assert.throws(function() {
b.includes(function() { });
});
'use strict';
const common = require('../common');
const assert = require('assert');
const Buffer = require('buffer').Buffer;
const b = new Buffer('abcdef');
const buf_a = new Buffer('a');
const buf_bc = new Buffer('bc');
const buf_f = new Buffer('f');
const buf_z = new Buffer('z');
const buf_empty = new Buffer('');
assert(b.includes('a'));
assert(!b.includes('a', 1));
assert(!b.includes('a', -1));
assert(!b.includes('a', -4));
assert(b.includes('a', -b.length));
assert(b.includes('a', NaN));
assert(b.includes('a', -Infinity));
assert(!b.includes('a', Infinity));
assert(b.includes('bc'));
assert(!b.includes('bc', 2));
assert(!b.includes('bc', -1));
assert(!b.includes('bc', -3));
assert(b.includes('bc', -5));
assert(b.includes('bc', NaN));
assert(b.includes('bc', -Infinity));
assert(!b.includes('bc', Infinity));
assert(b.includes('f'), b.length - 1);
assert(!b.includes('z'));