text: var compare = require('..');
  var assert = require('assert');
  
  // 配列
  assert( compare([], []));
  assert( compare([1, 2, 3], [1, 2, 3]));
  assert(!compare([1, 2, 3], [1, 2]));
  assert(!compare([1, 2], [1, 2, 3]));
  assert( compare(Array(), []));
  assert( compare(new Array(), []));
  assert( compare(Array(1), [undefined]));
  assert(!compare(Array(1), []));
  assert( compare(Array(1, 2, 3), [1, 2, 3]));
  