rustyroad 1.7.3

Rusty Road is a framework written in Rust that is based on Ruby on Rails. It is designed to provide the familiar conventions and ease of use of Ruby on Rails, while also taking advantage of the performance and efficiency of Rust.
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//! SHA-256 checksums for migration source files.

use sha2::{Digest, Sha256};
use std::fs;
use std::io;
use std::path::Path;

/// Returns the lowercase SHA-256 digest of a migration file's exact bytes.
pub fn file_checksum(path: &Path) -> Result<String, io::Error> {
    let bytes = fs::read(path)?;
    Ok(format!("{:x}", Sha256::digest(bytes)))
}

#[cfg(test)]
mod tests {
    use super::file_checksum;

    #[test]
    fn checksum_uses_exact_file_bytes() {
        let directory = tempfile::tempdir().unwrap();
        let path = directory.path().join("up.sql");
        std::fs::write(&path, b"SELECT 1;\n").unwrap();

        assert_eq!(
            file_checksum(&path).unwrap(),
            "b4e0497804e46e0a0b0b8c31975b062152d551bac49c3c2e80932567b4085dcd"
        );
    }
}