rustlings/src/exercise.rs
2019-04-12 08:58:25 +01:00

72 lines
1.7 KiB
Rust

use std::fmt::{self, Display, Formatter};
use std::fs::{remove_file};
use std::path::{PathBuf};
use std::process::{self, Command, Output};
use serde::Deserialize;
const RUSTC_COLOR_ARGS: &[&str] = &["--color", "always"];
fn temp_file() -> String {
format!("./temp_{}", process::id())
}
#[derive(Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum Mode {
Compile,
Test,
}
#[derive(Deserialize)]
pub struct ExerciseList {
pub exercises: Vec<Exercise>,
}
#[derive(Deserialize)]
pub struct Exercise {
pub path: PathBuf,
pub mode: Mode,
}
impl Exercise {
pub fn compile(&self) -> Output {
match self.mode {
Mode::Compile => Command::new("rustc")
.args(&[self.path.to_str().unwrap(), "-o", &temp_file()])
.args(RUSTC_COLOR_ARGS)
.output(),
Mode::Test => Command::new("rustc")
.args(&["--test", self.path.to_str().unwrap(), "-o", &temp_file()])
.args(RUSTC_COLOR_ARGS)
.output(),
}
.expect("Failed to run 'compile' command.")
}
pub fn run(&self) -> Output {
Command::new(&temp_file())
.output()
.expect("Failed to run 'run' command")
}
pub fn clean(&self) {
let _ignored = remove_file(&temp_file());
}
}
impl Display for Exercise {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "{}", self.path.to_str().unwrap())
}
}
#[test]
fn test_clean() {
std::fs::File::create(&temp_file()).unwrap();
let exercise = Exercise {
path: PathBuf::from("example.rs"),
mode: Mode::Test,
};
exercise.clean();
assert!(!std::path::Path::new(&temp_file()).exists());
}