77 lines
2.3 KiB
Rust
77 lines
2.3 KiB
Rust
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use crate::status::Status;
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// We've seen how to declare modules in one of the earliest exercises, but
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// we haven't seen how to extract them into separate files.
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// Let's fix that now!
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//
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// In the simplest case, when the extracted module is a single file, it is enough to
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// create a new file with the same name as the module and move the module content there.
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// The module file should be placed in the same directory as the file that declares the module.
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// In this case, `src/lib.rs`, thus `status.rs` should be placed in the `src` directory.
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mod status;
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// TODO: Add a new error variant to `TicketNewError` for when the status string is invalid.
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// When calling `source` on an error of that variant, it should return a `ParseStatusError` rather than `None`.
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#[derive(Debug, thiserror::Error)]
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pub enum TicketNewError {
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#[error("Title cannot be empty")]
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TitleCannotBeEmpty,
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#[error("Title cannot be longer than 50 characters")]
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TitleTooLong,
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#[error("Description cannot be empty")]
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DescriptionCannotBeEmpty,
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#[error("Description cannot be longer than 500 characters")]
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DescriptionTooLong,
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}
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#[derive(Debug, PartialEq, Clone)]
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pub 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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impl Ticket {
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pub fn new(title: String, description: String, status: String) -> Result<Self, 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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// TODO: Parse the status string into a `Status` enum.
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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 common::{valid_description, valid_title};
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use std::error::Error;
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use super::*;
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#[test]
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fn invalid_status() {
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let err = Ticket::new(valid_title(), valid_description(), "invalid".into()).unwrap_err();
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assert_eq!(
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err.to_string(),
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"`invalid` is not a valid status. Use one of: ToDo, InProgress, Done"
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);
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assert!(err.source().is_some());
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}
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}
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