git-next/crates/cli/src/tests.rs

type TestResult = Result<(), Box<dyn std::error::Error>>;

mod init {
    use super::*;
    #[test]
    fn should_not_update_file_if_it_exists() -> TestResult {
        let fs = kxio::fs::temp()?;
        let file = fs.base().join(".git-next.toml");
        fs.file_write(&file, "contents")?;

        crate::init::run(fs.clone())?;

        assert_eq!(
            fs.file_read_to_string(&file)?,
            "contents",
            "The file has been changed"
        );

        Ok(())
    }

    #[test]
    fn should_create_default_file_if_not_exists() -> TestResult {
        let fs = kxio::fs::temp()?;

        crate::init::run(fs.clone())?;

        let file = fs.base().join(".git-next.toml");

        assert!(fs.path_exists(&file)?, "The file has not been created");

        assert_eq!(
            fs.file_read_to_string(&file)?,
            include_str!("../default.toml"),
            "The file does not match the default template"
        );

        Ok(())
    }
}