ariadnetor-tensor 0.0.4

Tensor library with support for dense and block-sparse tensors
Documentation 
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//! Tests for concatenate and stack operations.

use ariadnetor_tensor::{DenseTensorData, MemoryOrder};

#[test]
fn test_concatenate_column_major_axis0() {
    // CM 2x2 tensors concatenated on axis 0
    let a = DenseTensorData::<f64>::from_raw_parts(
        vec![1.0, 3.0, 2.0, 4.0],
        vec![2, 2],
        MemoryOrder::ColumnMajor,
    );
    let b = DenseTensorData::<f64>::from_raw_parts(
        vec![5.0, 7.0, 6.0, 8.0],
        vec![2, 2],
        MemoryOrder::ColumnMajor,
    );
    let c = DenseTensorData::concatenate(&[&a, &b], 0);
    assert_eq!(c.shape(), &[4, 2]);
    // CM 4x2: col0=[1,3,5,7], col1=[2,4,6,8]
    assert_eq!(c.data(), &[1.0, 3.0, 5.0, 7.0, 2.0, 4.0, 6.0, 8.0]);
}

#[test]
fn test_concatenate_column_major_axis1() {
    // CM 2x2 tensors concatenated on axis 1 (outermost for CM)
    let a = DenseTensorData::<f64>::from_raw_parts(
        vec![1.0, 2.0, 3.0, 4.0],
        vec![2, 2],
        MemoryOrder::ColumnMajor,
    );
    let b = DenseTensorData::<f64>::from_raw_parts(
        vec![5.0, 6.0, 7.0, 8.0],
        vec![2, 2],
        MemoryOrder::ColumnMajor,
    );
    let c = DenseTensorData::concatenate(&[&a, &b], 1);
    assert_eq!(c.shape(), &[2, 4]);
    // CM 2x4: block copy -> [a_data, b_data]
    assert_eq!(c.data(), &[1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0]);
}

#[test]
fn test_concatenate_rm_axis0() {
    let a = DenseTensorData::<f64>::from_raw_parts(
        vec![1.0, 2.0, 3.0, 4.0],
        vec![2, 2],
        MemoryOrder::RowMajor,
    );
    let c = DenseTensorData::concatenate(&[&a, &a], 0);
    assert_eq!(c.shape(), &[4, 2]);
    assert_eq!(c.data(), &[1.0, 2.0, 3.0, 4.0, 1.0, 2.0, 3.0, 4.0]);
}

#[test]
fn test_stack_rm_axis0() {
    let a = DenseTensorData::<f64>::from_raw_parts(
        vec![1.0, 2.0, 3.0, 4.0],
        vec![2, 2],
        MemoryOrder::RowMajor,
    );
    let s = DenseTensorData::stack(&[&a, &a], 0);
    assert_eq!(s.shape(), &[2, 2, 2]);
    assert_eq!(s.data(), &[1.0, 2.0, 3.0, 4.0, 1.0, 2.0, 3.0, 4.0]);
}