als-statistics/tests/analyze/regression/matrix.test.js

Modular JS statistics toolkit for Node.js and the browser: descriptive stats, correlations (Pearson/Spearman/Kendall), t-tests & ANOVA (Student/Welch), reliability (Cronbach’s alpha), regression (linear/logistic), clustering (DBSCAN/HDBSCAN), and table/co

import test from 'node:test';
import assert from 'node:assert/strict';
import MU from '../../../lib/analyze/regression/matrix-utils.js';

test('matrix-utils: базовая алгебра', () => {
  const A = [[1,2],[3,4]];
  const B = [[5,6],[7,8]];

  const AT = MU.transpose(A);
  assert.deepEqual(AT, [[1,3],[2,4]]);

  const AB = MU.multiply(A,B);
  assert.deepEqual(AB, [[19,22],[43,50]]);
});

test('matrix-utils: solve выбрасывает на вырожденной матрице', () => {
  if (!MU.solve) return; // если solve нет — пропускаем
  const A = [[1,2],[2,4]]; // rank 1
  const b = [1,2];
  assert.throws(() => MU.solve(A,b), /singular|rank|invert/i);
});