ironflow_store/
error.rs

1//! Storage error types.
2//!
3//! [`StoreError`] covers all failure modes for [`RunStore`](crate::store::RunStore)
4//! implementations, from missing records to invalid FSM transitions.
5
6use thiserror::Error;
7use uuid::Uuid;
8
9use crate::entities::RunStatus;
10
11/// Errors produced by [`RunStore`](crate::store::RunStore) operations.
12///
13/// # Examples
14///
15/// ```
16/// use ironflow_store::error::StoreError;
17/// use uuid::Uuid;
18///
19/// let err = StoreError::RunNotFound(Uuid::nil());
20/// assert!(err.to_string().contains("run not found"));
21/// ```
22#[derive(Debug, Error)]
23pub enum StoreError {
24    /// The requested run does not exist.
25    #[error("run not found: {0}")]
26    RunNotFound(Uuid),
27
28    /// The requested step does not exist.
29    #[error("step not found: {0}")]
30    StepNotFound(Uuid),
31
32    /// Attempted an illegal FSM transition.
33    #[error("invalid status transition: {from} -> {to}")]
34    InvalidTransition {
35        /// Current status.
36        from: RunStatus,
37        /// Attempted target status.
38        to: RunStatus,
39    },
40
41    /// Email is already taken by another user.
42    #[error("email already exists: {0}")]
43    DuplicateEmail(String),
44
45    /// Username is already taken by another user.
46    #[error("username already exists: {0}")]
47    DuplicateUsername(String),
48
49    /// The requested user does not exist.
50    #[error("user not found: {0}")]
51    UserNotFound(Uuid),
52
53    /// A database or I/O error from the backing store.
54    #[error("database error: {0}")]
55    Database(String),
56
57    /// JSON serialization or deserialization failed.
58    #[error("serialization error: {0}")]
59    Serialization(#[from] serde_json::Error),
60}
61
62#[cfg(test)]
63mod tests {
64    use super::*;
65
66    #[test]
67    fn run_not_found_display() {
68        let id = Uuid::nil();
69        let err = StoreError::RunNotFound(id);
70        assert_eq!(err.to_string(), format!("run not found: {id}"));
71    }
72
73    #[test]
74    fn step_not_found_display() {
75        let id = Uuid::nil();
76        let err = StoreError::StepNotFound(id);
77        assert_eq!(err.to_string(), format!("step not found: {id}"));
78    }
79
80    #[test]
81    fn invalid_transition_display() {
82        let err = StoreError::InvalidTransition {
83            from: RunStatus::Pending,
84            to: RunStatus::Completed,
85        };
86        assert!(err.to_string().contains("Pending"));
87        assert!(err.to_string().contains("Completed"));
88    }
89
90    #[test]
91    fn database_error_display() {
92        let err = StoreError::Database("connection refused".to_string());
93        assert!(err.to_string().contains("connection refused"));
94    }
95
96    #[test]
97    fn serialization_error_from_serde() {
98        let serde_err = serde_json::from_str::<String>("not json").unwrap_err();
99        let err = StoreError::from(serde_err);
100        assert!(err.to_string().contains("serialization error"));
101    }
102}
ironflow_store/error.rs

ironflow_store/
error.rs
