
465 ASSERT_EQ(0, close(fileno(fp)));
466 ASSERT_EQ(4, fprintf(fp, "fail"));
467 ASSERT_EQ(-1, fclose(fp));
468}
469
Elliott Hughes6b3f49a2013-03-06 16:20:55 -0800470TEST(stdio, popen) {
471 FILE* fp = popen("cat /proc/version", "r");
472 ASSERT_TRUE(fp != NULL);
473
474 char buf[16];
475 char* s = fgets(buf, sizeof(buf), fp);
476 buf[13] = '\0';
477 ASSERT_STREQ("Linux version", s);
478
479 ASSERT_EQ(0, pclose(fp));
480}
Elliott Hughes6b05c8e2013-04-11 13:54:48 -0700481
482TEST(stdio, getc) {
483 FILE* fp = fopen("/proc/version", "r");
484 ASSERT_TRUE(fp != NULL);
485 ASSERT_EQ('L', getc(fp));
486 ASSERT_EQ('i', getc(fp));
487 ASSERT_EQ('n', getc(fp));
488 ASSERT_EQ('u', getc(fp));
489 ASSERT_EQ('x', getc(fp));
490 fclose(fp);
491}
492
493TEST(stdio, putc) {
494 FILE* fp = fopen("/proc/version", "r");
495 ASSERT_TRUE(fp != NULL);
496 ASSERT_EQ(EOF, putc('x', fp));
497 fclose(fp);
498}
Elliott Hughes603332f2014-03-12 17:10:41 -0700499
500TEST(stdio, sscanf) {
501 char s1[123];
502 int i1;
503 double d1;
504 char s2[123];
505 ASSERT_EQ(3, sscanf(" hello 123 1.23 ", "%s %i %lf %s", s1, &i1, &d1, s2));
506 ASSERT_STREQ("hello", s1);
507 ASSERT_EQ(123, i1);
Christopher Ferrisf171b342014-03-17 16:40:26 -0700508 ASSERT_DOUBLE_EQ(1.23, d1);
Elliott Hughes603332f2014-03-12 17:10:41 -0700509}
Elliott Hughes53b24382014-05-02 18:29:25 -0700510
511TEST(stdio, cantwrite_EBADF) {
512 // If we open a file read-only...
513 FILE* fp = fopen("/proc/version", "r");
514
515 // ...all attempts to write to that file should return failure.
516
517 // They should also set errno to EBADF. This isn't POSIX, but it's traditional.
518 // glibc gets the wide-character functions wrong.
519
520 errno = 0;
521 EXPECT_EQ(EOF, putc('x', fp));
522 EXPECT_EQ(EBADF, errno);
523
524 errno = 0;
525 EXPECT_EQ(EOF, fprintf(fp, "hello"));
526 EXPECT_EQ(EBADF, errno);
527
528 errno = 0;
529 EXPECT_EQ(EOF, fwprintf(fp, L"hello"));
Elliott Hughes063525c2014-05-13 11:19:57 -0700530#if defined(__BIONIC__)
Elliott Hughes53b24382014-05-02 18:29:25 -0700531 EXPECT_EQ(EBADF, errno);
532#endif
533
534 errno = 0;
Elliott Hughes53b24382014-05-02 18:29:25 -0700535 EXPECT_EQ(0U, fwrite("hello", 1, 2, fp));
536 EXPECT_EQ(EBADF, errno);
537
538 errno = 0;
539 EXPECT_EQ(EOF, fputs("hello", fp));
540 EXPECT_EQ(EBADF, errno);
541
542 errno = 0;
543 EXPECT_EQ(WEOF, fputwc(L'x', fp));
Elliott Hughes063525c2014-05-13 11:19:57 -0700544#if defined(__BIONIC__)
Elliott Hughes53b24382014-05-02 18:29:25 -0700545 EXPECT_EQ(EBADF, errno);
546#endif
547}
Calin Juravle03e4ebe2014-05-08 14:42:06 +0100548
549// Tests that we can only have a consistent and correct fpos_t when using
550// f*pos functions (i.e. fpos doesn't get inside a multi byte character).
551TEST(stdio, consistent_fpos_t) {
552 ASSERT_STREQ("C.UTF-8", setlocale(LC_CTYPE, "C.UTF-8"));
553 uselocale(LC_GLOBAL_LOCALE);
554
555 FILE* fp = tmpfile();
556 ASSERT_TRUE(fp != NULL);
557
558 wchar_t mb_one_bytes = L'h';
559 wchar_t mb_two_bytes = 0x00a2;
560 wchar_t mb_three_bytes = 0x20ac;
561 wchar_t mb_four_bytes = 0x24b62;
562
563 // Write to file.
564 ASSERT_EQ(mb_one_bytes, static_cast<wchar_t>(fputwc(mb_one_bytes, fp)));
565 ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fputwc(mb_two_bytes, fp)));
566 ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fputwc(mb_three_bytes, fp)));
567 ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fputwc(mb_four_bytes, fp)));
568
569 rewind(fp);
570
571 // Record each character position.
