1570af302Sopenharmony_ci/* 2570af302Sopenharmony_ci * Copyright (c) 2022 Huawei Device Co., Ltd. 3570af302Sopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License"); 4570af302Sopenharmony_ci * you may not use this file except in compliance with the License. 5570af302Sopenharmony_ci * You may obtain a copy of the License at 6570af302Sopenharmony_ci * 7570af302Sopenharmony_ci * http://www.apache.org/licenses/LICENSE-2.0 8570af302Sopenharmony_ci * 9570af302Sopenharmony_ci * Unless required by applicable law or agreed to in writing, software 10570af302Sopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS, 11570af302Sopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12570af302Sopenharmony_ci * See the License for the specific language governing permissions and 13570af302Sopenharmony_ci * limitations under the License. 14570af302Sopenharmony_ci */ 15570af302Sopenharmony_ci 16570af302Sopenharmony_ci#include <fcntl.h> 17570af302Sopenharmony_ci#include <stdio.h> 18570af302Sopenharmony_ci#include "test.h" 19570af302Sopenharmony_ci 20570af302Sopenharmony_ciconst char *path = "/data/readtest.txt"; 21570af302Sopenharmony_ci 22570af302Sopenharmony_ci/** 23570af302Sopenharmony_ci * @tc.name : getchar_0100 24570af302Sopenharmony_ci * @tc.desc : Verify that the characters in the file can be get 25570af302Sopenharmony_ci * @tc.level : Level 0 26570af302Sopenharmony_ci */ 27570af302Sopenharmony_civoid getchar_0100(void) 28570af302Sopenharmony_ci{ 29570af302Sopenharmony_ci char str[] = "t"; 30570af302Sopenharmony_ci int fd = open(path, O_RDWR | O_CREAT, TEST_MODE); 31570af302Sopenharmony_ci if (fd < 0) { 32570af302Sopenharmony_ci t_error("%s open failed\n", __func__); 33570af302Sopenharmony_ci } 34570af302Sopenharmony_ci ssize_t ret = write(fd, str, sizeof(str)); 35570af302Sopenharmony_ci if (ret < 0) { 36570af302Sopenharmony_ci t_error("%s write failed\n", __func__); 37570af302Sopenharmony_ci } 38570af302Sopenharmony_ci 39570af302Sopenharmony_ci FILE *fp = freopen(path, "r", stdin); 40570af302Sopenharmony_ci if (!fp) { 41570af302Sopenharmony_ci t_error("%s freopen failed\n", __func__); 42570af302Sopenharmony_ci } 43570af302Sopenharmony_ci 44570af302Sopenharmony_ci char ch = getchar(); 45570af302Sopenharmony_ci if (ch != 't') { 46570af302Sopenharmony_ci t_error("%s getchar failed\n", __func__); 47570af302Sopenharmony_ci } 48570af302Sopenharmony_ci 49570af302Sopenharmony_ci close(fd); 50570af302Sopenharmony_ci remove(path); 51570af302Sopenharmony_ci} 52570af302Sopenharmony_ci 53570af302Sopenharmony_ciint main(int argc, char *argv[]) 54570af302Sopenharmony_ci{ 55570af302Sopenharmony_ci getchar_0100(); 56570af302Sopenharmony_ci return t_status; 57570af302Sopenharmony_ci}