tests/integer_range.rs


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use config::Config;

#[test]
fn wrapping_u16() {
    let c = Config::builder()
        .add_source(config::File::from_str(
            r#"
            [settings]
            port = 66000
            "#,
            config::FileFormat::Toml,
        ))
        .build()
        .unwrap();

    // FIXME: Can't compare ConfigError, because Unexpected are private.
    let _port_error = c.get::<u16>("settings.port").unwrap_err();
    /*
    assert!(matches!(
        Err(ConfigError::invalid_type(None, config::Unexpected::U64(66000), "an unsigned 16 bit integer"),)
        port_error
    ));
    */
}

#[test]
fn nonwrapping_u32() {
    let c = Config::builder()
        .add_source(config::File::from_str(
            r#"
            [settings]
            port = 66000
            "#,
            config::FileFormat::Toml,
        ))
        .build()
        .unwrap();

    let port: u32 = c.get("settings.port").unwrap();
    assert_eq!(port, 66000);
}

#[test]
#[should_panic]
fn invalid_signedness() {
    let c = Config::builder()
        .add_source(config::File::from_str(
            r#"
            [settings]
            port = -1
            "#,
            config::FileFormat::Toml,
        ))
        .build()
        .unwrap();

    let _: u32 = c.get("settings.port").unwrap();
}