Elliott Hughes | 91875dc | 2012-09-24 17:55:15 -0700 | [diff] [blame] | 1 | /* |
| 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> |
| 20 | #include <stdio.h> |
| 21 | #include <sys/types.h> |
| 22 | #include <sys/stat.h> |
| 23 | #include <unistd.h> |
| 24 | |
| 25 | TEST(stdio, tmpfile_fileno_fprintf_rewind_fgets) { |
| 26 | FILE* fp = tmpfile(); |
| 27 | ASSERT_TRUE(fp != NULL); |
| 28 | |
| 29 | int fd = fileno(fp); |
| 30 | ASSERT_NE(fd, -1); |
| 31 | |
| 32 | struct stat sb; |
| 33 | int rc = fstat(fd, &sb); |
| 34 | ASSERT_NE(rc, -1); |
| 35 | ASSERT_EQ(sb.st_mode & 0777, 0600U); |
| 36 | |
| 37 | rc = fprintf(fp, "hello\n"); |
| 38 | ASSERT_EQ(rc, 6); |
| 39 | |
| 40 | rewind(fp); |
| 41 | |
| 42 | char buf[16]; |
| 43 | char* s = fgets(buf, sizeof(buf), fp); |
| 44 | ASSERT_TRUE(s != NULL); |
| 45 | ASSERT_STREQ("hello\n", s); |
| 46 | |
| 47 | fclose(fp); |
| 48 | } |
Irina Tirdea | eac9eb4 | 2012-09-08 09:28:30 +0300 | [diff] [blame] | 49 | |
| 50 | TEST(stdio, getdelim) { |
| 51 | FILE* fp = tmpfile(); |
| 52 | ASSERT_TRUE(fp != NULL); |
| 53 | |
| 54 | const char* line_written = "This is a test"; |
| 55 | int rc = fprintf(fp, "%s", line_written); |
| 56 | ASSERT_EQ(rc, static_cast<int>(strlen(line_written))); |
| 57 | |
| 58 | rewind(fp); |
| 59 | |
| 60 | char* word_read = NULL; |
| 61 | size_t allocated_length = 0; |
| 62 | |
| 63 | const char* expected[] = { "This ", " ", "is ", "a ", "test" }; |
| 64 | for (size_t i = 0; i < 5; ++i) { |
| 65 | ASSERT_FALSE(feof(fp)); |
| 66 | ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), static_cast<int>(strlen(expected[i]))); |
| 67 | ASSERT_GE(allocated_length, strlen(expected[i])); |
| 68 | ASSERT_STREQ(word_read, expected[i]); |
| 69 | } |
| 70 | // The last read should have set the end-of-file indicator for the stream. |
| 71 | ASSERT_TRUE(feof(fp)); |
| 72 | clearerr(fp); |
| 73 | |
| 74 | // getdelim returns -1 but doesn't set errno if we're already at EOF. |
| 75 | // It should set the end-of-file indicator for the stream, though. |
| 76 | errno = 0; |
| 77 | ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), -1); |
| 78 | ASSERT_EQ(errno, 0); |
| 79 | ASSERT_TRUE(feof(fp)); |
| 80 | |
| 81 | free(word_read); |
| 82 | fclose(fp); |
| 83 | } |
| 84 | |
| 85 | TEST(stdio, getdelim_invalid) { |
| 86 | FILE* fp = tmpfile(); |
| 87 | |
| 88 | char* buffer = NULL; |
| 89 | size_t buffer_length = 0; |
| 90 | |
| 91 | // The first argument can't be NULL. |
| 92 | errno = 0; |
| 93 | ASSERT_EQ(getdelim(NULL, &buffer_length, ' ', fp), -1); |
| 94 | ASSERT_EQ(errno, EINVAL); |
| 95 | |
| 96 | // The second argument can't be NULL. |
| 97 | errno = 0; |
| 98 | ASSERT_EQ(getdelim(&buffer, NULL, ' ', fp), -1); |
| 99 | ASSERT_EQ(errno, EINVAL); |
| 100 | |
| 101 | // The stream can't be closed. |
| 102 | fclose(fp); |
| 103 | errno = 0; |
| 104 | ASSERT_EQ(getdelim(&buffer, &buffer_length, ' ', fp), -1); |
| 105 | ASSERT_EQ(errno, EBADF); |
| 106 | } |
| 107 | |
| 108 | TEST(stdio, getline) { |
| 109 | FILE* fp = tmpfile(); |
| 110 | ASSERT_TRUE(fp != NULL); |
| 111 | |
| 112 | const char* line_written = "This is a test for getline\n"; |
| 113 | const size_t line_count = 5; |
| 114 | |
| 115 | for (size_t i = 0; i < line_count; ++i) { |
| 116 | int rc = fprintf(fp, "%s", line_written); |
| 117 | ASSERT_EQ(rc, static_cast<int>(strlen(line_written))); |
| 118 | } |
| 119 | |
| 120 | rewind(fp); |
| 121 | |
| 122 | char* line_read = NULL; |
| 123 | size_t allocated_length = 0; |
| 124 | |
| 125 | size_t read_line_count = 0; |
| 126 | ssize_t read_char_count; |
| 127 | while ((read_char_count = getline(&line_read, &allocated_length, fp)) != -1) { |
| 128 | ASSERT_EQ(read_char_count, static_cast<int>(strlen(line_written))); |
| 129 | ASSERT_GE(allocated_length, strlen(line_written)); |
| 130 | ASSERT_STREQ(line_read, line_written); |
| 131 | ++read_line_count; |
| 132 | } |
| 133 | ASSERT_EQ(read_line_count, line_count); |
| 134 | |
| 135 | // The last read should have set the end-of-file indicator for the stream. |
| 136 | ASSERT_TRUE(feof(fp)); |
| 137 | clearerr(fp); |
| 138 | |
| 139 | // getline returns -1 but doesn't set errno if we're already at EOF. |
| 140 | // It should set the end-of-file indicator for the stream, though. |
| 141 | errno = 0; |
| 142 | ASSERT_EQ(getline(&line_read, &allocated_length, fp), -1); |
| 143 | ASSERT_EQ(errno, 0); |
| 144 | ASSERT_TRUE(feof(fp)); |
| 145 | |
| 146 | free(line_read); |
| 147 | fclose(fp); |
| 148 | } |
| 149 | |
| 150 | TEST(stdio, getline_invalid) { |
| 151 | FILE* fp = tmpfile(); |
| 152 | |
| 153 | char* buffer = NULL; |
| 154 | size_t buffer_length = 0; |
| 155 | |
| 156 | // The first argument can't be NULL. |
| 157 | errno = 0; |
| 158 | ASSERT_EQ(getline(NULL, &buffer_length, fp), -1); |
| 159 | ASSERT_EQ(errno, EINVAL); |
| 160 | |
| 161 | // The second argument can't be NULL. |
| 162 | errno = 0; |
| 163 | ASSERT_EQ(getline(&buffer, NULL, fp), -1); |
| 164 | ASSERT_EQ(errno, EINVAL); |
| 165 | |
| 166 | // The stream can't be closed. |
| 167 | fclose(fp); |
| 168 | errno = 0; |
| 169 | ASSERT_EQ(getline(&buffer, &buffer_length, fp), -1); |
| 170 | ASSERT_EQ(errno, EBADF); |
| 171 | } |