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