1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <fcntl.h>
17 #include <stdio.h>
18 #include "test.h"
19
20 const char *path = "/data/readtest.txt";
21
22 /**
23 * @tc.name : getchar_0100
24 * @tc.desc : Verify that the characters in the file can be get
25 * @tc.level : Level 0
26 */
getchar_0100(void)27 void getchar_0100(void)
28 {
29 char str[] = "t";
30 int fd = open(path, O_RDWR | O_CREAT, TEST_MODE);
31 if (fd < 0) {
32 t_error("%s open failed\n", __func__);
33 }
34 ssize_t ret = write(fd, str, sizeof(str));
35 if (ret < 0) {
36 t_error("%s write failed\n", __func__);
37 }
38
39 FILE *fp = freopen(path, "r", stdin);
40 if (!fp) {
41 t_error("%s freopen failed\n", __func__);
42 }
43
44 char ch = getchar();
45 if (ch != 't') {
46 t_error("%s getchar failed\n", __func__);
47 }
48
49 close(fd);
50 remove(path);
51 }
52
main(int argc,char * argv[])53 int main(int argc, char *argv[])
54 {
55 getchar_0100();
56 return t_status;
57 }