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test(NODE-5594): add tests that make sure that fromStringWithRounding works like fromString excepting inexact rounding
1 parent e265d73 commit fa5fcd9

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‎test/node/decimal128_tests.js renamed to ‎test/node/decimal128.test.ts

Lines changed: 103 additions & 31 deletions
Original file line numberDiff line numberDiff line change
@@ -1,19 +1,20 @@
1-
'use strict';
1+
import { BSON } from '../register-bson';
2+
import { expect } from 'chai';
3+
import * as corpus from './tools/bson_corpus_test_loader';
24

3-
const BSON = require('../register-bson');
45
const Decimal128 = BSON.Decimal128;
56

6-
var NAN = Buffer.from(
7+
const NAN = Buffer.from(
78
[
89
0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
910
].reverse()
1011
);
11-
var INF_NEGATIVE_BUFFER = Buffer.from(
12+
const INF_NEGATIVE_BUFFER = Buffer.from(
1213
[
1314
0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1415
].reverse()
1516
);
16-
var INF_POSITIVE_BUFFER = Buffer.from(
17+
const INF_POSITIVE_BUFFER = Buffer.from(
1718
[
1819
0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1920
].reverse()
@@ -70,7 +71,7 @@ describe('Decimal128', function () {
7071
});
7172

7273
it('fromString NaN input', function (done) {
73-
var result = Decimal128.fromString('NaN');
74+
let result = Decimal128.fromString('NaN');
7475
expect(NAN).to.deep.equal(result.bytes);
7576
result = Decimal128.fromString('+NaN');
7677
expect(NAN).to.deep.equal(result.bytes);
@@ -92,7 +93,7 @@ describe('Decimal128', function () {
9293
});
9394

9495
it('fromString infinity input', function (done) {
95-
var result = Decimal128.fromString('Infinity');
96+
let result = Decimal128.fromString('Infinity');
9697
expect(INF_POSITIVE_BUFFER).to.deep.equal(result.bytes);
9798
result = Decimal128.fromString('+Infinity');
9899
expect(INF_POSITIVE_BUFFER).to.deep.equal(result.bytes);
@@ -107,8 +108,8 @@ describe('Decimal128', function () {
107108

108109
it('fromString simple', function (done) {
109110
// Create decimal from string value 1
110-
var result = Decimal128.fromString('1');
111-
var bytes = Buffer.from(
111+
let result = Decimal128.fromString('1');
112+
let bytes = Buffer.from(
112113
[
113114
0x30, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
114115
0x01
@@ -210,8 +211,8 @@ describe('Decimal128', function () {
210211

211212
it('fromString scientific format', function (done) {
212213
// Create decimal from string value 10e0
213-
var result = Decimal128.fromString('10e0');
214-
var bytes = Buffer.from(
214+
let result = Decimal128.fromString('10e0');
215+
let bytes = Buffer.from(
215216
[
216217
0x30, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
217218
0x0a
@@ -283,8 +284,8 @@ describe('Decimal128', function () {
283284

284285
it('fromString large format', function (done) {
285286
// Create decimal from string value 12345689012345789012345
286-
var result = Decimal128.fromString('12345689012345789012345');
287-
var bytes = Buffer.from(
287+
let result = Decimal128.fromString('12345689012345789012345');
288+
let bytes = Buffer.from(
288289
[
289290
0x30, 0x40, 0x00, 0x00, 0x00, 0x00, 0x02, 0x9d, 0x42, 0xda, 0x3a, 0x76, 0xf9, 0xe0, 0xd9,
290291
0x79
@@ -337,8 +338,8 @@ describe('Decimal128', function () {
337338
it('fromString exponent normalization', function (done) {
338339
// Create decimal from string value 1000000000000000000000000000000000000000
339340

340-
result = Decimal128.fromString('1000000000000000000000000000000000000000');
341-
bytes = Buffer.from(
341+
let result = Decimal128.fromString('1000000000000000000000000000000000000000');
342+
let bytes = Buffer.from(
342343
[
343344
0x30, 0x4c, 0x31, 0x4d, 0xc6, 0x44, 0x8d, 0x93, 0x38, 0xc1, 0x5b, 0x0a, 0x00, 0x00, 0x00,
344345
0x00
@@ -366,7 +367,7 @@ describe('Decimal128', function () {
366367
);
367368
expect(bytes).to.deep.equal(result.bytes);
368369

