332 lines
13 KiB
Rust
332 lines
13 KiB
Rust
use nalgebra_sparse::csr::CsrMatrix;
|
|
use nalgebra_sparse::SparseFormatErrorKind;
|
|
use nalgebra::DMatrix;
|
|
|
|
use proptest::prelude::*;
|
|
use proptest::sample::subsequence;
|
|
|
|
use crate::common::csr_strategy;
|
|
|
|
use std::collections::HashSet;
|
|
|
|
|
|
#[test]
|
|
fn csr_matrix_valid_data() {
|
|
// Construct matrix from valid data and check that selected methods return results
|
|
// that agree with expectations.
|
|
|
|
{
|
|
// A CSR matrix with zero explicitly stored entries
|
|
let offsets = vec![0, 0, 0, 0];
|
|
let indices = vec![];
|
|
let values = Vec::<i32>::new();
|
|
let mut matrix = CsrMatrix::try_from_csr_data(3, 2, offsets, indices, values).unwrap();
|
|
|
|
assert_eq!(matrix, CsrMatrix::zeros(3, 2));
|
|
|
|
assert_eq!(matrix.nrows(), 3);
|
|
assert_eq!(matrix.ncols(), 2);
|
|
assert_eq!(matrix.nnz(), 0);
|
|
assert_eq!(matrix.row_offsets(), &[0, 0, 0, 0]);
|
|
assert_eq!(matrix.col_indices(), &[]);
|
|
assert_eq!(matrix.values(), &[]);
|
|
|
|
assert!(matrix.triplet_iter().next().is_none());
|
|
assert!(matrix.triplet_iter_mut().next().is_none());
|
|
|
|
assert_eq!(matrix.row(0).ncols(), 2);
|
|
assert_eq!(matrix.row(0).nnz(), 0);
|
|
assert_eq!(matrix.row(0).col_indices(), &[]);
|
|
assert_eq!(matrix.row(0).values(), &[]);
|
|
assert_eq!(matrix.row_mut(0).ncols(), 2);
|
|
assert_eq!(matrix.row_mut(0).nnz(), 0);
|
|
assert_eq!(matrix.row_mut(0).col_indices(), &[]);
|
|
assert_eq!(matrix.row_mut(0).values(), &[]);
|
|
assert_eq!(matrix.row_mut(0).values_mut(), &[]);
|
|
assert_eq!(matrix.row_mut(0).cols_and_values_mut(), ([].as_ref(), [].as_mut()));
|
|
|
|
assert_eq!(matrix.row(1).ncols(), 2);
|
|
assert_eq!(matrix.row(1).nnz(), 0);
|
|
assert_eq!(matrix.row(1).col_indices(), &[]);
|
|
assert_eq!(matrix.row(1).values(), &[]);
|
|
assert_eq!(matrix.row_mut(1).ncols(), 2);
|
|
assert_eq!(matrix.row_mut(1).nnz(), 0);
|
|
assert_eq!(matrix.row_mut(1).col_indices(), &[]);
|
|
assert_eq!(matrix.row_mut(1).values(), &[]);
|
|
assert_eq!(matrix.row_mut(1).values_mut(), &[]);
|
|
assert_eq!(matrix.row_mut(1).cols_and_values_mut(), ([].as_ref(), [].as_mut()));
|
|
|
|
assert_eq!(matrix.row(2).ncols(), 2);
|
|
assert_eq!(matrix.row(2).nnz(), 0);
|
|
assert_eq!(matrix.row(2).col_indices(), &[]);
|
|
assert_eq!(matrix.row(2).values(), &[]);
|
|
assert_eq!(matrix.row_mut(2).ncols(), 2);
|
|
assert_eq!(matrix.row_mut(2).nnz(), 0);
|
|
assert_eq!(matrix.row_mut(2).col_indices(), &[]);
|
|
assert_eq!(matrix.row_mut(2).values(), &[]);
|
|
assert_eq!(matrix.row_mut(2).values_mut(), &[]);
|
|
assert_eq!(matrix.row_mut(2).cols_and_values_mut(), ([].as_ref(), [].as_mut()));
