86 lines
2.3 KiB
Rust
86 lines
2.3 KiB
Rust
// TODO: Implement the `Error` trait for `TicketNewError` using `thiserror`.
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// We've changed the enum variants to be more specific, thus removing the need for storing
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// a `String` field into each variant.
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// You'll also have to add `thiserror` as a dependency in the `Cargo.toml` file.
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enum TicketNewError {
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TitleCannotBeEmpty,
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TitleTooLong,
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DescriptionCannotBeEmpty,
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DescriptionTooLong,
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}
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#[derive(Debug, PartialEq, Clone)]
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struct Ticket {
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title: String,
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description: String,
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status: Status,
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}
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#[derive(Debug, PartialEq, Clone)]
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enum Status {
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ToDo,
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InProgress { assigned_to: String },
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Done,
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}
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impl Ticket {
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pub fn new(
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title: String,
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description: String,
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status: Status,
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) -> Result<Ticket, TicketNewError> {
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if title.is_empty() {
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return Err(TicketNewError::TitleCannotBeEmpty);
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}
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if title.len() > 50 {
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return Err(TicketNewError::TitleTooLong);
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}
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if description.is_empty() {
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return Err(TicketNewError::DescriptionCannotBeEmpty);
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}
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if description.len() > 500 {
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return Err(TicketNewError::DescriptionTooLong);
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}
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Ok(Ticket {
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title,
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description,
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status,
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})
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use common::{overly_long_description, overly_long_title, valid_description, valid_title};
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#[test]
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fn title_cannot_be_empty() {
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let err = Ticket::new("".into(), valid_description(), Status::ToDo).unwrap_err();
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assert_eq!(err.to_string(), "Title cannot be empty");
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}
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#[test]
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fn description_cannot_be_empty() {
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let err = Ticket::new(valid_title(), "".into(), Status::ToDo).unwrap_err();
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assert_eq!(err.to_string(), "Description cannot be empty");
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}
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#[test]
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fn title_cannot_be_longer_than_fifty_chars() {
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let err = Ticket::new(overly_long_title(), valid_description(), Status::ToDo).unwrap_err();
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assert_eq!(err.to_string(), "Title cannot be longer than 50 bytes");
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}
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#[test]
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fn description_cannot_be_too_long() {
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let err = Ticket::new(valid_title(), overly_long_description(), Status::ToDo).unwrap_err();
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assert_eq!(
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err.to_string(),
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"Description cannot be longer than 500 bytes"
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);
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}
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}
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