comandare 0.3.0

TCP Command Execution
Documentation 
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

use std::io::Write;
use std::sync::{Arc, Mutex};

type LogStream = Arc<Mutex<dyn Write + Send>>;

pub trait Loggable {
    fn out(&mut self, message: String);
    fn err(&mut self, message: String);
}

pub struct Logger {
    debug: bool,
    stdout: LogStream,
    stderr: LogStream,
}

impl Logger {
    pub fn new(debug: bool, stdout: LogStream, stderr: LogStream) -> Self {
        Logger {
            debug,
            stdout,
            stderr,
        }
    }
}

impl Loggable for Logger {
    fn out(&mut self, message: String) {
        if self.debug {
            let mut stdout = self.stdout.lock().unwrap();
            stdout.write_all(message.as_bytes()).unwrap();
            stdout.flush().unwrap();
        }
    }

    fn err(&mut self, message: String) {
        let mut stderr = self.stderr.lock().unwrap();
        stderr.write_all(message.as_bytes()).unwrap();
        stderr.flush().unwrap();
    }
}

impl Clone for Logger {
    fn clone(&self) -> Self {
        Logger {
            debug: self.debug,
            stdout: self.stdout.clone(),
            stderr: self.stderr.clone(),
        }
    }
}


#[cfg(test)]
mod tests {
    use super::*;
    use mockall::mock;
    use mockall::predicate;
    use std::io::Result;

    mock!{
        Stdout {}
        trait Write{
            fn write(&mut self, buf: &[u8]) -> Result<usize>;
            fn write_all(&mut self, mut buf: &[u8]) -> Result<()>;
            fn flush(&mut self) -> Result<()>;
        }
    }

    mock!{
        Stderr {}
        trait Write{
            fn write(&mut self, buf: &[u8]) -> Result<usize>;
            fn write_all(&mut self, mut buf: &[u8]) -> Result<()>;
            fn flush(&mut self) -> Result<()>;
        }
    }

    #[test]
    fn logs_out() {
        let value = "info";
        let argument = format!("{}", value.clone());

        let mut stdout_mock = MockStdout::new();
        stdout_mock.expect_write_all()
            .with(predicate::eq(value.clone().as_bytes()))
            .times(1)
            .returning(|_| Ok(()));
        stdout_mock.expect_flush()
            .times(1)
            .returning(|| Ok(()));

        let mut stderr_mock = MockStderr::new();
        stderr_mock.expect_write_all()
            .never();
        stderr_mock.expect_flush()
            .never();

        let mut logger = Logger::new(
            true,
            Arc::new(Mutex::new(stdout_mock)),
            Arc::new(Mutex::new(stderr_mock))
        );
        logger.out(argument);
    }

    #[test]
    fn logs_err() {
        let value = "error";
        let argument = format!("{}", value.clone());

        let mut stdout_mock = MockStdout::new();
        stdout_mock.expect_write_all()
            .never();
        stdout_mock.expect_flush()
            .never();

        let mut stderr_mock = MockStderr::new();
        stderr_mock.expect_write_all()
            .with(predicate::eq(value.clone().as_bytes()))
            .times(1)
            .returning(|_| Ok(()));
        stderr_mock.expect_flush()
            .times(1)
            .returning(|| Ok(()));

        let mut logger = Logger::new(
            true,
            Arc::new(Mutex::new(stdout_mock)),
            Arc::new(Mutex::new(stderr_mock))
        );
        logger.err(argument.clone());
    }
}