99 lines
2.7 KiB
JavaScript
99 lines
2.7 KiB
JavaScript
|
|
||
|
|
var assert = require('assert')
|
||
|
|
var ref = require('../')
|
||
|
|
|
||
|
|
describe('C string', function () {
|
||
|
|
|
||
|
|
describe('readCString()', function () {
|
||
|
|
|
||
|
|
it('should return "" for a Buffer containing "\\0"', function () {
|
||
|
|
var buf = new Buffer('\0')
|
||
|
|
assert.strictEqual('', buf.readCString(0))
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should return "hello" for a Buffer containing "hello\\0world"', function () {
|
||
|
|
var buf = new Buffer('hello\0world')
|
||
|
|
assert.strictEqual('hello', buf.readCString(0))
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should throw an Error when reading from the NULL pointer', function () {
|
||
|
|
assert.throws(function () {
|
||
|
|
ref.NULL.readCString()
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
})
|
||
|
|
|
||
|
|
describe('writeCString()', function () {
|
||
|
|
|
||
|
|
it('should write a C string (NULL terminated) to a Buffer', function () {
|
||
|
|
var buf = new Buffer(20)
|
||
|
|
var str = 'hello world'
|
||
|
|
buf.writeCString(str)
|
||
|
|
for (var i = 0; i < str.length; i++) {
|
||
|
|
assert.equal(str.charCodeAt(i), buf[i])
|
||
|
|
}
|
||
|
|
assert.equal(0, buf[str.length])
|
||
|
|
})
|
||
|
|
|
||
|
|
})
|
||
|
|
|
||
|
|
describe('allocCString()', function () {
|
||
|
|
|
||
|
|
it('should return a new Buffer containing the given string', function () {
|
||
|
|
var buf = ref.allocCString('hello world')
|
||
|
|
assert.strictEqual('hello world', buf.readCString())
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should return the NULL pointer for `null` values', function () {
|
||
|
|
var buf = ref.allocCString(null)
|
||
|
|
assert(buf.isNull())
|
||
|
|
assert.strictEqual(0, buf.address())
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should return the NULL pointer for `undefined` values', function () {
|
||
|
|
var buf = ref.allocCString(undefined)
|
||
|
|
assert(buf.isNull())
|
||
|
|
assert.strictEqual(0, buf.address())
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should return the NULL pointer for a NULL pointer Buffer', function () {
|
||
|
|
var buf = ref.allocCString(ref.NULL)
|
||
|
|
assert(buf.isNull())
|
||
|
|
assert.strictEqual(0, buf.address())
|
||
|
|
})
|
||
|
|
|
||
|
|
})
|
||
|
|
|
||
|
|
describe('CString', function () {
|
||
|
|
|
||
|
|
it('should return JS `null` when given a pointer pointing to NULL', function () {
|
||
|
|
var buf = ref.alloc(ref.types.CString)
|
||
|
|
buf.writePointer(ref.NULL)
|
||
|
|
assert.strictEqual(null, buf.deref())
|
||
|
|
|
||
|
|
// another version of the same test
|
||
|
|
assert.strictEqual(null, ref.get(ref.NULL_POINTER, 0, ref.types.CString))
|
||
|
|
})
|
||
|
|
|
||
|
|
it('should read a utf8 string from a Buffer', function () {
|
||
|
|
var str = 'hello world'
|
||
|
|
var buf = ref.alloc(ref.types.CString)
|
||
|
|
buf.writePointer(new Buffer(str + '\0'))
|
||
|
|
assert.strictEqual(str, buf.deref())
|
||
|
|
})
|
||
|
|
|
||
|
|
// https://github.com/node-ffi/node-ffi/issues/169
|
||
|
|
it('should set a Buffer as backing store', function () {
|
||
|
|
var str = 'hey!'
|
||
|
|
var store = new Buffer(str + '\0')
|
||
|
|
var buf = ref.alloc(ref.types.CString)
|
||
|
|
ref.set(buf, 0, store)
|
||
|
|
|
||
|
|
assert.equal(str, ref.get(buf, 0))
|
||
|
|
})
|
||
|
|
|
||
|
|
})
|
||
|
|
|
||
|
|
})
|