freebsd_open_wmemstream.c
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 30 #include <err.h> 31 #include <errno.h> 32 #include <limits.h> 33 #include <stdint.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <wchar.h> 38 39 #include <darwintest.h> 40 41 static wchar_t *buf; 42 static size_t len; 43 44 static void 45 assert_stream(const wchar_t *contents) 46 { 47 if (wcslen(contents) != len) 48 printf("bad length %zd for \"%ls\"\n", len, contents); 49 else if (wcsncmp(buf, contents, wcslen(contents)) != 0) 50 printf("bad buffer \"%ls\" for \"%ls\"\n", buf, contents); 51 } 52 53 T_DECL(freebsd_open_wmemstream_open_group_test, "") 54 { 55 FILE *fp; 56 off_t eob; 57 58 fp = open_wmemstream(&buf, &len); 59 T_ASSERT_NOTNULL(fp, "open_wmemstream failed"); 60 61 fwprintf(fp, L"hello my world"); 62 fflush(fp); 63 assert_stream(L"hello my world"); 64 eob = ftello(fp); 65 rewind(fp); 66 fwprintf(fp, L"good-bye"); 67 fseeko(fp, eob, SEEK_SET); 68 fclose(fp); 69 assert_stream(L"good-bye world"); 70 free(buf); 71 } 72 73 T_DECL(freebsd_open_wmemstream_simple_tests, "") 74 { 75 static const wchar_t zerobuf[] = 76 { L'f', L'o', L'o', 0, 0, 0, 0, L'b', L'a', L'r', 0 }; 77 wchar_t c; 78 FILE *fp; 79 80 fp = open_wmemstream(&buf, NULL); 81 T_ASSERT_NULL(fp, "open_wmemstream did not fail"); 82 T_ASSERT_EQ(errno, EINVAL, "open_wmemstream didn't fail with EINVAL"); 83 fp = open_wmemstream(NULL, &len); 84 T_ASSERT_NULL(fp, "open_wmemstream did not fail"); 85 T_ASSERT_EQ(errno, EINVAL, "open_wmemstream didn't fail with EINVAL"); 86 fp = open_wmemstream(&buf, &len); 87 T_ASSERT_NOTNULL(fp, "open_memstream failed, errno=%d", errno); 88 fflush(fp); 89 assert_stream(L""); 90 if (fwide(fp, 0) <= 0) 91 printf("stream is not wide-oriented\n"); 92 93 fwprintf(fp, L"fo"); 94 fflush(fp); 95 assert_stream(L"fo"); 96 fputwc(L'o', fp); 97 fflush(fp); 98 assert_stream(L"foo"); 99 rewind(fp); 100 fflush(fp); 101 assert_stream(L""); 102 fseek(fp, 0, SEEK_END); 103 fflush(fp); 104 assert_stream(L"foo"); 105 106 /* 107 * Test seeking out past the current end. Should zero-fill the 108 * intermediate area. 109 */ 110 fseek(fp, 4, SEEK_END); 111 fwprintf(fp, L"bar"); 112 fflush(fp); 113 114 /* 115 * Can't use assert_stream() here since this should contain 116 * embedded null characters. 117 */ 118 if (len != 10) 119 printf("bad length %zd for zero-fill test\n", len); 120 else if (memcmp(buf, zerobuf, sizeof(zerobuf)) != 0) 121 printf("bad buffer for zero-fill test\n"); 122 123 fseek(fp, 3, SEEK_SET); 124 fwprintf(fp, L" in "); 125 fflush(fp); 126 assert_stream(L"foo in "); 127 fseek(fp, 0, SEEK_END); 128 fflush(fp); 129 assert_stream(L"foo in bar"); 130 131 rewind(fp); 132 if (fread(&c, sizeof(c), 1, fp) != 0) 133 printf("fread did not fail\n"); 134 else if (!ferror(fp)) 135 printf("error indicator not set after fread\n"); 136 else 137 clearerr(fp); 138 139 fseek(fp, 4, SEEK_SET); 140 fwprintf(fp, L"bar baz"); 141 fclose(fp); 142 assert_stream(L"foo bar baz"); 143 free(buf); 144 } 145 146 T_DECL(freebsd_open_wmemstream_seek_tests, "") 147 { 148 FILE *fp; 149 150 fp = open_wmemstream(&buf, &len); 151 T_ASSERT_NOTNULL(fp, "open_wmemstream failed, errno=%d", errno); 152 153 #define SEEK_FAIL(offset, whence, error) do { \ 154 errno = 0; \ 155 T_ASSERT_NE(fseeko(fp, (offset), (whence)), 0, \ 156 "fseeko(%s, %s) did not fail, set pos to %jd", \ 157 __STRING(offset), __STRING(whence), \ 158 (intmax_t)ftello(fp)); \ 159 T_ASSERT_EQ(errno, (error), \ 160 "fseeko(%s, %s) failed with %d rather than %s", \ 161 __STRING(offset), __STRING(whence), errno, \ 162 __STRING(error)); \ 163 } while (0) 164 165 #define SEEK_OK(offset, whence, result) do { \ 166 T_ASSERT_EQ(fseeko(fp, (offset), (whence)), 0, \ 167 "fseeko(%s, %s) failed: %s", \ 168 __STRING(offset), __STRING(whence), strerror(errno)); \ 169 T_ASSERT_EQ(ftello(fp), (off_t)(result), \ 170 "fseeko(%s, %s) seeked to %jd rather than %s", \ 171 __STRING(offset), __STRING(whence), \ 172 (intmax_t)ftello(fp), __STRING(result)); \ 173 } while (0) 174 175 SEEK_FAIL(-1, SEEK_SET, EINVAL); 176 SEEK_FAIL(-1, SEEK_CUR, EINVAL); 177 SEEK_FAIL(-1, SEEK_END, EINVAL); 178 fwprintf(fp, L"foo"); 179 SEEK_OK(-1, SEEK_CUR, 2); 180 SEEK_OK(0, SEEK_SET, 0); 181 SEEK_OK(-1, SEEK_END, 2); 182 SEEK_OK(OFF_MAX - 1, SEEK_SET, OFF_MAX - 1); 183 SEEK_FAIL(2, SEEK_CUR, EOVERFLOW); 184 fclose(fp); 185 }