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128 lines
2.8 KiB
128 lines
2.8 KiB
4 years ago
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if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false
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var B = require('../').Buffer
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var test = require('tape')
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test('buffer.toJSON', function (t) {
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var data = [1, 2, 3, 4]
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t.deepEqual(
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new B(data).toJSON(),
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{ type: 'Buffer', data: [ 1, 2, 3, 4 ] }
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)
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t.end()
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})
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test('buffer.copy', function (t) {
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// copied from nodejs.org example
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var buf1 = new B(26)
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var buf2 = new B(26)
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for (var i = 0; i < 26; i++) {
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buf1[i] = i + 97 // 97 is ASCII a
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buf2[i] = 33 // ASCII !
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}
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buf1.copy(buf2, 8, 16, 20)
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t.equal(
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buf2.toString('ascii', 0, 25),
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'!!!!!!!!qrst!!!!!!!!!!!!!'
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)
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t.end()
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})
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test('test offset returns are correct', function (t) {
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var b = new B(16)
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t.equal(4, b.writeUInt32LE(0, 0))
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t.equal(6, b.writeUInt16LE(0, 4))
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t.equal(7, b.writeUInt8(0, 6))
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t.equal(8, b.writeInt8(0, 7))
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t.equal(16, b.writeDoubleLE(0, 8))
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t.end()
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})
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test('concat() a varying number of buffers', function (t) {
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var zero = []
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var one = [ new B('asdf') ]
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var long = []
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for (var i = 0; i < 10; i++) {
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long.push(new B('asdf'))
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}
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var flatZero = B.concat(zero)
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var flatOne = B.concat(one)
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var flatLong = B.concat(long)
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var flatLongLen = B.concat(long, 40)
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t.equal(flatZero.length, 0)
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t.equal(flatOne.toString(), 'asdf')
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t.deepEqual(flatOne, one[0])
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t.equal(flatLong.toString(), (new Array(10 + 1).join('asdf')))
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t.equal(flatLongLen.toString(), (new Array(10 + 1).join('asdf')))
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t.end()
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})
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test('fill', function (t) {
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var b = new B(10)
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b.fill(2)
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t.equal(b.toString('hex'), '02020202020202020202')
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t.end()
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})
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test('fill (string)', function (t) {
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var b = new B(10)
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b.fill('abc')
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t.equal(b.toString(), 'abcabcabca')
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b.fill('է')
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t.equal(b.toString(), 'էէէէէ')
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t.end()
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})
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test('copy() empty buffer with sourceEnd=0', function (t) {
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var source = new B([42])
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var destination = new B([43])
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source.copy(destination, 0, 0, 0)
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t.equal(destination.readUInt8(0), 43)
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t.end()
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})
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test('copy() after slice()', function (t) {
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var source = new B(200)
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var dest = new B(200)
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var expected = new B(200)
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for (var i = 0; i < 200; i++) {
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source[i] = i
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dest[i] = 0
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}
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source.slice(2).copy(dest)
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source.copy(expected, 0, 2)
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t.deepEqual(dest, expected)
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t.end()
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})
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test('copy() ascending', function (t) {
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var b = new B('abcdefghij')
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b.copy(b, 0, 3, 10)
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t.equal(b.toString(), 'defghijhij')
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t.end()
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})
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test('copy() descending', function (t) {
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var b = new B('abcdefghij')
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b.copy(b, 3, 0, 7)
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t.equal(b.toString(), 'abcabcdefg')
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t.end()
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})
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test('buffer.slice sets indexes', function (t) {
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t.equal((new B('hallo')).slice(0, 5).toString(), 'hallo')
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t.end()
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})
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test('buffer.slice out of range', function (t) {
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t.plan(2)
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t.equal((new B('hallo')).slice(0, 10).toString(), 'hallo')
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t.equal((new B('hallo')).slice(10, 2).toString(), '')
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t.end()
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})
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