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decimal128_tests.js
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'use strict';
var BSON = require('../..'),
Decimal128 = BSON.Decimal128,
expect = require('chai').expect,
createBSON = require('../utils');
var NAN = new Buffer(
[
0x7c,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
var INF_NEGATIVE_BUFFER = new Buffer(
[
0xf8,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
var INF_POSITIVE_BUFFER = new Buffer(
[
0x78,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
describe('Decimal128', function() {
/**
* @ignore
*/
it('fromString invalid input', function(done) {
expect(function() {
Decimal128.fromString('E02');
}).to.throw;
expect(function() {
Decimal128.fromString('E+02');
}).to.throw;
expect(function() {
Decimal128.fromString('e+02');
}).to.throw;
expect(function() {
Decimal128.fromString('.');
}).to.throw;
expect(function() {
Decimal128.fromString('.e');
}).to.throw;
expect(function() {
Decimal128.fromString('');
}).to.throw;
expect(function() {
Decimal128.fromString('invalid');
}).to.throw;
expect(function() {
Decimal128.fromString('in');
}).to.throw;
expect(function() {
Decimal128.fromString('i');
}).to.throw;
expect(function() {
Decimal128.fromString('..1');
}).to.throw;
expect(function() {
Decimal128.fromString('1abcede');
}).to.throw;
expect(function() {
Decimal128.fromString('1.24abc');
}).to.throw;
expect(function() {
Decimal128.fromString('1.24abcE+02');
}).to.throw;
expect(function() {
Decimal128.fromString('1.24E+02abc2d');
}).to.throw;
done();
});
it('fromString NaN input', function(done) {
var result = Decimal128.fromString('NaN');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('+NaN');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('-NaN');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('-nan');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('+nan');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('nan');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('Nan');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('+Nan');
expect(NAN).to.deep.equal(result.bytes);
result = Decimal128.fromString('-Nan');
expect(NAN).to.deep.equal(result.bytes);
done();
});
it('fromString infinity input', function(done) {
var result = Decimal128.fromString('Infinity');
expect(INF_POSITIVE_BUFFER).to.deep.equal(result.bytes);
result = Decimal128.fromString('+Infinity');
expect(INF_POSITIVE_BUFFER).to.deep.equal(result.bytes);
result = Decimal128.fromString('+Inf');
expect(INF_POSITIVE_BUFFER).to.deep.equal(result.bytes);
result = Decimal128.fromString('-Inf');
expect(INF_NEGATIVE_BUFFER).to.deep.equal(result.bytes);
result = Decimal128.fromString('-Infinity');
expect(INF_NEGATIVE_BUFFER).to.deep.equal(result.bytes);
done();
});
it('fromString simple', function(done) {
// Create decimal from string value 1
var result = Decimal128.fromString('1');
var bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x01
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 0
result = Decimal128.fromString('0');
bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value -0
result = Decimal128.fromString('-0');
bytes = new Buffer(
[
0xb0,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value -1
result = Decimal128.fromString('-1');
bytes = new Buffer(
[
0xb0,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x01
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 12345678901234567
result = Decimal128.fromString('12345678901234567');
bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x2b,
0xdc,
0x54,
0x5d,
0x6b,
0x4b,
0x87
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 989898983458
result = Decimal128.fromString('989898983458');
bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0xe6,
0x7a,
0x93,
0xc8,
0x22
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value -12345678901234567
result = Decimal128.fromString('-12345678901234567');
bytes = new Buffer(
[
0xb0,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x2b,
0xdc,
0x54,
0x5d,
0x6b,
0x4b,
0x87
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 0.12345
result = Decimal128.fromString('0.12345');
bytes = new Buffer(
[
0x30,
0x36,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x30,
0x39
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 0.0012345
result = Decimal128.fromString('0.0012345');
bytes = new Buffer(
[
0x30,
0x32,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x30,
0x39
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 00012345678901234567
result = Decimal128.fromString('00012345678901234567');
bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x2b,
0xdc,
0x54,
0x5d,
0x6b,
0x4b,
0x87
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
done();
});
it('fromString scientific format', function(done) {
// Create decimal from string value 10e0
var result = Decimal128.fromString('10e0');
var bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x0a
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 1e1
result = Decimal128.fromString('1e1');
bytes = new Buffer(
[
0x30,
0x42,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x01
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 10e-1
result = Decimal128.fromString('10e-1');
bytes = new Buffer(
[
0x30,
0x3e,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x0a
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 12345678901234567e6111
result = Decimal128.fromString('12345678901234567e6111');
bytes = new Buffer(
[
0x5f,
0xfe,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x2b,
