text: const test = require('tape');
  const sortedLastIndexBy = require('./sortedLastIndexBy.js');
  
  test('Testing sortedLastIndexBy', (t) => {
    //For more information on all the methods supported by tape
    //Please go to https://github.com/substack/tape
    t.true(typeof sortedLastIndexBy === 'function', 'sortedLastIndexBy is a Function');
    t.equal(sortedLastIndexBy([{ x: 4 }, { x: 5 }], { x: 4 }, o => o.x), 1, 'Returns the highest index to insert the element without messing up the list order');
    //t.deepEqual(sortedLastIndexBy(args..), 'Expected');
    //t.equal(sortedLastIndexBy(args..), 'Expected');
    //t.false(sortedLastIndexBy(args..), 'Expected');
    //t.throws(sortedLastIndexBy(args..), 'Expected');
    t.end();
  });
  