572 fpos_t pos1;
573 fpos_t pos2;
574 fpos_t pos3;
575 fpos_t pos4;
576 fpos_t pos5;
577 EXPECT_EQ(0, fgetpos(fp, &pos1));
578 ASSERT_EQ(mb_one_bytes, static_cast<wchar_t>(fgetwc(fp)));
579 EXPECT_EQ(0, fgetpos(fp, &pos2));
580 ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fgetwc(fp)));
581 EXPECT_EQ(0, fgetpos(fp, &pos3));
582 ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fgetwc(fp)));
583 EXPECT_EQ(0, fgetpos(fp, &pos4));
584 ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fgetwc(fp)));
585 EXPECT_EQ(0, fgetpos(fp, &pos5));
586
Elliott Hughes063525c2014-05-13 11:19:57 -0700587#if defined(__BIONIC__)
Calin Juravle03e4ebe2014-05-08 14:42:06 +0100588 // Bionic's fpos_t is just an alias for off_t. This is inherited from OpenBSD
589 // upstream. Glibc differs by storing the mbstate_t inside its fpos_t. In
590 // Bionic (and upstream OpenBSD) the mbstate_t is stored inside the FILE
591 // structure.
592 ASSERT_EQ(0, static_cast<off_t>(pos1));
593 ASSERT_EQ(1, static_cast<off_t>(pos2));
594 ASSERT_EQ(3, static_cast<off_t>(pos3));
595 ASSERT_EQ(6, static_cast<off_t>(pos4));
596 ASSERT_EQ(10, static_cast<off_t>(pos5));
597#endif
598
599 // Exercise back and forth movements of the position.
600 ASSERT_EQ(0, fsetpos(fp, &pos2));
601 ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fgetwc(fp)));
602 ASSERT_EQ(0, fsetpos(fp, &pos1));
603 ASSERT_EQ(mb_one_bytes, static_cast<wchar_t>(fgetwc(fp)));
604 ASSERT_EQ(0, fsetpos(fp, &pos4));
605 ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fgetwc(fp)));
606 ASSERT_EQ(0, fsetpos(fp, &pos3));
607 ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fgetwc(fp)));
608 ASSERT_EQ(0, fsetpos(fp, &pos5));
609 ASSERT_EQ(WEOF, fgetwc(fp));
610
611 fclose(fp);
612}
613
614// Exercise the interaction between fpos and seek.
615TEST(stdio, fpos_t_and_seek) {
616 ASSERT_STREQ("C.UTF-8", setlocale(LC_CTYPE, "C.UTF-8"));
617 uselocale(LC_GLOBAL_LOCALE);
618
Calin Juravle9b95ea92014-05-14 17:07:10 +0100619 // In glibc-2.16 fseek doesn't work properly in wide mode
620 // (https://sourceware.org/bugzilla/show_bug.cgi?id=14543). One workaround is
621 // to close and re-open the file. We do it in order to make the test pass
622 // with all glibcs.
623
Calin Juravle03e4ebe2014-05-08 14:42:06 +0100624 TemporaryFile tf;
625 FILE* fp = fdopen(tf.fd, "w+");
626 ASSERT_TRUE(fp != NULL);
627
628 wchar_t mb_two_bytes = 0x00a2;
629 wchar_t mb_three_bytes = 0x20ac;
630 wchar_t mb_four_bytes = 0x24b62;
631
632 // Write to file.
633 ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fputwc(mb_two_bytes, fp)));
634 ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fputwc(mb_three_bytes, fp)));
635 ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fputwc(mb_four_bytes, fp)));
636
637 fflush(fp);
638 fclose(fp);
639
640 fp = fopen(tf.filename, "r");
641 ASSERT_TRUE(fp != NULL);
642
643 // Store a valid position.
644 fpos_t mb_two_bytes_pos;
645 ASSERT_EQ(0, fgetpos(fp, &mb_two_bytes_pos));
646
647 // Move inside mb_four_bytes with fseek.
648 long offset_inside_mb = 6;
649 ASSERT_EQ(0, fseek(fp, offset_inside_mb, SEEK_SET));
650
651 // Store the "inside multi byte" position.
652 fpos_t pos_inside_mb;
653 ASSERT_EQ(0, fgetpos(fp, &pos_inside_mb));
Elliott Hughes063525c2014-05-13 11:19:57 -0700654#if defined(__BIONIC__)
655 ASSERT_EQ(offset_inside_mb, static_cast<off_t>(pos_inside_mb));
656#endif
Calin Juravle03e4ebe2014-05-08 14:42:06 +0100657
658 // Reading from within a byte should produce an error.
659 ASSERT_EQ(WEOF, fgetwc(fp));
660 ASSERT_EQ(EILSEQ, errno);
661
662 // Reverting to a valid position should work.
663 ASSERT_EQ(0, fsetpos(fp, &mb_two_bytes_pos));
664 ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fgetwc(fp)));
665
666 // Moving withing a multi byte with fsetpos should work but reading should
667 // produce an error.
668 ASSERT_EQ(0, fsetpos(fp, &pos_inside_mb));
669 ASSERT_EQ(WEOF, fgetwc(fp));
670 ASSERT_EQ(EILSEQ, errno);
671
672 fclose(fp);
673}