1 extern crate podio;
2
3 use std::io;
4 use podio::{LittleEndian, BigEndian};
5 use podio::{ReadPodExt, WritePodExt};
6
7 #[test]
write_be()8 fn write_be() {
9 let buf: &mut [u8] = &mut [0u8; 8];
10 let mut writer = io::Cursor::new(buf);
11
12 writer.set_position(0);
13 writer.write_u64::<BigEndian>(0x01_23_45_67_89_ab_cd_ef).unwrap();
14 assert_eq!(&writer.get_ref()[0..8], &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef]);
15
16 writer.set_position(0);
17 writer.write_u32::<BigEndian>(0x01_23_45_67).unwrap();
18 assert_eq!(&writer.get_ref()[0..4], &[0x01, 0x23, 0x45, 0x67]);
19
20 writer.set_position(0);
21 writer.write_u16::<BigEndian>(0x01_23).unwrap();
22 assert_eq!(&writer.get_ref()[0..2], &[0x01, 0x23]);
23 }
24
25 #[test]
write_le()26 fn write_le() {
27 let buf: &mut [u8] = &mut [0u8; 8];
28 let mut writer = io::Cursor::new(buf);
29
30 writer.set_position(0);
31 writer.write_u64::<LittleEndian>(0x01_23_45_67_89_ab_cd_ef).unwrap();
32 assert_eq!(&writer.get_ref()[0..8], &[0xef, 0xcd, 0xab, 0x89, 0x67, 0x45, 0x23, 0x01]);
33
34 writer.set_position(0);
35 writer.write_u32::<LittleEndian>(0x01_23_45_67).unwrap();
36 assert_eq!(&writer.get_ref()[0..4], &[0x67, 0x45, 0x23, 0x01]);
37
38 writer.set_position(0);
39 writer.write_u16::<LittleEndian>(0x01_23).unwrap();
40 assert_eq!(&writer.get_ref()[0..2], &[0x23, 0x01]);
41 }
42
43 #[test]
write_octet()44 fn write_octet() {
45 let buf: &mut [u8] = &mut [0u8; 8];
46 let mut writer = io::Cursor::new(buf);
47
48 writer.set_position(0);
49 writer.write_u8(0x01).unwrap();
50 assert_eq!(&writer.get_ref()[0..1], &[0x01]);
51 }
52
53 #[test]
write_float()54 fn write_float() {
55 let buf: &mut [u8] = &mut [0u8; 8];
56 let mut writer = io::Cursor::new(buf);
57
58 writer.set_position(0);
59 writer.write_f32::<LittleEndian>(10.12f32).unwrap();
60 assert_eq!(&writer.get_ref()[0..4], &[0x85, 0xEB, 0x21, 0x41]);
61
62 writer.set_position(0);
63 writer.write_f32::<BigEndian>(10.12f32).unwrap();
64 assert_eq!(&writer.get_ref()[0..4], &[0x41, 0x21, 0xEB, 0x85]);
65
66 writer.set_position(0);
67 writer.write_f64::<LittleEndian>(10.12f64).unwrap();
68 assert_eq!(&writer.get_ref()[0..8], &[0x3D, 0x0A, 0xD7, 0xA3, 0x70, 0x3D, 0x24, 0x40]);
69
70 writer.set_position(0);
71 writer.write_f64::<BigEndian>(10.12f64).unwrap();
72 assert_eq!(&writer.get_ref()[0..8], &[0x40, 0x24, 0x3D, 0x70, 0xA3, 0xD7, 0x0A, 0x3D]);
73 }
74
75 #[test]
read_be()76 fn read_be() {
77 let buf: &[u8] = &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
78 let mut reader = io::Cursor::new(buf);
79
80 reader.set_position(0);
81 assert_eq!(reader.read_u64::<BigEndian>().unwrap(), 0x0123456789abcdef);
82
83 reader.set_position(0);
84 assert_eq!(reader.read_u32::<BigEndian>().unwrap(), 0x01234567);
85
86 reader.set_position(0);
87 assert_eq!(reader.read_u16::<BigEndian>().unwrap(), 0x0123);
88 }
89
90 #[test]
read_le()91 fn read_le() {
92 let buf: &[u8] = &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
93 let mut reader = io::Cursor::new(buf);
94
95 reader.set_position(0);
96 assert_eq!(reader.read_u64::<LittleEndian>().unwrap(), 0xefcdab8967452301);
97
98 reader.set_position(0);
99 assert_eq!(reader.read_u32::<LittleEndian>().unwrap(), 0x67452301);
100
101 reader.set_position(0);
102 assert_eq!(reader.read_u16::<LittleEndian>().unwrap(), 0x2301);
103 }
104
105 #[test]
read_octet()106 fn read_octet() {
107 let buf: &[u8] = &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
108 let mut reader = io::Cursor::new(buf);
109
110 reader.set_position(0);
111 assert_eq!(reader.read_u8().unwrap(), 0x01);
112 }
113
114 #[test]
read_float()115 fn read_float() {
116 let mut buf: &[u8] = &[0x41, 0x21, 0xEB, 0x85];
117 assert_eq!(buf.read_f32::<BigEndian>().unwrap(), 10.12f32);
118
119 let mut buf: &[u8] = &[0x85, 0xEB, 0x21, 0x41];
120 assert_eq!(buf.read_f32::<LittleEndian>().unwrap(), 10.12f32);
121
122 let mut buf: &[u8] = &[0x40, 0x24, 0x3D, 0x70, 0xA3, 0xD7, 0x0A, 0x3D];
123 assert_eq!(buf.read_f64::<BigEndian>().unwrap(), 10.12f64);
124
125 let mut buf: &[u8] = &[0x3D, 0x0A, 0xD7, 0xA3, 0x70, 0x3D, 0x24, 0x40];
126 assert_eq!(buf.read_f64::<LittleEndian>().unwrap(), 10.12f64);
127 }
128
129 #[test]
read_exact()130 fn read_exact() {
131 let mut buf: &[u8] = &[1, 2, 3, 4, 5, 6, 7, 8];
132 assert_eq!(buf.read_exact(2).unwrap(), [1,2]);
133 assert_eq!(buf.read_exact(1).unwrap(), [3]);
134 assert_eq!(buf.read_exact(0).unwrap(), []);
135 assert_eq!(buf.read_exact(5).unwrap(), [4,5,6,7,8]);
136 assert_eq!(buf.read_exact(0).unwrap(), []);
137 assert!(buf.read_exact(1).is_err());
138 assert_eq!(buf.read_exact(0).unwrap(), []);
139 }
140