frp_engine/
error.rs

1//! Error types for the frp-engine crate.
2
3use frp_plexus::{BlockId, EdgeId, PortId};
4use thiserror::Error;
5
6#[derive(Debug, Error)]
7pub enum EngineError {
8    #[error("cycle detected in edge graph")]
9    CycleDetected,
10
11    #[error("transform not found: '{0}'")]
12    TransformNotFound(String),
13
14    #[error("execution failed: {0}")]
15    ExecutionFailed(String),
16
17    #[error("port not found: {0:?}")]
18    PortNotFound(PortId),
19
20    #[error("block not found: {0:?}")]
21    BlockNotFound(BlockId),
22
23    #[error("edge not found: {0:?}")]
24    EdgeNotFound(EdgeId),
25
26    #[error("validation failed: {0}")]
27    ValidationFailed(String),
28}
29
30#[cfg(test)]
31mod tests {
32    use super::*;
33
34    #[test]
35    fn cycle_detected_display() {
36        let e = EngineError::CycleDetected;
37        assert_eq!(e.to_string(), "cycle detected in edge graph");
38    }
39
40    #[test]
41    fn transform_not_found_display() {
42        let e = EngineError::TransformNotFound("my_fn".to_string());
43        assert_eq!(e.to_string(), "transform not found: 'my_fn'");
44    }
45
46    #[test]
47    fn port_not_found_display() {
48        let e = EngineError::PortNotFound(PortId::new(7));
49        assert!(e.to_string().contains("7"));
50    }
51}
frp_engine/error.rs

frp_engine/
error.rs
