46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
|
|
||
|
|
var fs = require('fs')
|
||
|
|
var assert = require('assert')
|
||
|
|
var weak = require('weak')
|
||
|
|
var ref = require('../')
|
||
|
|
|
||
|
|
describe('reinterpretUntilZeros()', function () {
|
||
|
|
|
||
|
|
beforeEach(gc)
|
||
|
|
|
||
|
|
it('should return a new Buffer instance up until the first 0', function () {
|
||
|
|
var buf = new Buffer('hello\0world')
|
||
|
|
var buf2 = buf.reinterpretUntilZeros(1)
|
||
|
|
assert.equal(buf2.length, 'hello'.length)
|
||
|
|
assert.equal(buf2.toString(), 'hello')
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should return a new Buffer instance up until the first 0 starting from offset', function () {
|
||
|
|
var buf = new Buffer('hello\0world')
|
||
|
|
var buf2 = buf.reinterpretUntilZeros(1, 3)
|
||
|
|
assert.equal(buf2.length, 'lo'.length)
|
||
|
|
assert.equal(buf2.toString(), 'lo')
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should return a new Buffer instance up until the first 2-byte sequence of 0s', function () {
|
||
|
|
var str = 'hello world'
|
||
|
|
var buf = new Buffer(50)
|
||
|
|
var len = buf.write(str, 'ucs2')
|
||
|
|
buf.writeInt16LE(0, len) // NULL terminate the string
|
||
|
|
|
||
|
|
var buf2 = buf.reinterpretUntilZeros(2)
|
||
|
|
assert.equal(str.length, buf2.length / 2)
|
||
|
|
assert.equal(buf2.toString('ucs2'), str)
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should return a large Buffer instance > 10,000 bytes with UTF16-LE char bytes', function () {
|
||
|
|
var data = fs.readFileSync(__dirname + '/utf16le.bin');
|
||
|
|
var strBuf = ref.reinterpretUntilZeros(data, 2);
|
||
|
|
assert(strBuf.length > 10000);
|
||
|
|
var str = strBuf.toString('ucs2');
|
||
|
|
// the data in `utf16le.bin` should be a JSON parsable string
|
||
|
|
assert(JSON.parse(str));
|
||
|
|
})
|
||
|
|
|
||
|
|
})
|