|
|
|
|
assert!(matrix.get_row(3).is_none());
|
|
assert!(matrix.get_row_mut(3).is_none());
|
|
|
|
let (offsets, indices, values) = matrix.disassemble();
|
|
|
|
assert_eq!(offsets, vec![0, 0, 0, 0]);
|
|
assert_eq!(indices, vec![]);
|
|
assert_eq!(values, vec![]);
|
|
}
|
|
|
|
{
|
|
// An arbitrary CSR matrix
|
|
let offsets = vec![0, 2, 2, 5];
|
|
let indices = vec![0, 5, 1, 2, 3];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let mut matrix = CsrMatrix::try_from_csr_data(3,
|
|
6,
|
|
offsets.clone(),
|
|
indices.clone(),
|
|
values.clone()).unwrap();
|
|
|
|
assert_eq!(matrix.nrows(), 3);
|
|
assert_eq!(matrix.ncols(), 6);
|
|
assert_eq!(matrix.nnz(), 5);
|
|
assert_eq!(matrix.row_offsets(), &[0, 2, 2, 5]);
|
|
assert_eq!(matrix.col_indices(), &[0, 5, 1, 2, 3]);
|
|
assert_eq!(matrix.values(), &[0, 1, 2, 3, 4]);
|
|
|
|
let expected_triplets = vec![(0, 0, 0), (0, 5, 1), (2, 1, 2), (2, 2, 3), (2, 3, 4)];
|
|
assert_eq!(matrix.triplet_iter().map(|(i, j, v)| (i, j, *v)).collect::<Vec<_>>(),
|
|
expected_triplets);
|
|
assert_eq!(matrix.triplet_iter_mut().map(|(i, j, v)| (i, j, *v)).collect::<Vec<_>>(),
|
|
expected_triplets);
|
|
|
|
assert_eq!(matrix.row(0).ncols(), 6);
|
|
assert_eq!(matrix.row(0).nnz(), 2);
|
|
assert_eq!(matrix.row(0).col_indices(), &[0, 5]);
|
|
assert_eq!(matrix.row(0).values(), &[0, 1]);
|
|
assert_eq!(matrix.row_mut(0).ncols(), 6);
|
|
assert_eq!(matrix.row_mut(0).nnz(), 2);
|
|
assert_eq!(matrix.row_mut(0).col_indices(), &[0, 5]);
|
|
assert_eq!(matrix.row_mut(0).values(), &[0, 1]);
|
|
assert_eq!(matrix.row_mut(0).values_mut(), &[0, 1]);
|
|
assert_eq!(matrix.row_mut(0).cols_and_values_mut(), ([0, 5].as_ref(), [0, 1].as_mut()));
|
|
|
|
assert_eq!(matrix.row(1).ncols(), 6);
|
|
assert_eq!(matrix.row(1).nnz(), 0);
|
|
assert_eq!(matrix.row(1).col_indices(), &[]);
|
|
assert_eq!(matrix.row(1).values(), &[]);
|
|
assert_eq!(matrix.row_mut(1).ncols(), 6);
|
|
assert_eq!(matrix.row_mut(1).nnz(), 0);
|
|
assert_eq!(matrix.row_mut(1).col_indices(), &[]);
|
|
assert_eq!(matrix.row_mut(1).values(), &[]);
|
|
assert_eq!(matrix.row_mut(1).values_mut(), &[]);
|
|
assert_eq!(matrix.row_mut(1).cols_and_values_mut(), ([].as_ref(), [].as_mut()));
|
|
|
|
assert_eq!(matrix.row(2).ncols(), 6);
|
|
assert_eq!(matrix.row(2).nnz(), 3);
|
|
assert_eq!(matrix.row(2).col_indices(), &[1, 2, 3]);
|
|
assert_eq!(matrix.row(2).values(), &[2, 3, 4]);
|
|
assert_eq!(matrix.row_mut(2).ncols(), 6);
|
|
assert_eq!(matrix.row_mut(2).nnz(), 3);
|
|
assert_eq!(matrix.row_mut(2).col_indices(), &[1, 2, 3]);
|
|
assert_eq!(matrix.row_mut(2).values(), &[2, 3, 4]);
|
|
assert_eq!(matrix.row_mut(2).values_mut(), &[2, 3, 4]);
|
|
