linx-simulator2/node_modules/ref/test/int64.js

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2019-09-18 08:11:16 +00:00
var assert = require('assert')
var ref = require('../')
describe('int64', function () {
var JS_MAX_INT = +9007199254740992
var JS_MIN_INT = -9007199254740992
it('should allow simple ints to be written and read', function () {
var buf = new Buffer(ref.sizeof.int64)
var val = 123456789
ref.writeInt64(buf, 0, val)
var rtn = ref.readInt64(buf, 0)
assert.equal(val, rtn)
})
it('should allow INT64_MAX to be written and read', function () {
var buf = new Buffer(ref.sizeof.int64)
var val = '9223372036854775807'
ref.writeInt64(buf, 0, val)
var rtn = ref.readInt64(buf, 0)
assert.equal(val, rtn)
})
it('should allow a hex String to be input (signed)', function () {
var buf = new Buffer(ref.sizeof.int64)
var val = '-0x1234567890'
ref.writeInt64(buf, 0, val)
var rtn = ref.readInt64(buf, 0)
assert.equal(parseInt(val, 16), rtn)
})
it('should allow an octal String to be input (signed)', function () {
var buf = new Buffer(ref.sizeof.int64)
var val = '-0777'
ref.writeInt64(buf, 0, val)
var rtn = ref.readInt64(buf, 0)
assert.equal(parseInt(val, 8), rtn)
})
it('should allow a hex String to be input (unsigned)', function () {
var buf = new Buffer(ref.sizeof.uint64)
var val = '0x1234567890'
ref.writeUInt64(buf, 0, val)
var rtn = ref.readUInt64(buf, 0)
assert.equal(parseInt(val, 16), rtn)
})
it('should allow an octal String to be input (unsigned)', function () {
var buf = new Buffer(ref.sizeof.uint64)
var val = '0777'
ref.writeUInt64(buf, 0, val)
var rtn = ref.readUInt64(buf, 0)
assert.equal(parseInt(val, 8), rtn)
})
it('should return a Number when reading JS_MIN_INT', function () {
var buf = new Buffer(ref.sizeof.int64)
ref.writeInt64(buf, 0, JS_MIN_INT)
var rtn = ref.readInt64(buf, 0)
assert.equal('number', typeof rtn)
assert.equal(JS_MIN_INT, rtn)
})
it('should return a Number when reading JS_MAX_INT', function () {
var buf = new Buffer(ref.sizeof.int64)
ref.writeInt64(buf, 0, JS_MAX_INT)
var rtn = ref.readInt64(buf, 0)
assert.equal('number', typeof rtn)
assert.equal(JS_MAX_INT, rtn)
})
it('should return a String when reading JS_MAX_INT+1', function () {
var buf = new Buffer(ref.sizeof.int64)
var plus_one = '9007199254740993'
ref.writeInt64(buf, 0, plus_one)
var rtn = ref.readInt64(buf, 0)
assert.equal('string', typeof rtn)
assert.equal(plus_one, rtn)
})
it('should return a String when reading JS_MIN_INT-1', function () {
var buf = new Buffer(ref.sizeof.int64)
var minus_one = '-9007199254740993'
ref.writeInt64(buf, 0, minus_one)
var rtn = ref.readInt64(buf, 0)
assert.equal('string', typeof rtn)
assert.equal(minus_one, rtn)
})
it('should return a Number when reading 0, even when written as a String', function () {
var buf = new Buffer(ref.sizeof.int64)
var zero = '0'
ref.writeInt64(buf, 0, zero)
var rtn = ref.readInt64(buf, 0)
assert.equal('number', typeof rtn)
assert.equal(0, rtn)
})
it('should throw a "no digits" Error when writing an invalid String (signed)', function () {
assert.throws(function () {
var buf = new Buffer(ref.sizeof.int64)
ref.writeInt64(buf, 0, 'foo')
}, /no digits we found in input String/)
})
it('should throw a "no digits" Error when writing an invalid String (unsigned)', function () {
assert.throws(function () {
var buf = new Buffer(ref.sizeof.uint64)
ref.writeUInt64(buf, 0, 'foo')
}, /no digits we found in input String/)
})
it('should throw an "out of range" Error when writing an invalid String (signed)', function () {
var e;
try {
var buf = new Buffer(ref.sizeof.int64)
ref.writeInt64(buf, 0, '10000000000000000000000000')
} catch (_e) {
e = _e;
}
assert(/input String numerical value out of range/.test(e.message));
})
it('should throw an "out of range" Error when writing an invalid String (unsigned)', function () {
var e;
try {
var buf = new Buffer(ref.sizeof.uint64)
ref.writeUInt64(buf, 0, '10000000000000000000000000')
} catch (_e) {
e = _e;
}
assert(/input String numerical value out of range/.test(e.message));
})
it('should throw an Error when reading an int64_t from the NULL pointer', function () {
assert.throws(function () {
ref.readInt64(ref.NULL)
})
})
it('should throw an Error when reading an uint64_t from the NULL pointer', function () {
assert.throws(function () {
ref.readUInt64(ref.NULL)
})
})
;['LE', 'BE'].forEach(function (endianness) {
describe(endianness, function () {
it('should read and write a signed ' + endianness + ' 64-bit integer', function () {
var val = -123456789
var buf = new Buffer(ref.sizeof.int64)
ref['writeInt64' + endianness](buf, 0, val)
assert.equal(val, ref['readInt64' + endianness](buf, 0))
})
it('should read and write an unsigned ' + endianness + ' 64-bit integer', function () {
var val = 123456789
var buf = new Buffer(ref.sizeof.uint64)
ref['writeUInt64' + endianness](buf, 0, val)
assert.equal(val, ref['readUInt64' + endianness](buf, 0))
})
})
})
})