text: const f = require('../lib/parseColstr.js');
  const settings = require('../lib/settings.js');
  
  module.exports = async () => [
    
    f() === undefined,
    
    f('0,1') !== undefined,
    
    f('1,2,3').length === 3,
    
    f('1:A')[0][1] === 'A',
    
    f('1,2:b')[1][1] === 'b',
    
    f('1:A 2:B 3:Z')[2][1] === 'Z',
    
    f('a:b') === undefined,
    
    f('a,b,c') === undefined,
    
    f('a b c:a') === undefined,
    
  ];