animatar 1.0.0

A blazingly fast, deterministic animal avatar generator.
Documentation 
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pub fn create_svg(size: u32, background: &str, shapes: &str, blackout: &str) -> String {
    format!(
        r#"<svg
    xmlns="http://www.w3.org/2000/svg"
    version="1.1"
    width="{size}"
    height="{size}"
    viewBox="0 0 500 500"
>
    {background}
    {shapes}
    {blackout}
</svg>"#
    )
}

pub fn create_background(round: bool, color: &str) -> String {
    let rx = if round { 250 } else { 0 };
    format!(
        r#"<rect
    width="500"
    height="500"
    rx="{rx}"
    fill="{color}"
/>"#
    )
}

pub fn create_blackout(round: bool) -> String {
    let d = if round {
        "M250,0a250,250 0 1,1 0,500"
    } else {
        "M250,0L500,0L500,500L250,500"
    };
    format!(
        r#"<path
    d="{d}"
    fill="\#15212a"
    fill-opacity="0.08"
/>"#
    )
}

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

    #[test]
    fn test_create_background_shape() {
        // Corrected assertions by escaping the inner quotes
        let round_bg = create_background(true, "#ffffff");
        assert!(round_bg.contains("rx=\"250\""));
        assert!(round_bg.contains("fill=\"#ffffff\""));

        let square_bg = create_background(false, "#000000");
        assert!(square_bg.contains("rx=\"0\""));
        assert!(square_bg.contains("fill=\"#000000\""));
    }

    #[test]
    fn test_create_blackout_shape() {
        let round_blackout = create_blackout(true);
        assert!(round_blackout.contains("d=\"M250,0a250,250 0 1,1 0,500\""));

        let square_blackout = create_blackout(false);
        assert!(square_blackout.contains("d=\"M250,0L500,0L500,500L250,500\""));
    }

    #[test]
    fn test_create_svg_wrapper() {
        let svg = create_svg(200, "<bg/>", "<shapes/>", "<blackout/>");
        assert!(svg.contains("width=\"200\""));
        assert!(svg.contains("height=\"200\""));
        assert!(svg.contains("<bg/>"));
        assert!(svg.contains("<shapes/>"));
        assert!(svg.contains("<blackout/>"));
    }
}