msy 0.4.2

Modern musl rsync alternative - Fast, parallel file synchronization
Documentation 
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#[cfg(test)]
mod tests {
    use std::fs;
    use msy::path::SyncPath;
    use msy::sync::server_mode::{sync_pull, sync_push};
    use tempfile::TempDir;

    #[tokio::test]
    async fn test_server_mode_push_local() -> anyhow::Result<()> {
        let temp = TempDir::new()?;
        let source = temp.path().join("src");
        let dest = temp.path().join("dest");

        fs::create_dir(&source)?;
        fs::create_dir(&dest)?;

        // Create source files
        fs::write(source.join("file1.txt"), "Hello World")?;
        fs::write(source.join("file2.txt"), "Another file")?;
        fs::create_dir(source.join("subdir"))?;
        fs::write(source.join("subdir/file3.txt"), "Nested file")?;

        // Find sy binary
        let sy_bin = std::env::current_exe()?
            .parent()
            .unwrap()
            .parent()
            .unwrap()
            .parent()
            .unwrap()
            .join("sy");

        if !sy_bin.exists() {
            eprintln!("Skipping test: sy binary not found at {}", sy_bin.display());
            return Ok(());
        }

        // Update PATH to include sy binary dir
        let path_env = std::env::var("PATH").unwrap_or_default();
        let new_path = format!("{}:{}", sy_bin.parent().unwrap().display(), path_env);
        unsafe {
            std::env::set_var("PATH", new_path);
        };

        let dest_sync_path = SyncPath::Local {
            path: dest.clone(),
            has_trailing_slash: false,
        };

        sync_push(&source, &dest_sync_path, false, false).await?;

        // Verify
        assert!(dest.join("file1.txt").exists());
        assert_eq!(fs::read_to_string(dest.join("file1.txt"))?, "Hello World");
        assert!(dest.join("file2.txt").exists());
        assert!(dest.join("subdir/file3.txt").exists());

        Ok(())
    }

    #[tokio::test]
    async fn test_server_mode_pull_local() -> anyhow::Result<()> {
        let temp = TempDir::new()?;
        let source = temp.path().join("src");
        let dest = temp.path().join("dest");

        fs::create_dir(&source)?;
        fs::create_dir(&dest)?;

        // Create source files (simulating remote)
        fs::write(source.join("file1.txt"), "Pull test file 1")?;
        fs::write(source.join("file2.txt"), "Pull test file 2")?;
        fs::create_dir(source.join("subdir"))?;
        fs::write(source.join("subdir/file3.txt"), "Pull nested file")?;

        // Find sy binary
        let sy_bin = std::env::current_exe()?
            .parent()
            .unwrap()
            .parent()
            .unwrap()
            .parent()
            .unwrap()
            .join("sy");

        if !sy_bin.exists() {
            eprintln!("Skipping test: sy binary not found at {}", sy_bin.display());
            return Ok(());
        }

        // Update PATH to include sy binary dir
        let path_env = std::env::var("PATH").unwrap_or_default();
        let new_path = format!("{}:{}", sy_bin.parent().unwrap().display(), path_env);
        unsafe {
            std::env::set_var("PATH", new_path);
        };

        let source_sync_path = SyncPath::Local {
            path: source.clone(),
            has_trailing_slash: false,
        };

        sync_pull(&source_sync_path, &dest, false, false).await?;

        // Verify
        assert!(dest.join("file1.txt").exists());
        assert_eq!(
            fs::read_to_string(dest.join("file1.txt"))?,
            "Pull test file 1"
        );
        assert!(dest.join("file2.txt").exists());
        assert_eq!(
            fs::read_to_string(dest.join("file2.txt"))?,
            "Pull test file 2"
        );
        assert!(dest.join("subdir/file3.txt").exists());
        assert_eq!(
            fs::read_to_string(dest.join("subdir/file3.txt"))?,
            "Pull nested file"
        );

        Ok(())
    }
}