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use std::any::Any;
use std::fmt;
/// Error type returned when a panic occurs during execution.
pub struct ProgramPanic {
pub payload: Box<dyn Any + Send>,
}
impl fmt::Display for ProgramPanic {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if let Some(s) = self.payload.downcast_ref::<&str>() {
write!(f, "{s}")
} else if let Some(s) = self.payload.downcast_ref::<String>() {
write!(f, "{s}")
} else {
write!(f, "")
}
}
}
impl ProgramPanic {
#[must_use]
pub fn new(payload: Box<dyn Any + Send>) -> Self {
ProgramPanic { payload }
}
}
impl fmt::Debug for ProgramPanic {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{:?}", self.payload)
}
}
#[cfg(test)]
mod tests {
use crate::error::ChainProcessError;
use crate::error::ProgramPanic;
use crate::program::exec::error::ProgramExecuteError;
use crate::program::exec::error::ProgramInternalExecuteError;
// ProgramPanic
#[test]
fn test_program_panic_new_with_str() {
let panic = ProgramPanic::new(Box::new("hello world"));
assert_eq!(format!("{panic}"), "hello world");
}
#[test]
fn test_program_panic_new_with_string() {
let panic = ProgramPanic::new(Box::new("owned string".to_string()));
assert_eq!(format!("{panic}"), "owned string");
}
#[test]
fn test_program_panic_new_with_i32() {
let panic = ProgramPanic::new(Box::new(42));
assert_eq!(format!("{panic}"), "");
}
#[test]
fn test_program_panic_debug() {
let panic = ProgramPanic::new(Box::new("debug me"));
let debug = format!("{panic:?}");
assert_eq!(debug, "Any { .. }");
}
// ProgramExecuteError
#[test]
fn test_program_execute_error_display_dispatcher_not_found() {
let err = ProgramExecuteError::DispatcherNotFound;
assert_eq!(format!("{err}"), "No Dispatcher Found");
}
#[test]
fn test_program_execute_error_display_renderer_not_found() {
let err = ProgramExecuteError::RendererNotFound("markdown".into());
assert_eq!(format!("{err}"), "No Renderer (`markdown`) Found");
}
#[test]
fn test_program_execute_error_display_panic() {
let p = ProgramPanic::new(Box::new("oops"));
let err = ProgramExecuteError::Panic(p);
let display = format!("{err}");
assert!(display.starts_with("Panic: "));
}
#[test]
fn test_program_execute_error_display_other() {
let err = ProgramExecuteError::Other("something went wrong".into());
assert_eq!(format!("{err}"), "Other error: something went wrong");
}
#[test]
fn test_program_execute_error_error_trait_no_source() {
use std::error::Error;
let err = ProgramExecuteError::Other("msg".into());
assert!(err.source().is_none());
let err = ProgramExecuteError::DispatcherNotFound;
assert!(err.source().is_none());
let err = ProgramExecuteError::RendererNotFound("json".into());
assert!(err.source().is_none());
let panic = ProgramPanic::new(Box::new("panic"));
let err = ProgramExecuteError::Panic(panic);
assert!(err.source().is_none());
}
#[test]
fn test_from_program_panic_into_program_execute_error() {
let panic = ProgramPanic::new(Box::new("from panic"));
let err: ProgramExecuteError = panic.into();
assert!(matches!(err, ProgramExecuteError::Panic(_)));
}
// ProgramInternalExecuteError
#[test]
fn test_program_internal_execute_error_display_dispatcher_not_found() {
let err = ProgramInternalExecuteError::DispatcherNotFound;
assert_eq!(format!("{err}"), "No Dispatcher Found");
}
#[test]
fn test_program_internal_execute_error_display_renderer_not_found() {
let err = ProgramInternalExecuteError::RendererNotFound("html".into());
assert_eq!(format!("{err}"), "No Renderer (`html`) Found");
}
#[test]
fn test_program_internal_execute_error_display_other() {
let err = ProgramInternalExecuteError::Other("internal issue".into());
assert_eq!(format!("{err}"), "Other error: internal issue");
}
#[test]
fn test_program_internal_execute_error_display_io() {
let io_err = std::io::Error::new(std::io::ErrorKind::NotFound, "file missing");
let err = ProgramInternalExecuteError::IO(io_err);
