1 /* Decode a message using oneof fields */
2
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <string.h>
6 #include <pb_decode.h>
7 #include "oneof.pb.h"
8 #include "test_helpers.h"
9 #include "unittests.h"
10
11 /* Test the 'OneOfMessage' */
test_oneof_1(pb_istream_t * stream,int option)12 int test_oneof_1(pb_istream_t *stream, int option)
13 {
14 OneOfMessage msg;
15 int status = 0;
16
17 /* To better catch initialization errors */
18 memset(&msg, 0xAA, sizeof(msg));
19
20 if (!pb_decode(stream, OneOfMessage_fields, &msg))
21 {
22 printf("Decoding failed: %s\n", PB_GET_ERROR(stream));
23 return 1;
24 }
25
26 /* Check that the basic fields work normally */
27 TEST(msg.prefix == 123);
28 TEST(msg.suffix == 321);
29
30 /* Check that we got the right oneof according to command line */
31 if (option == 1)
32 {
33 TEST(msg.which_values == OneOfMessage_first_tag);
34 TEST(msg.values.first == 999);
35 }
36 else if (option == 2)
37 {
38 TEST(msg.which_values == OneOfMessage_second_tag);
39 TEST(strcmp(msg.values.second, "abcd") == 0);
40 }
41 else if (option == 3)
42 {
43 TEST(msg.which_values == OneOfMessage_third_tag);
44 TEST(msg.values.third.array[0] == 1);
45 TEST(msg.values.third.array[1] == 2);
46 TEST(msg.values.third.array[2] == 3);
47 TEST(msg.values.third.array[3] == 4);
48 TEST(msg.values.third.array[4] == 5);
49 }
50
51 return status;
52 }
53
54
55 /* Test the 'PlainOneOfMessage' */
test_oneof_2(pb_istream_t * stream,int option)56 int test_oneof_2(pb_istream_t *stream, int option)
57 {
58 PlainOneOfMessage msg = PlainOneOfMessage_init_zero;
59 int status = 0;
60
61 if (!pb_decode(stream, PlainOneOfMessage_fields, &msg))
62 {
63 printf("Decoding failed: %s\n", PB_GET_ERROR(stream));
64 return 1;
65 }
66
67 /* Check that we got the right oneof according to command line */
68 if (option == 1)
69 {
70 TEST(msg.which_values == OneOfMessage_first_tag);
71 TEST(msg.values.first == 999);
72 }
73 else if (option == 2)
74 {
75 TEST(msg.which_values == OneOfMessage_second_tag);
76 TEST(strcmp(msg.values.second, "abcd") == 0);
77 }
78 else if (option == 3)
79 {
80 TEST(msg.which_values == OneOfMessage_third_tag);
81 TEST(msg.values.third.array[0] == 1);
82 TEST(msg.values.third.array[1] == 2);
83 TEST(msg.values.third.array[2] == 3);
84 TEST(msg.values.third.array[3] == 4);
85 TEST(msg.values.third.array[4] == 5);
86 }
87
88 return status;
89 }
90
main(int argc,char ** argv)91 int main(int argc, char **argv)
92 {
93 uint8_t buffer[OneOfMessage_size];
94 size_t count;
95 int option;
96
97 if (argc != 2)
98 {
99 fprintf(stderr, "Usage: decode_oneof [number]\n");
100 return 1;
101 }
102 option = atoi(argv[1]);
103
104 SET_BINARY_MODE(stdin);
105 count = fread(buffer, 1, sizeof(buffer), stdin);
106
107 if (!feof(stdin))
108 {
109 printf("Message does not fit in buffer\n");
110 return 1;
111 }
112
113 {
114 int status = 0;
115 pb_istream_t stream;
116
117 stream = pb_istream_from_buffer(buffer, count);
118 status = test_oneof_1(&stream, option);
119
120 if (status != 0)
121 return status;
122
123 stream = pb_istream_from_buffer(buffer, count);
124 status = test_oneof_2(&stream, option);
125
126 if (status != 0)
127 return status;
128 }
129
130 return 0;
131 }
132