libmodbus-rs 0.8.3

libmodbus bindings for Rust
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191

extern crate libmodbus_rs;

use libmodbus_rs::{Modbus, Timeout, ModbusTCP};


#[test]
fn connect() {
    // create server
    match Modbus::new_tcp("127.0.0.1", 1502) {
            Ok(mut server) => server.tcp_listen(1),
            Err(err) => panic!("Could not create server: {}", err),
        }
        .unwrap();

    // connect client
    match Modbus::new_tcp("127.0.0.1", 1502) {
        Ok(modbus) => assert!(modbus.connect().is_ok()),
        _ => panic!("could not connect"),
    }
}

#[test]
fn flush() {
    let modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert!(modbus.flush().is_ok());
}

#[test]
fn set_slave() {
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert!(modbus.set_slave(0).is_ok());
    assert!(modbus.set_slave(1).is_ok());
    // FIXME: rust silent overflow, allows invalid slave ID
    // assert!(modbus.set_slave(266).is_ok());
}

#[test]
fn set_debug() {
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert!(modbus.set_debug(true).is_ok());
}

#[test]
fn get_byte_timeout() {
    let modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert_eq!(modbus.get_byte_timeout().unwrap(),
               libmodbus_rs::Timeout {
                   sec: 0,
                   usec: 500000,
               });
}

#[test]
fn set_byte_timeout() {
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert_eq!(modbus.get_byte_timeout().unwrap(),
               Timeout {
                   sec: 0,
                   usec: 500000,
               });

    let timeout = Timeout {
        sec: 1,
        usec: 500000,
    };
    assert!(modbus.set_byte_timeout(timeout).is_ok());
    assert_eq!(modbus.get_byte_timeout().unwrap(),
               Timeout {
                   sec: 1,
                   usec: 500000,
               });
}

#[test]
fn get_response_timeout() {
    let modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert_eq!(modbus.get_response_timeout().unwrap(),
               Timeout {
                   sec: 0,
                   usec: 500000,
               });
}

#[test]
fn set_response_timeout() {
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert_eq!(modbus.get_response_timeout().unwrap(),
               Timeout {
                   sec: 0,
                   usec: 500000,
               });

    let timeout = Timeout {
        sec: 1,
        usec: 500000,
    };
    assert!(modbus.set_response_timeout(timeout).is_ok());
    assert_eq!(modbus.get_response_timeout().unwrap(),
               Timeout {
                   sec: 1,
                   usec: 500000,
               });
}

#[test]
fn set_error_recovery() {
    use libmodbus_rs::ErrorRecoveryMode;
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();

    assert!(modbus.set_error_recovery(None).is_ok());
    assert!(modbus.set_error_recovery(Some(&[ErrorRecoveryMode::Link])).is_ok());
    assert!(modbus.set_error_recovery(Some(&[ErrorRecoveryMode::Protocol])).is_ok());
    assert!(modbus.set_error_recovery(Some(&[ErrorRecoveryMode::Link, ErrorRecoveryMode::Protocol])).is_ok());
}

#[test]
fn set_socket() {
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert!(modbus.set_socket(1337).is_ok());
}

#[test]
fn get_socket() {
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    modbus.set_socket(1337).expect("could not set socket");
    assert_eq!(modbus.get_socket().unwrap(), 1337);
}

#[test]
fn get_header_length() {
    let modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    assert_eq!(modbus.get_header_length(), 7);
}


#[test]
#[ignore]
fn reply_exception() {
    // create server
    match Modbus::new_tcp("127.0.0.1", 1502) {
            Ok(mut server) => server.tcp_listen(1),
            Err(err) => panic!("Could not create server: {}", err),
        }
        .unwrap();

    // connect client
    match Modbus::new_tcp("127.0.0.1", 1502) {
        Ok(modbus) => assert!(modbus.connect().is_ok()),
        _ => panic!("could not connect"),
    }
}


#[test]
#[ignore]
fn close() {
    let modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    modbus.close();
}

#[test]
#[ignore]
fn free() {
    let mut modbus = Modbus::new_tcp("127.0.0.1", 1502).unwrap();
    modbus.free();
}

// Timeout tests
#[test]
fn timeout_default() {
    let timeout: Timeout = Default::default();
    assert_eq!(timeout, Timeout { sec: 0, usec: 0});
}

#[test]
fn timeout_new() {
    let timeout = Timeout::new(1, 2);
    assert_eq!(timeout, Timeout { sec: 1, usec: 2});
}

#[test]
fn timeout_new_sec() {
    let timeout = Timeout::new_sec(1);
    assert_eq!(timeout, Timeout { sec: 1, usec: 0});
}

#[test]
fn timeout_new_usec() {
    let timeout = Timeout::new_usec(2);
    assert_eq!(timeout, Timeout { sec: 0, usec: 2});
}