rbfmt 0.0.2

Ruby code formatter
Documentation 
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use similar_asserts::assert_eq;
use std::{
    collections::HashSet,
    env,
    ffi::OsString,
    fs,
    path::{Path, PathBuf},
};

#[test]
fn system_tests() {
    let dirs = get_test_dirs(Path::new("tests"));

    let targets: HashSet<OsString> = match env::var("TEST") {
        Ok(files) => files.split(',').map(OsString::from).collect(),
        Err(_) => HashSet::new(),
    };

    for dir_path in dirs {
        if targets.is_empty() || targets.contains(dir_path.as_os_str()) {
            println!("test: {:?}", dir_path);
            compare_files(dir_path);
        }
    }
}

fn get_test_dirs(dir_path: &Path) -> Vec<PathBuf> {
    let mut dirs = vec![];
    let entries = fs::read_dir(dir_path).unwrap();
    for entry in entries {
        let path = entry.unwrap().path();
        dirs.push(path);
    }
    dirs
}

fn compare_files(dir_path: PathBuf) {
    let mut input_path = dir_path.clone();
    input_path.push("in.rb");
    let mut output_path = dir_path;
    output_path.push("out.rb");

    let input = fs::read(&input_path).unwrap();
    let want = fs::read_to_string(&output_path).unwrap();
    let config = crate::config::FormatConfig::default();
    match crate::format_source(input, config) {
        Ok(got) => assert_eq!(want, got, "{:?}", &input_path),
        Err(err) => unreachable!("test file could not be formatted: {:?}", err),
    }
}