assert_eq!(matrix.row_mut(2).cols_and_values_mut(), ([1, 2, 3].as_ref(), [2, 3, 4].as_mut()));
|
|
|
|
assert!(matrix.get_row(3).is_none());
|
|
assert!(matrix.get_row_mut(3).is_none());
|
|
|
|
let (offsets2, indices2, values2) = matrix.disassemble();
|
|
|
|
assert_eq!(offsets2, offsets);
|
|
assert_eq!(indices2, indices);
|
|
assert_eq!(values2, values);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn csr_matrix_try_from_invalid_csr_data() {
|
|
|
|
{
|
|
// Empty offset array (invalid length)
|
|
let matrix = CsrMatrix::try_from_csr_data(0, 0, Vec::new(), Vec::new(), Vec::<u32>::new());
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::InvalidStructure);
|
|
}
|
|
|
|
{
|
|
// Offset array invalid length for arbitrary data
|
|
let offsets = vec![0, 3, 5];
|
|
let indices = vec![0, 1, 2, 3, 5];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::InvalidStructure);
|
|
}
|
|
|
|
{
|
|
// Invalid first entry in offsets array
|
|
let offsets = vec![1, 2, 2, 5];
|
|
let indices = vec![0, 5, 1, 2, 3];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::InvalidStructure);
|
|
}
|
|
|
|
{
|
|
// Invalid last entry in offsets array
|
|
let offsets = vec![0, 2, 2, 4];
|
|
let indices = vec![0, 5, 1, 2, 3];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::InvalidStructure);
|
|
}
|
|
|
|
{
|
|
// Invalid length of offsets array
|
|
let offsets = vec![0, 2, 2];
|
|
let indices = vec![0, 5, 1, 2, 3];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::InvalidStructure);
|
|
}
|
|
|
|
{
|
|
// Nonmonotonic offsets
|
|
let offsets = vec![0, 3, 2, 5];
|
|
let indices = vec![0, 1, 2, 3, 4];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::InvalidStructure);
|
|
}
|
|
|
|
{
|
|
// Nonmonotonic minor indices
|
|
let offsets = vec![0, 2, 2, 5];
|
|
let indices = vec![0, 2, 3, 1, 4];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::InvalidStructure);
|
|
}
|
|
|
|
{
|
|
// Minor index out of bounds
|
|
let offsets = vec![0, 2, 2, 5];
|
|
let indices = vec![0, 6, 1, 2, 3];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::IndexOutOfBounds);
|
|
}
|
|
|
|
{
|
|
// Duplicate entry
|
|
let offsets = vec![0, 2, 2, 5];
|
|
let indices = vec![0, 5, 2, 2, 3];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let matrix = CsrMatrix::try_from_csr_data(3, 6, offsets, indices, values);
|
|
assert_eq!(matrix.unwrap_err().kind(), &SparseFormatErrorKind::DuplicateEntry);
|
|
}
|
|
|
|
}
|
|
|
|
#[test]
|
|
fn csr_disassemble_avoids_clone_when_owned() {
|
|
// Test that disassemble avoids cloning the sparsity pattern when it holds the sole reference
|
|
// to the pattern. We do so by checking that the pointer to the data is unchanged.
