conspire 0.7.0

The Rust interface to conspire.
Documentation 
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use crate::{
    geometry::grid::{Input, Output, Pixels, Voxels},
    io::{Npy, Write},
};

#[test]
fn round_trip_npy() {
    let data: Vec<u8> = (0..24).collect();
    let path = "target/voxels.npy";
    Voxels::new(data.clone(), [2, 3, 4])
        .write(Output::Npy(path))
        .unwrap();
    let read = Voxels::<u8>::try_from(Input::Npy(path)).unwrap();
    assert_eq!(read.data(), data);
    assert_eq!(read.nel(), &[2, 3, 4]);
}

#[test]
fn reads_c_order_with_transpose() {
    let path = "target/voxels_c.npy";
    Npy {
        data: vec![0u8, 1, 10, 11],
        shape: vec![2, 2],
        fortran_order: false,
    }
    .write(path)
    .unwrap();
    let pixels = Pixels::<u8>::try_from(Input::Npy(path)).unwrap();
    assert_eq!(pixels[[0, 0]], 0);
    assert_eq!(pixels[[1, 0]], 10);
    assert_eq!(pixels[[0, 1]], 1);
    assert_eq!(pixels[[1, 1]], 11);
}

#[test]
fn round_trip_vti() {
    let data: Vec<u8> = (0..24).collect();
    let path = "target/voxels.vti";
    Voxels::new(data.clone(), [2, 3, 4])
        .write(Output::Vti(path))
        .unwrap();
    let contents = std::fs::read_to_string(path).unwrap();
    assert!(contents.contains("type=\"ImageData\""));
    assert!(contents.contains("WholeExtent=\"0 2 0 3 0 4\""));
    let read = Voxels::<u8>::try_from(Input::Vti(path)).unwrap();
    assert_eq!(read.data(), data);
    assert_eq!(read.nel(), &[2, 3, 4]);
}

#[test]
fn round_trip_vti_2d() {
    let data: Vec<u16> = (0..6).collect();
    let path = "target/pixels.vti";
    Pixels::new(data.clone(), [2, 3])
        .write(Output::Vti(path))
        .unwrap();
    let contents = std::fs::read_to_string(path).unwrap();
    assert!(contents.contains("WholeExtent=\"0 2 0 3 0 0\""));
    let read = Pixels::<u16>::try_from(Input::Vti(path)).unwrap();
    assert_eq!(read.data(), data);
    assert_eq!(read.nel(), &[2, 3]);
}

#[test]
fn dimension_mismatch_errors() {
    let path = "target/pixels.npy";
    Pixels::new(vec![0u8; 6], [2, 3])
        .write(Output::Npy(path))
        .unwrap();
    assert!(Voxels::<u8>::try_from(Input::Npy(path)).is_err());
}

#[test]
fn round_trip_spn() {
    let data: Vec<u8> = (0..24).collect();
    let path = "target/voxels.spn";
    Voxels::new(data.clone(), [2, 3, 4])
        .write(Output::Spn(path))
        .unwrap();
    let read = Voxels::<u8>::try_from(Input::Spn(path, vec![2, 3, 4])).unwrap();
    assert_eq!(read.data(), data);
    assert_eq!(read.nel(), &[2, 3, 4]);
}

#[test]
fn spn_wrong_count_errors() {
    let data: Vec<u8> = (0..24).collect();
    let path = "target/voxels_bad.spn";
    Voxels::new(data, [2, 3, 4])
        .write(Output::Spn(path))
        .unwrap();
    assert!(Voxels::<u8>::try_from(Input::Spn(path, vec![2, 3, 3])).is_err());
}

#[test]
fn extract_sub_grid() {
    let data: Vec<u8> = (0..24).collect();
    let voxels = Voxels::new(data, [2, 3, 4]);
    let sub = voxels.extract([0..1, 1..3, 0..2]);
    assert_eq!(sub.nel(), &[1, 2, 2]);
    assert_eq!(sub[[0, 0, 0]], voxels[[0, 1, 0]]);
    assert_eq!(sub[[0, 1, 0]], voxels[[0, 2, 0]]);
    assert_eq!(sub[[0, 0, 1]], voxels[[0, 1, 1]]);
    assert_eq!(sub[[0, 1, 1]], voxels[[0, 2, 1]]);
}

#[test]
fn diff_marks_differences() {
    let a = Voxels::new(vec![0u8, 1, 2, 3], [2, 2, 1]);
    let b = Voxels::new(vec![0u8, 9, 2, 9], [2, 2, 1]);
    let d = a.diff(&b);
    assert_eq!(d.data(), vec![0u8, 1, 0, 1]);
    assert_eq!(d.nel(), &[2, 2, 1]);
}