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Viewing file:     write_infinity.js (1.14 KB)      -rw-r--r--

if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false
var B = require('../').Buffer
var test = require('tape')

test('write/read Infinity as a float', function (t) {
  var buf = new B(4)
  t.equal(buf.writeFloatBE(Infinity, 0), 4)
  t.equal(buf.readFloatBE(0), Infinity)
  t.end()
})

test('write/read -Infinity as a float', function (t) {
  var buf = new B(4)
  t.equal(buf.writeFloatBE(-Infinity, 0), 4)
  t.equal(buf.readFloatBE(0), -Infinity)
  t.end()
})

test('write/read Infinity as a double', function (t) {
  var buf = new B(8)
  t.equal(buf.writeDoubleBE(Infinity, 0), 8)
  t.equal(buf.readDoubleBE(0), Infinity)
  t.end()
})

test('write/read -Infinity as a double', function (t) {
  var buf = new B(8)
  t.equal(buf.writeDoubleBE(-Infinity, 0), 8)
  t.equal(buf.readDoubleBE(0), -Infinity)
  t.end()
})

test('write/read float greater than max', function (t) {
  var buf = new B(4)
  t.equal(buf.writeFloatBE(4e38, 0), 4)
  t.equal(buf.readFloatBE(0), Infinity)
  t.end()
})

test('write/read float less than min', function (t) {
  var buf = new B(4)
  t.equal(buf.writeFloatBE(-4e40, 0), 4)
  t.equal(buf.readFloatBE(0), -Infinity)
  t.end()
})