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 <stdlib.h> 19570af302Sopenharmony_ci#include "functionalext.h" 20570af302Sopenharmony_ci 21570af302Sopenharmony_ciconst int32_t CREAT_MODE = 666; 22570af302Sopenharmony_ci 23570af302Sopenharmony_ci/** 24570af302Sopenharmony_ci * @tc.name : rewind_0100 25570af302Sopenharmony_ci * @tc.desc : Verify rewind process success 26570af302Sopenharmony_ci * @tc.level : Level 0 27570af302Sopenharmony_ci */ 28570af302Sopenharmony_civoid rewind_0100(void) 29570af302Sopenharmony_ci{ 30570af302Sopenharmony_ci int32_t ret = creat("/data/rewind_0100.txt", CREAT_MODE); 31570af302Sopenharmony_ci if (ret < 0) { 32570af302Sopenharmony_ci EXPECT_MT("rewind_0100", ret, 0); 33570af302Sopenharmony_ci return; 34570af302Sopenharmony_ci } 35570af302Sopenharmony_ci 36570af302Sopenharmony_ci FILE *fptr = fopen("/data/rewind_0100.txt", "w"); 37570af302Sopenharmony_ci EXPECT_PTRNE("rewind_0100", fptr, NULL); 38570af302Sopenharmony_ci char str[] = "test"; 39570af302Sopenharmony_ci fwrite(str, 1, sizeof(str), fptr); 40570af302Sopenharmony_ci ret = fclose(fptr); 41570af302Sopenharmony_ci EXPECT_EQ("rewind_0100", ret, 0); 42570af302Sopenharmony_ci 43570af302Sopenharmony_ci fptr = fopen("/data/rewind_0100.txt", "r"); 44570af302Sopenharmony_ci EXPECT_PTRNE("rewind_0100", fptr, NULL); 45570af302Sopenharmony_ci int ch; 46570af302Sopenharmony_ci while ( (ch = fgetc(fptr)) != EOF ){ 47570af302Sopenharmony_ci break; 48570af302Sopenharmony_ci } 49570af302Sopenharmony_ci 50570af302Sopenharmony_ci rewind(fptr); 51570af302Sopenharmony_ci EXPECT_FALSE("rewind_0100", feof(fptr)); 52570af302Sopenharmony_ci fclose(fptr); 53570af302Sopenharmony_ci remove("/data/rewind_0100.txt"); 54570af302Sopenharmony_ci} 55570af302Sopenharmony_ci 56570af302Sopenharmony_ciint main(void) 57570af302Sopenharmony_ci{ 58570af302Sopenharmony_ci rewind_0100(); 59570af302Sopenharmony_ci return t_status; 60570af302Sopenharmony_ci} 61