aaac7fed
 liuqimichale
add
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if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false
var B = require('../').Buffer
var test = require('tape')
test('buffer.toJSON', function (t) {
var data = [1, 2, 3, 4]
t.deepEqual(
new B(data).toJSON(),
{ type: 'Buffer', data: [ 1, 2, 3, 4 ] }
)
t.end()
})
test('buffer.copy', function (t) {
// copied from nodejs.org example
var buf1 = new B(26)
var buf2 = new B(26)
for (var i = 0; i < 26; i++) {
buf1[i] = i + 97 // 97 is ASCII a
buf2[i] = 33 // ASCII !
}
buf1.copy(buf2, 8, 16, 20)
t.equal(
buf2.toString('ascii', 0, 25),
'!!!!!!!!qrst!!!!!!!!!!!!!'
)
t.end()
})
test('test offset returns are correct', function (t) {
var b = new B(16)
t.equal(4, b.writeUInt32LE(0, 0))
t.equal(6, b.writeUInt16LE(0, 4))
t.equal(7, b.writeUInt8(0, 6))
t.equal(8, b.writeInt8(0, 7))
t.equal(16, b.writeDoubleLE(0, 8))
t.end()
})
test('concat() a varying number of buffers', function (t) {
var zero = []
var one = [ new B('asdf') ]
var long = []
for (var i = 0; i < 10; i++) {
long.push(new B('asdf'))
}
var flatZero = B.concat(zero)
var flatOne = B.concat(one)
var flatLong = B.concat(long)
var flatLongLen = B.concat(long, 40)
t.equal(flatZero.length, 0)
t.equal(flatOne.toString(), 'asdf')
t.deepEqual(flatOne, one[0])
t.equal(flatLong.toString(), (new Array(10 + 1).join('asdf')))
t.equal(flatLongLen.toString(), (new Array(10 + 1).join('asdf')))
t.end()
})
test('fill', function (t) {
var b = new B(10)
b.fill(2)
t.equal(b.toString('hex'), '02020202020202020202')
t.end()
})
test('fill (string)', function (t) {
var b = new B(10)
b.fill('abc')
t.equal(b.toString(), 'abcabcabca')
b.fill('է')
t.equal(b.toString(), 'էէէէէ')
t.end()
})
test('copy() empty buffer with sourceEnd=0', function (t) {
var source = new B([42])
var destination = new B([43])
source.copy(destination, 0, 0, 0)
t.equal(destination.readUInt8(0), 43)
t.end()
})
test('copy() after slice()', function (t) {
var source = new B(200)
var dest = new B(200)
var expected = new B(200)
for (var i = 0; i < 200; i++) {
source[i] = i
dest[i] = 0
}
source.slice(2).copy(dest)
source.copy(expected, 0, 2)
t.deepEqual(dest, expected)
t.end()
})
test('copy() ascending', function (t) {
var b = new B('abcdefghij')
b.copy(b, 0, 3, 10)
t.equal(b.toString(), 'defghijhij')
t.end()
})
test('copy() descending', function (t) {
var b = new B('abcdefghij')
b.copy(b, 3, 0, 7)
t.equal(b.toString(), 'abcabcdefg')
t.end()
})
test('buffer.slice sets indexes', function (t) {
t.equal((new B('hallo')).slice(0, 5).toString(), 'hallo')
t.end()
})
test('buffer.slice out of range', function (t) {
t.plan(2)
t.equal((new B('hallo')).slice(0, 10).toString(), 'hallo')
t.equal((new B('hallo')).slice(10, 2).toString(), '')
t.end()
})
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