let display = format!("{err}");
assert!(display.contains("IO error"));
assert!(display.contains("file missing"));
}
#[test]
fn test_program_internal_execute_error_display_repl_panic() {
let p = ProgramPanic::new(Box::new("repl crash"));
let err = ProgramInternalExecuteError::REPLPanic(p);
let display = format!("{err}");
assert!(display.starts_with("A single REPL execution failed: "));
assert!(display.contains("repl crash"));
}
#[test]
fn test_program_internal_execute_error_error_trait_source() {
use std::error::Error;
let io_err = std::io::Error::new(std::io::ErrorKind::PermissionDenied, "denied");
let err = ProgramInternalExecuteError::IO(io_err);
assert!(err.source().is_some());
let err = ProgramInternalExecuteError::DispatcherNotFound;
assert!(err.source().is_none());
let err = ProgramInternalExecuteError::RendererNotFound("txt".into());
assert!(err.source().is_none());
let err = ProgramInternalExecuteError::Other("msg".into());
assert!(err.source().is_none());
let p = ProgramPanic::new(Box::new("msg"));
let err = ProgramInternalExecuteError::REPLPanic(p);
assert!(err.source().is_none());
}
#[test]
fn test_from_io_error_into_program_internal_execute_error() {
let io_err = std::io::Error::new(std::io::ErrorKind::TimedOut, "timeout");
let err: ProgramInternalExecuteError = io_err.into();
assert!(matches!(err, ProgramInternalExecuteError::IO(_)));
}
// From<ProgramInternalExecuteError> for ProgramExecuteError
#[test]
fn test_from_internal_to_execute_dispatcher_not_found() {
let internal = ProgramInternalExecuteError::DispatcherNotFound;
let err: ProgramExecuteError = internal.into();
assert!(matches!(err, ProgramExecuteError::DispatcherNotFound));
}
#[test]
fn test_from_internal_to_execute_renderer_not_found() {
let internal = ProgramInternalExecuteError::RendererNotFound("yaml".into());
let err: ProgramExecuteError = internal.into();
assert!(matches!(err, ProgramExecuteError::RendererNotFound(_)));
assert_eq!(format!("{err}"), "No Renderer (`yaml`) Found");
}
#[test]
fn test_from_internal_to_execute_other() {
let internal = ProgramInternalExecuteError::Other("custom".into());
let err: ProgramExecuteError = internal.into();
assert!(matches!(err, ProgramExecuteError::Other(_)));
assert_eq!(format!("{err}"), "Other error: custom");
}
#[test]
fn test_from_internal_to_execute_io_becomes_other() {
let io_err = std::io::Error::new(std::io::ErrorKind::ConnectionRefused, "refused");
let internal = ProgramInternalExecuteError::IO(io_err);
let err: ProgramExecuteError = internal.into();
assert!(matches!(err, ProgramExecuteError::Other(_)));
let display = format!("{err}");
assert!(display.starts_with("Other error: "));
assert!(display.contains("refused"));
}
#[test]
fn test_from_internal_to_execute_repl_panic_becomes_other() {
let p = ProgramPanic::new(Box::new("panic in repl"));
let internal = ProgramInternalExecuteError::REPLPanic(p);
let err: ProgramExecuteError = internal.into();
assert!(matches!(err, ProgramExecuteError::Other(_)));
let display = format!("{err}");
assert!(display.contains("A single REPL execution failed"));
assert!(display.contains("panic in repl"));
}
// From<ChainProcessError> for ProgramInternalExecuteError
#[test]
fn test_from_chain_process_error_other_into_internal() {
let chain_err = ChainProcessError::Other("chain other".into());
let err: ProgramInternalExecuteError = chain_err.into();
assert!(matches!(err, ProgramInternalExecuteError::Other(_)));
assert_eq!(format!("{err}"), "Other error: chain other");
}
#[test]
fn test_from_chain_process_error_io_into_internal() {
let io_err = std::io::Error::new(std::io::ErrorKind::BrokenPipe, "broken");
let chain_err = ChainProcessError::IO(io_err);
let err: ProgramInternalExecuteError = chain_err.into();
assert!(matches!(err, ProgramInternalExecuteError::IO(_)));
let display = format!("{err}");
assert!(display.contains("IO error"));
assert!(display.contains("broken"));
}
}
|
