const expect = require('expect');
const rearg = require('./rearg.js');


  test('rearg is a Function', () => {
  expect(rearg).toBeInstanceOf(Function);
});
  var rearged = rearg(
    function(a, b, c) {
      return [a, b, c];
    },
    [2, 0, 1]
  );
  t.deepEqual(rearged('b', 'c', 'a'), ['a', 'b', 'c'], 'Reorders arguments in invoked function');