<commit_before>var expect = require('chai').expect;
var allPermutations = require('../index').allPermutations;

describe('allPermutations', function () {
  it('should return empty list when called with nothing', function () {
    expect(allPermutations()).to.be.an('array');
  });
});<commit_msg>Require defensive copy<commit_after>var expect = require('chai').expect;
var allPermutations = require('../index').allPermutations;

describe('allPermutations', function () {
  it('should return empty list when called with nothing', function () {
    expect(allPermutations()).to.be.an('array');
  });

  it('should do a defensive copy', function () {
    var options = ['a', 'b'];
    expect(allPermutations(options, 1)).to.not.equal(options);
  });
});
{'fraction_non_alphanumeric': 0.17866666666666667, 'fraction_numerical': 0.0013333333333333333, 'mean_word_length': 5.310924369747899, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '3683847', 'n_tokens_mistral': 225, 'n_tokens_neox': 211, 'n_words': 50}