uconsole_sleep/
error.rs

1//! Error handling - pure Rust implementation
2//! No external dependencies
3
4use std::fmt;
5use std::io;
6
7/// Custom error type
8#[derive(Debug, Clone)]
9pub enum Error {
10    /// IO error with message
11    Io(String),
12    /// Device not found
13    NotFound(String),
14    /// Invalid path or device
15    InvalidDevice(String),
16    /// Permission denied
17    PermissionDenied(String),
18}
19
20impl fmt::Display for Error {
21    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
22        match self {
23            Error::Io(msg) => write!(f, "IO error: {}", msg),
24            Error::NotFound(msg) => write!(f, "Not found: {}", msg),
25            Error::InvalidDevice(msg) => write!(f, "Invalid device: {}", msg),
26            Error::PermissionDenied(msg) => write!(f, "Permission denied: {}", msg),
27        }
28    }
29}
30
31impl From<io::Error> for Error {
32    fn from(err: io::Error) -> Self {
33        Error::Io(err.to_string())
34    }
35}
36
37#[cfg(test)]
38mod tests {
39    use super::*;
40
41    #[test]
42    fn test_error_display_io() {
43        let err = Error::Io("test error".to_string());
44        assert_eq!(err.to_string(), "IO error: test error");
45    }
46
47    #[test]
48    fn test_error_display_not_found() {
49        let err = Error::NotFound("device".to_string());
50        assert_eq!(err.to_string(), "Not found: device");
51    }
52
53    #[test]
54    fn test_error_display_invalid_device() {
55        let err = Error::InvalidDevice("bad device".to_string());
56        assert_eq!(err.to_string(), "Invalid device: bad device");
57    }
58
59    #[test]
60    fn test_error_display_permission_denied() {
61        let err = Error::PermissionDenied("access denied".to_string());
62        assert_eq!(err.to_string(), "Permission denied: access denied");
63    }
64
65    #[test]
66    fn test_error_clone() {
67        let err = Error::NotFound("test".to_string());
68        let cloned = err.clone();
69        assert_eq!(err.to_string(), cloned.to_string());
70    }
71
72    #[test]
73    fn test_error_debug() {
74        let err = Error::NotFound("test".to_string());
75        let debug_str = format!("{:?}", err);
76        assert!(debug_str.contains("NotFound"));
77    }
78}
uconsole_sleep/error.rs

uconsole_sleep/
error.rs
