split-string/test/options.separator.js at 51e009105752430c785381c891f366a7e696362e · jonschlinkert/split-string · GitHub

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'use strict';

require('mocha');
const assert = require('assert');
const split = require('..');

describe('separator', () => {
  it('should split on a custom separator', () => {
    assert.deepEqual(split(',,,', { separator: ',' }), ['', '', '', '']);
    assert.deepEqual(split('||||', { separator: '|' }), ['', '', '', '', '']);
    assert.deepEqual(split('||||', { separator: ',' }), ['||||']);
    assert.deepEqual(split('|,|,|,|', { separator: ',' }), ['|', '|', '|', '|']);
    assert.deepEqual(split('a/b/c', { separator: '/' }), ['a', 'b', 'c']);
    assert.deepEqual(split('a,b,c', { separator: ',' }), ['a', 'b', 'c']);
  });

  it('should not split on an escaped custom separator:', () => {
    assert.deepEqual(split('a/b/c\\/d', { separator: '/' }), ['a', 'b', 'c/d']);
  });

  it('should take a custom function for splitting', () => {
    assert.deepEqual(split('.a.b.c', state => !state.bos()), ['.a', 'b', 'c']);
    assert.deepEqual(split('a.b.c', state => state.prev() !== 'a'), ['a.b', 'c']);
    assert.deepEqual(split('a.b.c', state => state.next() !== 'b'), ['a.b', 'c']);
    assert.deepEqual(split('a.b.c', state => state.next() !== 'c'), ['a', 'b.c']);
  });

  it('should take more characters as custom separator', () => {
    assert.deepEqual(split('a&&b&&c', { separator: '&&' }), ['a', 'b', 'c']);
    assert.deepEqual(split('.a&&b&&c', { separator: '&&' }), ['.a', 'b', 'c']);
    assert.deepEqual(split('a||b&&c', { separator: '||' }), ['a', 'b&&c']);
    assert.deepEqual(split('a||b&&c', { separator: '&&' }), ['a||b', 'c']);
    assert.deepEqual(split('a&&&c', { separator: '&&' }), ['a', '&c']);
    assert.deepEqual(split('a&&&&c', { separator: '&&' }), ['a', '', 'c']);
  });

  it('should take more separators in array with more characters as custom separator', () => {
    const opts = { separator: ['||', '&&'] };
    assert.deepEqual(split('a&&b&&c', opts), ['a', 'b', 'c']);
    assert.deepEqual(split('.a&&b&&c', opts), ['.a', 'b', 'c']);
    assert.deepEqual(split('a||b&&c', opts), ['a', 'b', 'c']);
    assert.deepEqual(split('a||b&&c', opts), ['a', 'b', 'c']);
    assert.deepEqual(split('a&&&c', opts), ['a', '&c']);
    assert.deepEqual(split('a&&&&c', opts), ['a', '', 'c']);
  });
});