dravya/
error.rs

1//! Error types for dravya operations.
2
3use thiserror::Error;
4
5#[derive(Debug, Clone, Error)]
6#[non_exhaustive]
7pub enum DravyaError {
8    #[error("invalid material: {0}")]
9    InvalidMaterial(String),
10    #[error("invalid stress: {0}")]
11    InvalidStress(String),
12    #[error("invalid strain: {0}")]
13    InvalidStrain(String),
14    #[error("yield exceeded: {0}")]
15    YieldExceeded(String),
16    #[error("solver did not converge: {method} after {iterations} iterations")]
17    SolverNoConvergence {
18        method: &'static str,
19        iterations: usize,
20    },
21    #[error("division by zero: {0}")]
22    DivisionByZero(&'static str),
23    #[error("invalid parameter: {name} = {value} ({reason})")]
24    InvalidParameter {
25        name: &'static str,
26        value: f64,
27        reason: &'static str,
28    },
29}
30
31pub type Result<T> = std::result::Result<T, DravyaError>;
32
33#[cfg(test)]
34mod tests {
35    use super::*;
36
37    #[test]
38    fn error_display() {
39        let e = DravyaError::YieldExceeded("steel failed".into());
40        assert!(e.to_string().contains("steel failed"));
41    }
42
43    #[test]
44    fn division_by_zero_display() {
45        let e = DravyaError::DivisionByZero("zero modulus");
46        assert_eq!(e.to_string(), "division by zero: zero modulus");
47    }
48
49    #[test]
50    fn invalid_parameter_display() {
51        let e = DravyaError::InvalidParameter {
52            name: "poisson_ratio",
53            value: -2.0,
54            reason: "must be between -1 and 0.5",
55        };
56        assert!(e.to_string().contains("poisson_ratio"));
57        assert!(e.to_string().contains("-2"));
58    }
59
60    #[test]
61    fn solver_no_convergence_display() {
62        let e = DravyaError::SolverNoConvergence {
63            method: "newton_raphson",
64            iterations: 50,
65        };
66        assert!(e.to_string().contains("newton_raphson"));
67        assert!(e.to_string().contains("50"));
68    }
69
70    #[test]
71    fn error_is_clone() {
72        let e = DravyaError::SolverNoConvergence {
73            method: "test",
74            iterations: 10,
75        };
76        let e2 = e.clone();
77        assert_eq!(e.to_string(), e2.to_string());
78    }
79}
dravya/error.rs

dravya/
error.rs
