max / audiofiles

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1	//! Typed errors for the browser crate, replacing `Result<_, String>`.
2
3	use std::path::PathBuf;
4	use thiserror::Error;
5
6	/// Errors from audio preview decoding.
7	#[derive(Error, Debug)]
8	pub enum PreviewError {
9	#[error("failed to open {path}: {source}")]
10	Open {
11	path: PathBuf,
12	source: std::io::Error,
13	},
14	#[error("failed to probe format: {0}")]
15	Probe(String),
16	#[error("no audio track found")]
17	NoTrack,
18	#[error("failed to create decoder: {0}")]
19	Decoder(String),
20	#[error("packet read error: {0}")]
21	Packet(String),
22	#[error("decode error: {0}")]
23	Decode(String),
24	#[error("no audio data decoded")]
25	NoData,
26	}
27
28	/// Errors from theme file loading.
29	#[derive(Error, Debug)]
30	pub enum ThemeError {
31	#[error("failed to read {path}: {source}")]
32	Read {
33	path: PathBuf,
34	source: std::io::Error,
35	},
36	#[error("failed to parse {path}: {source}")]
37	Parse {
38	path: PathBuf,
39	source: toml::de::Error,
40	},
41	}
42
43	#[cfg(test)]
44	mod tests {
45	use super::*;
46
47	#[test]
48	fn preview_error_display() {
49	let err = PreviewError::NoTrack;
50	assert_eq!(err.to_string(), "no audio track found");
51	}
52
53	#[test]
54	fn preview_error_open_includes_path() {
55	let err = PreviewError::Open {
56	path: PathBuf::from("/tmp/test.wav"),
57	source: std::io::Error::new(std::io::ErrorKind::NotFound, "not found"),
58	};
59	let msg = err.to_string();
60	assert!(msg.contains("/tmp/test.wav"));
61	assert!(msg.contains("not found"));
62	}
63
64	#[test]
65	fn theme_error_display() {
66	let err = ThemeError::Read {
67	path: PathBuf::from("theme.toml"),
68	source: std::io::Error::new(std::io::ErrorKind::NotFound, "missing"),
69	};
70	assert!(err.to_string().contains("theme.toml"));
71	}
72
73	#[test]
74	fn preview_error_variants_exhaustive() {
75	// Verify all variants construct without panic
76	let _ = PreviewError::Open {
77	path: PathBuf::new(),
78	source: std::io::Error::other(""),
79	};
80	let _ = PreviewError::Probe("test".into());
81	let _ = PreviewError::NoTrack;
82	let _ = PreviewError::Decoder("test".into());
83	let _ = PreviewError::Packet("test".into());
84	let _ = PreviewError::Decode("test".into());
85	let _ = PreviewError::NoData;
86	}
87	}
88