0xdc,
0x54,
0x5d,
0x6b,
0x4b,
0x87
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 1e-6176
result = Decimal128.fromString('1e-6176');
bytes = new Buffer(
[
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x01
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value "-100E-10
result = Decimal128.fromString('-100E-10');
bytes = new Buffer(
[
0xb0,
0x2c,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x64
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 10.50E8
result = Decimal128.fromString('10.50E8');
bytes = new Buffer(
[
0x30,
0x4c,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x04,
0x1a
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
done();
});
it('fromString large format', function(done) {
// Create decimal from string value 12345689012345789012345
var result = Decimal128.fromString('12345689012345789012345');
var bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x02,
0x9d,
0x42,
0xda,
0x3a,
0x76,
0xf9,
0xe0,
0xd9,
0x79
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 1234567890123456789012345678901234
result = Decimal128.fromString('1234567890123456789012345678901234');
bytes = new Buffer(
[
0x30,
0x40,
0x3c,
0xde,
0x6f,
0xff,
0x97,
0x32,
0xde,
0x82,
0x5c,
0xd0,
0x7e,
0x96,
0xaf,
0xf2
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 9.999999999999999999999999999999999E+6144
result = Decimal128.fromString('9.999999999999999999999999999999999E+6144');
bytes = new Buffer(
[
0x5f,
0xff,
0xed,
0x09,
0xbe,
0xad,
0x87,
0xc0,
0x37,
0x8d,
0x8e,
0x63,
0xff,
0xff,
0xff,
0xff
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 9.999999999999999999999999999999999E-6143
result = Decimal128.fromString('9.999999999999999999999999999999999E-6143');
bytes = new Buffer(
[
0x00,
0x01,
0xed,
0x09,
0xbe,
0xad,
0x87,
0xc0,
0x37,
0x8d,
0x8e,
0x63,
0xff,
0xff,
0xff,
0xff
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 5.192296858534827628530496329220095E+33
result = Decimal128.fromString('5.192296858534827628530496329220095E+33');
bytes = new Buffer(
[
0x30,
0x40,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
done();
});
it('fromString exponent normalization', function(done) {
// Create decimal from string value 1000000000000000000000000000000000000000
result = Decimal128.fromString('1000000000000000000000000000000000000000');
bytes = new Buffer(
[
0x30,
0x4c,
0x31,
0x4d,
0xc6,
0x44,
0x8d,
0x93,
0x38,
0xc1,
0x5b,
0x0a,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 10000000000000000000000000000000000
result = Decimal128.fromString('10000000000000000000000000000000000');
bytes = new Buffer(
[
0x30,
0x42,
0x31,
0x4d,
0xc6,
0x44,
0x8d,
0x93,
0x38,
0xc1,
0x5b,
0x0a,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 1000000000000000000000000000000000
result = Decimal128.fromString('1000000000000000000000000000000000');
bytes = new Buffer(
[
0x30,
0x40,
0x31,
0x4d,
0xc6,
0x44,
0x8d,
0x93,
0x38,
0xc1,
0x5b,
0x0a,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
var str =
'100000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'000000000000000000000000000000000000000000000000000000000000000000000' +
'0000000000000000000000000000000000';
// Create decimal from string value str
var result = Decimal128.fromString(str);
var bytes = new Buffer(
[
0x37,
0xcc,
0x31,
0x4d,
0xc6,
0x44,
0x8d,
0x93,
0x38,
0xc1,
0x5b,
0x0a,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// this should throw error according to spec.
// Create decimal from string value 1E-6177
// var result = Decimal128.fromString('1E-6177');
// var bytes = new Buffer(
// [
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00
// ].reverse()
// );
// expect(bytes).to.deep.equal(result.bytes);
done();
});
it('fromString from string zeros', function(done) {
// Create decimal from string value 0
var result = Decimal128.fromString('0');
var bytes = new Buffer(
[
0x30,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 0e-611
result = Decimal128.fromString('0e-611');
bytes = new Buffer(
[
0x2b,
0x7a,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 0e+6000
result = Decimal128.fromString('0e+6000');
bytes = new Buffer(
[
0x5f,
0x20,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// Create decimal from string value 1E-6177
result = Decimal128.fromString('-0e-1');
bytes = new Buffer(
[
0xb0,
0x3e,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
done();
});
it('fromString from string round', function(done) {
// Create decimal from string value 10E-6177
var result = Decimal128.fromString('10E-6177');
var bytes = new Buffer(
[
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x01
].reverse()
);
expect(bytes).to.deep.equal(result.bytes);
// // Create decimal from string value 15E-6177
// result = Decimal128.fromString('15E-6177');
// bytes = new Buffer(
// [
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x00,
// 0x02
// ].reverse()
// );
// expect(bytes).to.deep.equal(result.bytes);
// // var array = new Array(6179);
// // for(var i = 0; i < array.length; i++) array[i] = '0';
// // array[1] = '.';
// // array[6177] = '1';
// // array[6178] = '5';
// // // Create decimal from string value array
// // result = Decimal128.fromString(array.join(''));
// // bytes = new Buffer([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
// // , 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02].reverse());
// // expect(bytes).to.deep.equal(result.bytes);
// // Create decimal from string value 251E-6178
// result = Decimal128.fromString('251E-6178');
// bytes = new Buffer(
// [
// 0x00,