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 <sys/stat.h>
17 #include <unistd.h>
18 #include "functionalext.h"
19
20 const int SUCCESS = 0;
21 const int FAILED = -1;
22 const int FILE_ZERO = 0;
23 const int FILE_FIRST = 10;
24 const int FILE_SECOND = 100;
25
26 /**
27 * @tc.name : ftruncate_0100
28 * @tc.desc : The parameter length is 0, which can clear the file content.
29 * @tc.level : Level 0
30 */
ftruncate_0100(void)31 void ftruncate_0100(void)
32 {
33 const char *ptr = "test.txt";
34 FILE *fptr = fopen(ptr, "w");
35 struct stat statbuff;
36 fprintf(fptr, "%s", "this is a sample!");
37 int freturn = ftruncate(fileno(fptr), 0);
38 EXPECT_EQ("ftruncate_0100", freturn, SUCCESS);
39 stat(ptr, &statbuff);
40 EXPECT_EQ("ftruncate_0100", statbuff.st_size, FILE_ZERO);
41 fclose(fptr);
42 remove(ptr);
43 fptr = NULL;
44 ptr = NULL;
45 }
46
47 /**
48 * @tc.name : ftruncate_0200
49 * @tc.desc : The parameter length is greater than 0 and less than the file size,
50 * which can clear the file content.
51 * @tc.level : Level 0
52 */
ftruncate_0200(void)53 void ftruncate_0200(void)
54 {
55 const char *ptr = "test.txt";
56 FILE *fptr = fopen(ptr, "w");
57 struct stat statbuff;
58 fprintf(fptr, "%s", "this is a sample!");
59 int freturn = ftruncate(fileno(fptr), 10);
60 EXPECT_EQ("ftruncate_0200", freturn, SUCCESS);
61 stat(ptr, &statbuff);
62 EXPECT_EQ("ftruncate_0200", (int)statbuff.st_size, FILE_FIRST);
63 fclose(fptr);
64 remove(ptr);
65 fptr = NULL;
66 ptr = NULL;
67 }
68
69 /**
70 * @tc.name : ftruncate_0300
71 * @tc.desc : The parameter length is greater than the file size,which can clear the file content.
72 * @tc.level : Level 0
73 */
ftruncate_0300(void)74 void ftruncate_0300(void)
75 {
76 const char *ptr = "test.txt";
77 FILE *fptr = fopen(ptr, "w");
78 struct stat statbuff;
79 fprintf(fptr, "%s", "this is a sample!");
80 int freturn = ftruncate(fileno(fptr), 100);
81 EXPECT_EQ("ftruncate_0300", freturn, SUCCESS);
82 stat(ptr, &statbuff);
83 EXPECT_EQ("ftruncate_0300", (int)statbuff.st_size, FILE_SECOND);
84 fclose(fptr);
85 remove(ptr);
86 fptr = NULL;
87 ptr = NULL;
88 }
89
90 /**
91 * @tc.name : ftruncate_0400
92 * @tc.desc : The fd parameter is invalid,the file content cannot be cleared.
93 * @tc.level : Level 2
94 */
ftruncate_0400(void)95 void ftruncate_0400(void)
96 {
97 const char *ptr = "test.txt";
98 FILE *fptr = fopen(ptr, "w");
99 fprintf(fptr, "%s", "this is a sample!");
100 fclose(fptr);
101 int freturn = ftruncate(fileno(fptr), 10);
102 EXPECT_EQ("ftruncate_0400", freturn, FAILED);
103 remove(ptr);
104 fptr = NULL;
105 ptr = NULL;
106 }
107
108 /**
109 * @tc.name : ftruncate_0500
110 * @tc.desc : The fd parameter is NULL,the file content cannot be cleared.
111 * @tc.level : Level 2
112 */
ftruncate_0500(void)113 void ftruncate_0500(void)
114 {
115 const char *ptr = "test.txt";
116 FILE *fptr = fopen(ptr, "w");
117 fprintf(fptr, "%s", "this is a sample!");
118 int freturn = ftruncate(0, 10);
119 EXPECT_EQ("ftruncate_0500", freturn, FAILED);
120 fclose(fptr);
121 remove(ptr);
122 fptr = NULL;
123 ptr = NULL;
124 }
125
main(int argc,char * argv[])126 int main(int argc, char *argv[])
127 {
128 ftruncate_0100();
129 ftruncate_0200();
130 ftruncate_0300();
131 ftruncate_0400();
132 ftruncate_0500();
133
134 return t_status;
135 }