als-statistics/tests/columns/base-column.test.js

A powerful and lightweight JavaScript library for descriptive statistics, regression, clustering, outlier detection, and noise analysis using a flexible table/column architecture.

const { describe, it } = require('node:test');
const assert = require('node:assert');
const BaseColumn = require('../../lib/column/base');
const ColumnFilter = require('../../lib/table/filter');

describe('BaseColumn - New Features', () => {
   it('should count values with filter applied', () => {
      const filter = new ColumnFilter();
      filter.filterRows([1, 3]); // Фильтруем индексы 1 и 3
      const column = new BaseColumn([10, 20, 30, 40, 50], filter);
      
      const count = column.count((x) => x > 15, true);
      assert.deepStrictEqual(count, [30, 50]); // 20 и 40 отфильтрованы
   });

   it('should count all values when filtered=false', () => {
      const filter = new ColumnFilter();
      filter.filterRows([1, 3]);
      const column = new BaseColumn([10, 20, 30, 40, 50], filter);
      
      const count = column.count((x) => x > 15, false);
      assert.deepStrictEqual(count, [20, 30, 40, 50]);
   });

   it('should return empty array when no values match', () => {
      const column = new BaseColumn([10, 20, 30], null);
      const count = column.count((x) => x > 50);
      assert.deepStrictEqual(count, []);
   });
});