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if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false
var B = require('../').Buffer
var test = require('tape')
test('instanceof Buffer', function (t) {
var buf = new B([1, 2])
t.ok(buf instanceof B)
t.end()
})
test('convert to Uint8Array in modern browsers', function (t) {
if (B.TYPED_ARRAY_SUPPORT) {
var buf = new B([1, 2])
var uint8array = new Uint8Array(buf.buffer)
t.ok(uint8array instanceof Uint8Array)
t.equal(uint8array[0], 1)
t.equal(uint8array[1], 2)
} else {
t.pass('object impl: skipping test')
}
t.end()
})
test('indexes from a string', function (t) {
var buf = new B('abc')
t.equal(buf[0], 97)
t.equal(buf[1], 98)
t.equal(buf[2], 99)
t.end()
})
test('indexes from an array', function (t) {
var buf = new B([ 97, 98, 99 ])
t.equal(buf[0], 97)
t.equal(buf[1], 98)
t.equal(buf[2], 99)
t.end()
})
test('setting index value should modify buffer contents', function (t) {
var buf = new B([ 97, 98, 99 ])
t.equal(buf[2], 99)
t.equal(buf.toString(), 'abc')
buf[2] += 10
t.equal(buf[2], 109)
t.equal(buf.toString(), 'abm')
t.end()
})
test('storing negative number should cast to unsigned', function (t) {
var buf = new B(1)
if (B.TYPED_ARRAY_SUPPORT) {
// This does not work with the object implementation -- nothing we can do!
buf[0] = -3
t.equal(buf[0], 253)
}
buf = new B(1)
buf.writeInt8(-3, 0)
t.equal(buf[0], 253)
t.end()
})
test('test that memory is copied from array-like', function (t) {
if (B.TYPED_ARRAY_SUPPORT) {
var u = new Uint8Array(4)
var b = new B(u)
b[0] = 1
b[1] = 2
b[2] = 3
b[3] = 4
t.equal(u[0], 0)
t.equal(u[1], 0)
t.equal(u[2], 0)
t.equal(u[3], 0)
} else {
t.pass('object impl: skipping test')
}
t.end()
})