girt 0.4.3

An incremental, idiomatic Rust implementation of Git
Documentation 
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//! Original fixtures generated solely through the Git executable.
use std::io::Write;
use std::path::Path;
use std::process::{Command, Stdio};
pub fn git(directory: &Path, args: &[&str], input: &[u8]) -> Vec<u8> {
    let output = attempt(directory, args, input);
    assert!(
        output.status.success(),
        "git {args:?}: {}",
        String::from_utf8_lossy(&output.stderr)
    );
    output.stdout
}

pub fn attempt(directory: &Path, args: &[&str], input: &[u8]) -> std::process::Output {
    let mut command = Command::new("git");
    for (key, _) in std::env::vars_os() {
        if key.to_string_lossy().starts_with("GIT_") {
            command.env_remove(key);
        }
    }

    let mut child = command
        .current_dir(directory)
        .env("GIT_CONFIG_NOSYSTEM", "1")
        .env("GIT_CONFIG_GLOBAL", directory.join("absent-config"))
        .env("GIT_AUTHOR_NAME", "A. Writer")
        .env("GIT_AUTHOR_EMAIL", "author@example.com")
        .env("GIT_AUTHOR_DATE", "@1700000000 +0530")
        .env("GIT_COMMITTER_NAME", "C. Recorder")
        .env("GIT_COMMITTER_EMAIL", "committer@example.com")
        .env("GIT_COMMITTER_DATE", "@1700000123 -0700")
        .args(args)
        .stdin(Stdio::piped())
        .stdout(Stdio::piped())
        .stderr(Stdio::piped())
        .spawn()
        .expect("Git is required for interoperability tests");

    child.stdin.take().unwrap().write_all(input).unwrap();
    child.wait_with_output().unwrap()
}