@quantlab/handsontable/test/unit/helpers/Data.spec.js

Spreadsheet-like data grid editor that provides copy/paste functionality compatible with Excel/Google Docs

import {
  spreadsheetColumnLabel,
  spreadsheetColumnIndex,
} from 'handsontable/helpers/data';

describe('Data helper', () => {
  //
  // Handsontable.helper.spreadsheetColumnLabel
  //
  describe('spreadsheetColumnLabel', () => {
    it('should return valid column names based on provided column index', () => {
      expect(spreadsheetColumnLabel()).toBe('');
      expect(spreadsheetColumnLabel(0)).toBe('A');
      expect(spreadsheetColumnLabel(11)).toBe('L');
      expect(spreadsheetColumnLabel(113)).toBe('DJ');
      expect(spreadsheetColumnLabel(33439273)).toBe('BUDNIX');
    });
  });

  //
  // Handsontable.helper.spreadsheetColumnIndex
  //
  describe('spreadsheetColumnIndex', () => {
    it('should return valid column indexes based on provided column name', () => {
      expect(spreadsheetColumnIndex('')).toBe(-1);
      expect(spreadsheetColumnIndex('A')).toBe(0);
      expect(spreadsheetColumnIndex('L')).toBe(11);
      expect(spreadsheetColumnIndex('DJ')).toBe(113);
      expect(spreadsheetColumnIndex('BUDNIX')).toBe(33439273);
    });
  });
});