Rust Image library test cases for iteration methods on ImageBuffer with zero width and/or height causing 'chunk_size != 0' panic

Cargo.toml

[package]
name = "image-iter-panic-demo"
version = "0.1.0"
edition = "2018"

[dependencies]
image = { git = "https://github.com/image-rs/image" }

[lib]
path = "lib.rs"

lib.rs

#[cfg(test)]
use image::{ImageBuffer, RgbaImage};

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

    fn test_image() -> RgbaImage {
        ImageBuffer::new(0, 0)
    }

    #[test]
    fn test_rows_mut() {
        let mut image = test_image();
        let rows = image.rows_mut();
        assert_eq!(rows.count(), 0);
    }

    #[test]
    fn test_pixels_mut() {
        let mut image = test_image();
        let rows = image.pixels_mut();
        assert_eq!(rows.count(), 0);
    }

    #[test]
    fn test_rows() {
        let image = test_image();
        let rows = image.rows();
        assert_eq!(rows.count(), 0);
    }

    #[test]
    fn test_pixels() {
        let image = test_image();
        let rows = image.pixels();
        assert_eq!(rows.count(), 0);
    }
}

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

    fn test_image() -> RgbaImage {
        ImageBuffer::new(0, 2)
    }

    #[test]
    fn test_rows_mut() {
        let mut image = test_image();
        let rows = image.rows_mut();
        assert_eq!(rows.count(), 2);
    }

    #[test]
    fn test_pixels_mut() {
        let mut image = test_image();
        let rows = image.pixels_mut();
        assert_eq!(rows.count(), 0);
    }

    #[test]
    fn test_rows() {
        let image = test_image();
        let rows = image.rows();
        assert_eq!(rows.count(), 2);
    }

    #[test]
    fn test_pixels() {
        let image = test_image();
        let rows = image.pixels();
        assert_eq!(rows.count(), 0);
    }
}


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

    fn test_image() -> RgbaImage {
        ImageBuffer::new(2, 0)
    }

    #[test]
    fn test_rows_mut() {
        let mut image = test_image();
        let rows = image.rows_mut();
        assert_eq!(rows.count(), 0);
    }

    #[test]
    fn test_pixels_mut() {
        let mut image = test_image();
        let rows = image.pixels_mut();
        assert_eq!(rows.count(), 0);
    }

    #[test]
    fn test_rows() {
        let image = test_image();
        let rows = image.rows();
        assert_eq!(rows.count(), 0);
    }

    #[test]
    fn test_pixels() {
        let image = test_image();
        let rows = image.pixels();
        assert_eq!(rows.count(), 0);
    }
}