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use super::Status;
/// A roadmap step.
///
/// See the crate documentation for an example. You
/// probably don't want to create steps manually, but via the roadmap
/// YAML parsing function.
#[derive(Clone, Debug, PartialEq)]
pub struct Step {
name: String,
status: Status,
label: String,
depends: Vec<String>,
}
impl Step {
/// Create a new step with a name and a label.
pub fn new(name: &str, label: &str) -> Step {
Step {
name: name.to_string(),
status: Status::Unknown,
label: label.to_string(),
depends: vec![],
}
}
/// Return the name of a step.
pub fn name<'a>(&'a self) -> &'a str {
&self.name
}
/// Return the label of a step.
pub fn label<'a>(&'a self) -> &'a str {
&self.label
}
/// Return the status of a step.
pub fn status<'a>(&'a self) -> Status {
self.status
}
/// Set the status of a step.
pub fn set_status(&mut self, status: Status) {
self.status = status
}
/// Return vector of names of dependencies for a step.
pub fn dependencies(&self) -> impl Iterator<Item = &String> {
self.depends.iter()
}
/// Add the name of a dependency to step. Steps are referred by
/// name. Steps don't know about other steps, and can't validate
/// that the dependency exists, so this always works.
pub fn add_dependency(&mut self, name: &str) {
self.depends.push(String::from(name));
}
/// Does this step depend on given other step?
pub fn depends_on(&self, other_name: &str) -> bool {
self.depends.iter().any(|depname| depname == other_name)
}
}
#[cfg(test)]
mod tests {
use super::{Status, Step};
#[test]
fn new_step() {
let step = Step::new("myname", "my label");
assert_eq!(step.name(), "myname");
assert_eq!(step.status(), Status::Unknown);
assert_eq!(step.label(), "my label");
assert_eq!(step.dependencies().count(), 0);
}
#[test]
fn set_status() {
let mut step = Step::new("myname", "my label");
step.set_status(Status::Next);
assert_eq!(step.status(), Status::Next);
}
#[test]
fn add_step_dependency() {
let mut second = Step::new("second", "the second step");
second.add_dependency("first");
let deps: Vec<&String> = second.dependencies().collect();
assert_eq!(deps, vec!["first"]);
}
}
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