address.js
1.6 KB
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var ref = require('../')
var assert = require('assert')
var inspect = require('util').inspect
describe('address', function () {
var buf = new Buffer('hello')
it('should return 0 for the NULL pointer', function () {
assert.strictEqual(0, ref.address(ref.NULL))
})
it('should give a positive value for any other Buffer', function () {
var address = ref.address(buf)
assert.equal(typeof address, 'number')
assert(isFinite(address))
assert(address > 0)
})
it('should accept an offset value for the 2nd argument', function () {
var address = ref.address(buf)
assert.equal(address + 0, ref.address(buf, 0))
assert.equal(address + 1, ref.address(buf, 1))
assert.equal(address + 2, ref.address(buf, 2))
assert.equal(address + 3, ref.address(buf, 3))
assert.equal(address + 4, ref.address(buf, 4))
assert.equal(address + 5, ref.address(buf, 5))
})
it('should accept a negative offset value for the 2nd argument', function () {
var address = ref.address(buf)
assert.equal(address - 0, ref.address(buf, -0))
assert.equal(address - 1, ref.address(buf, -1))
assert.equal(address - 2, ref.address(buf, -2))
assert.equal(address - 3, ref.address(buf, -3))
assert.equal(address - 4, ref.address(buf, -4))
assert.equal(address - 5, ref.address(buf, -5))
})
it('should have an offset of zero when none is given', function () {
assert.equal(ref.address(buf), ref.address(buf, 0))
})
describe('inspect()', function () {
it('should overwrite the default Buffer#inspect() to print the memory address', function () {
assert(inspect(buf).indexOf(buf.hexAddress()) !== -1)
})
})
})