open_memstream2_test.c revision 313498
1/*- 2 * Copyright (c) 2013 Hudson River Trading LLC 3 * Written by: John H. Baldwin <jhb@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: stable/10/lib/libc/tests/stdio/open_memstream2_test.c 313498 2017-02-10 01:13:12Z ngie $"); 30 31#include <err.h> 32#include <errno.h> 33#include <limits.h> 34#include <stdint.h> 35#include <stdio.h> 36#include <stdlib.h> 37#include <string.h> 38#include <wchar.h> 39 40#include <atf-c.h> 41 42static char *buf; 43static size_t len; 44 45static void 46assert_stream(const char *contents) 47{ 48 if (strlen(contents) != len) 49 printf("bad length %zd for \"%s\"\n", len, contents); 50 else if (strncmp(buf, contents, strlen(contents)) != 0) 51 printf("bad buffer \"%s\" for \"%s\"\n", buf, contents); 52} 53 54ATF_TC_WITHOUT_HEAD(open_group_test); 55ATF_TC_BODY(open_group_test, tc) 56{ 57 FILE *fp; 58 off_t eob; 59 60 fp = open_memstream(&buf, &len); 61 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed"); 62 63 fprintf(fp, "hello my world"); 64 fflush(fp); 65 assert_stream("hello my world"); 66 eob = ftello(fp); 67 rewind(fp); 68 fprintf(fp, "good-bye"); 69 fseeko(fp, eob, SEEK_SET); 70 fclose(fp); 71 assert_stream("good-bye world"); 72 free(buf); 73} 74 75ATF_TC_WITHOUT_HEAD(simple_tests); 76ATF_TC_BODY(simple_tests, tc) 77{ 78 static const char zerobuf[] = 79 { 'f', 'o', 'o', 0, 0, 0, 0, 'b', 'a', 'r', 0 }; 80 char c; 81 FILE *fp; 82 83 fp = open_memstream(&buf, NULL); 84 ATF_REQUIRE_MSG(fp == NULL, "open_memstream did not fail"); 85 ATF_REQUIRE_MSG(errno == EINVAL, 86 "open_memstream didn't fail with EINVAL"); 87 fp = open_memstream(NULL, &len); 88 ATF_REQUIRE_MSG(fp == NULL, "open_memstream did not fail"); 89 ATF_REQUIRE_MSG(errno == EINVAL, 90 "open_memstream didn't fail with EINVAL"); 91 fp = open_memstream(&buf, &len); 92 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed; errno=%d", errno); 93 fflush(fp); 94 assert_stream(""); 95 if (fwide(fp, 0) >= 0) 96 printf("stream is not byte-oriented\n"); 97 98 fprintf(fp, "fo"); 99 fflush(fp); 100 assert_stream("fo"); 101 fputc('o', fp); 102 fflush(fp); 103 assert_stream("foo"); 104 rewind(fp); 105 fflush(fp); 106 assert_stream(""); 107 fseek(fp, 0, SEEK_END); 108 fflush(fp); 109 assert_stream("foo"); 110 111 /* 112 * Test seeking out past the current end. Should zero-fill the 113 * intermediate area. 114 */ 115 fseek(fp, 4, SEEK_END); 116 fprintf(fp, "bar"); 117 fflush(fp); 118 119 /* 120 * Can't use assert_stream() here since this should contain 121 * embedded null characters. 122 */ 123 if (len != 10) 124 printf("bad length %zd for zero-fill test\n", len); 125 else if (memcmp(buf, zerobuf, sizeof(zerobuf)) != 0) 126 printf("bad buffer for zero-fill test\n"); 127 128 fseek(fp, 3, SEEK_SET); 129 fprintf(fp, " in "); 130 fflush(fp); 131 assert_stream("foo in "); 132 fseek(fp, 0, SEEK_END); 133 fflush(fp); 134 assert_stream("foo in bar"); 135 136 rewind(fp); 137 if (fread(&c, sizeof(c), 1, fp) != 0) 138 printf("fread did not fail\n"); 139 else if (!ferror(fp)) 140 printf("error indicator not set after fread\n"); 141 else 142 clearerr(fp); 143 144 fseek(fp, 4, SEEK_SET); 145 fprintf(fp, "bar baz"); 146 fclose(fp); 147 assert_stream("foo bar baz"); 148 free(buf); 149} 150 151ATF_TC_WITHOUT_HEAD(seek_tests); 152ATF_TC_BODY(seek_tests, tc) 153{ 154 FILE *fp; 155 156 fp = open_memstream(&buf, &len); 157 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed: %d", errno); 158 159#define SEEK_FAIL(offset, whence, error) do { \ 160 errno = 0; \ 161 ATF_REQUIRE_MSG(fseeko(fp, (offset), (whence)) != 0, \ 162 "fseeko(%s, %s) did not fail, set pos to %jd\n", \ 163 __STRING(offset), __STRING(whence), \ 164 (intmax_t)ftello(fp)); \ 165 ATF_REQUIRE_MSG(errno == (error), \ 166 "fseeko(%s, %s) failed with %d rather than %s\n", \ 167 __STRING(offset), __STRING(whence), errno, \ 168 __STRING(error)); \ 169} while (0) 170 171#define SEEK_OK(offset, whence, result) do { \ 172 ATF_REQUIRE_MSG(fseeko(fp, (offset), (whence)) == 0, \ 173 "fseeko(%s, %s) failed: %s", \ 174 __STRING(offset), __STRING(whence), strerror(errno)); \ 175 ATF_REQUIRE_MSG(ftello(fp) == (result), \ 176 "fseeko(%s, %s) seeked to %jd rather than %s\n", \ 177 __STRING(offset), __STRING(whence), \ 178 (intmax_t)ftello(fp), __STRING(result)); \ 179} while (0) 180 181 SEEK_FAIL(-1, SEEK_SET, EINVAL); 182 SEEK_FAIL(-1, SEEK_CUR, EINVAL); 183 SEEK_FAIL(-1, SEEK_END, EINVAL); 184 fprintf(fp, "foo"); 185 SEEK_OK(-1, SEEK_CUR, 2); 186 SEEK_OK(0, SEEK_SET, 0); 187 SEEK_OK(-1, SEEK_END, 2); 188 SEEK_OK(OFF_MAX - 1, SEEK_SET, OFF_MAX - 1); 189 SEEK_FAIL(2, SEEK_CUR, EOVERFLOW); 190 fclose(fp); 191} 192 193ATF_TP_ADD_TCS(tp) 194{ 195 196 ATF_TP_ADD_TC(tp, open_group_test); 197 ATF_TP_ADD_TC(tp, simple_tests); 198 ATF_TP_ADD_TC(tp, seek_tests); 199 200 return (atf_no_error()); 201} 202