https://github.com/calder/rust-goldenfile

Simple goldenfile testing in Rust.
https://github.com/calder/rust-goldenfile

Last synced: about 1 month ago
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Simple goldenfile testing in Rust.

• Host: GitHub
• URL: https://github.com/calder/rust-goldenfile
• Owner: calder
• License: mit
• Created: 2016-12-01T19:14:43.000Z (over 7 years ago)
• Default Branch: main
• Last Pushed: 2024-04-16T15:27:11.000Z (about 2 months ago)
• Last Synced: 2024-04-16T17:08:09.099Z (about 2 months ago)
• Language: Rust
• Homepage:
• Size: 67.4 KB
• Stars: 35
• Watchers: 2
• Forks: 10
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• awesome-rust - goldenfile
• awesome-rust - goldenfile - A library providing a simple API for goldenfile testing. [](https://travis-ci.org/calder/rust-goldenfile) (Development tools / Testing)
• awesome-stars - calder/rust-goldenfile - Simple goldenfile testing in Rust. (Rust)
• awesome-rust-cn - goldenfile - (开发工具 Development tools / 测试 Testing)
• awesome-rust - goldenfile - A library providing a simple API for goldenfile testing. [](https://travis-ci.org/calder/rust-goldenfile) (Development tools / Testing)

README

        
# 👑 Rust Goldenfile

[![Documentation](https://docs.rs/goldenfile/badge.svg)](https://docs.rs/goldenfile) [![Latest Version](https://img.shields.io/crates/v/goldenfile.svg)](https://crates.io/crates/goldenfile) [![Build Status](https://github.com/calder/rust-goldenfile/actions/workflows/test.yaml/badge.svg)](https://github.com/calder/rust-goldenfile/actions/workflows/test.yaml?query=branch%3Amain) [![Coverage Status](https://codecov.io/github/calder/rust-goldenfile/branch/main/graph/badge.svg?token=ROF7q6w5no)](https://app.codecov.io/gh/calder/rust-goldenfile)

**Simple goldenfile testing in Rust.**

[Goldenfile](https://softwareengineering.stackexchange.com/questions/358786/what-is-golden-files) tests generate one or more output files as they run. If any files differ from their checked-in "golden" version, the test fails. This ensures that behavioral changes are intentional, explicit, and version controlled.

You can use goldenfiles to test the output of a parser, the order of a graph traversal, the result of a simulation, or anything else that should only change with human review.

## Usage

```rust

extern crate goldenfile;

use std::io::Write;

use goldenfile::Mint;

#[test]

fn test() {

    let mut mint = Mint::new("tests/goldenfiles");

    let mut file1 = mint.new_goldenfile("file1.txt").unwrap();

    let mut file2 = mint.new_goldenfile("file2.txt").unwrap();

    write!(file1, "Hello world!").unwrap();

    write!(file2, "Foo bar!").unwrap();

}

```

When the `Mint` goes out of scope, it compares the contents of each file to its checked-in golden version and fails the test if they differ. To update the checked-in versions, run:

```sh

UPDATE_GOLDENFILES=1 cargo test

```

## Contributing

Pull requests are welcome! This project follows the Rust community's [Code of Conduct](https://www.rust-lang.org/policies/code-of-conduct).