|
|
|
|
let offsets = vec![0, 2, 2, 5];
|
|
let indices = vec![0, 5, 1, 2, 3];
|
|
let values = vec![0, 1, 2, 3, 4];
|
|
let offsets_ptr = offsets.as_ptr();
|
|
let indices_ptr = indices.as_ptr();
|
|
let values_ptr = values.as_ptr();
|
|
let matrix = CsrMatrix::try_from_csr_data(3,
|
|
6,
|
|
offsets,
|
|
indices,
|
|
values).unwrap();
|
|
|
|
let (offsets, indices, values) = matrix.disassemble();
|
|
assert_eq!(offsets.as_ptr(), offsets_ptr);
|
|
assert_eq!(indices.as_ptr(), indices_ptr);
|
|
assert_eq!(values.as_ptr(), values_ptr);
|
|
}
|
|
|
|
#[test]
|
|
fn csr_matrix_get_index() {
|
|
// TODO: Implement tests for ::get() and index()
|
|
}
|
|
|
|
#[test]
|
|
fn csr_matrix_row_iter() {
|
|
// TODO
|
|
}
|
|
|
|
proptest! {
|
|
#[test]
|
|
fn csr_double_transpose_is_identity(csr in csr_strategy()) {
|
|
prop_assert_eq!(csr.transpose().transpose(), csr);
|
|
}
|
|
|
|
#[test]
|
|
fn csr_transpose_agrees_with_dense(csr in csr_strategy()) {
|
|
let dense_transpose = DMatrix::from(&csr).transpose();
|
|
let csr_transpose = csr.transpose();
|
|
prop_assert_eq!(dense_transpose, DMatrix::from(&csr_transpose));
|
|
prop_assert_eq!(csr.nnz(), csr_transpose.nnz());
|
|
}
|
|
|
|
#[test]
|
|
fn csr_filter(
|
|
(csr, triplet_subset)
|
|
in csr_strategy()
|
|
.prop_flat_map(|matrix| {
|
|
let triplets: Vec<_> = matrix.triplet_iter().cloned_values().collect();
|
|
let subset = subsequence(triplets, 0 ..= matrix.nnz())
|
|
.prop_map(|triplet_subset| {
|
|
let set: HashSet<_> = triplet_subset.into_iter().collect();
|
|
set
|
|
});
|
|
(Just(matrix), subset)
|
|
}))
|
|
{
|
|
// We generate a CsrMatrix and a HashSet corresponding to a subset of the (i, j, v)
|
|
// values in the matrix, which we use for filtering the matrix entries.
|
|
// The resulting triplets in the filtered matrix must then be exactly equal to
|
|
// the subset.
|
|
let filtered = csr.filter(|i, j, v| triplet_subset.contains(&(i, j, *v)));
|
|
let filtered_triplets: HashSet<_> = filtered
|
|
.triplet_iter()
|
|
.cloned_values()
|
|
.collect();
|
|
|
|
prop_assert_eq!(filtered_triplets, triplet_subset);
|
|
}
|
|
|
|
#[test]
|
|
fn csr_lower_triangle_agrees_with_dense(csr in csr_strategy()) {
|
|
let csr_lower_triangle = csr.lower_triangle();
|
|
prop_assert_eq!(DMatrix::from(&csr_lower_triangle), DMatrix::from(&csr).lower_triangle());
|
|
prop_assert!(csr_lower_triangle.nnz() <= csr.nnz());
|
|
}
|
|
|
|
#[test]
|
|
fn csr_upper_triangle_agrees_with_dense(csr in csr_strategy()) {
|
|
let csr_upper_triangle = csr.upper_triangle();
|
|
prop_assert_eq!(DMatrix::from(&csr_upper_triangle), DMatrix::from(&csr).upper_triangle());
|
|
prop_assert!(csr_upper_triangle.nnz() <= csr.nnz());
|
|
}
|
|
|
|
#[test]
|
|
fn csr_diagonal_as_csr(csr in csr_strategy()) {
|
|
let d = csr.diagonal_as_csr();
|
|
let d_entries: HashSet<_> = d.triplet_iter().cloned_values().collect();
|
|
let csr_diagonal_entries: HashSet<_> = csr
|
|
.triplet_iter()
|
|
.cloned_values()
|
|
.filter(|&(i, j, _)| i == j)
|
|
.collect();
|
|
|
|
prop_assert_eq!(d_entries, csr_diagonal_entries);
|
|
}
|
|
} |