369-
var str =
370+
const str =
370371
'100000000000000000000000000000000000000000000000000000000000000000000' +
371372
'000000000000000000000000000000000000000000000000000000000000000000000' +
372373
'000000000000000000000000000000000000000000000000000000000000000000000' +
@@ -385,8 +386,8 @@ describe('Decimal128', function () {
385386

386387
// Create decimal from string value str
387388

388-
var result = Decimal128.fromString(str);
389-
var bytes = Buffer.from(
389+
result = Decimal128.fromString(str);
390+
bytes = Buffer.from(
390391
[
391392
0x37, 0xcc, 0x31, 0x4d, 0xc6, 0x44, 0x8d, 0x93, 0x38, 0xc1, 0x5b, 0x0a, 0x00, 0x00, 0x00,
392393
0x00
@@ -424,8 +425,8 @@ describe('Decimal128', function () {
424425

425426
it('fromString from string zeros', function (done) {
426427
// Create decimal from string value 0
427-
var result = Decimal128.fromString('0');
428-
var bytes = Buffer.from(
428+
let result = Decimal128.fromString('0');
429+
let bytes = Buffer.from(
429430
[
430431
0x30, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
431432
0x00
@@ -467,8 +468,8 @@ describe('Decimal128', function () {
467468

468469
it('fromString from string round', function (done) {
469470
// Create decimal from string value 10E-6177
470-
var result = Decimal128.fromString('10E-6177');
471-
var bytes = Buffer.from(
471+
let result = Decimal128.fromString('10E-6177');
472+
const bytes = Buffer.from(
472473
[
473474
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
474475
0x01
@@ -809,7 +810,7 @@ describe('Decimal128', function () {
809810
});
810811

811812
it('toString infinity', function (done) {
812-
var decimal = new Decimal128(
813+
let decimal = new Decimal128(
813814
Buffer.from(
814815
[
815816
0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -832,7 +833,7 @@ describe('Decimal128', function () {
832833
});
833834

834835
it('toString NaN', function (done) {
835-
var decimal = new Decimal128(
836+
let decimal = new Decimal128(
836837
Buffer.from(
837838
[
838839
0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -885,7 +886,7 @@ describe('Decimal128', function () {
885886
});
886887

887888
it('toString regular', function (done) {
888-
var decimal = new Decimal128(
889+
let decimal = new Decimal128(
889890
Buffer.from(
890891
[
891892
0x30, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -988,7 +989,7 @@ describe('Decimal128', function () {
988989
});
989990

990991
it('toString scientific', function (done) {
991-
var decimal = new Decimal128(
992+
let decimal = new Decimal128(
992993
Buffer.from(
993994
[
994995
0x5f, 0xfe, 0x31, 0x4d, 0xc6, 0x44, 0x8d, 0x93, 0x38, 0xc1, 0x5b, 0x0a, 0x00, 0x00, 0x00,
@@ -1111,7 +1112,7 @@ describe('Decimal128', function () {
11111112
});
11121113

11131114
it('toString zeros', function (done) {
1114-
var decimal = new Decimal128(
1115+
let decimal = new Decimal128(
11151116
Buffer.from(
11161117
[
11171118
0x30, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -1145,10 +1146,10 @@ describe('Decimal128', function () {
11451146

11461147
it('Serialize and Deserialize tests', function (done) {
11471148
// Test all methods around a simple serialization at object top level
1148-
var doc = { value: Decimal128.fromString('1') };
1149-
var buffer = BSON.serialize(doc);
1150-
var size = BSON.calculateObjectSize(doc);
1151-
var back = BSON.deserialize(buffer);
1149+
let doc = { value: Decimal128.fromString('1') };
1150+
let buffer = BSON.serialize(doc);
1151+
let size = BSON.calculateObjectSize(doc);
1152+
let back = BSON.deserialize(buffer);
11521153

11531154
expect(buffer.length).to.equal(size);
11541155
expect(doc).to.deep.equal(back);
@@ -1193,6 +1194,7 @@ describe('Decimal128', function () {
11931194
it('throws correct error for invalid constructor argument type', () => {
11941195
const constructorArgErrMsg = 'Decimal128 must take a Buffer or string';
11951196

1197+
// ts-ignore
11961198
expect(() => new Decimal128(-0)).to.throw(constructorArgErrMsg);
11971199
expect(() => new Decimal128(-1)).to.throw(constructorArgErrMsg);
11981200
expect(() => new Decimal128(10)).to.throw(constructorArgErrMsg);
@@ -1235,5 +1237,75 @@ describe('Decimal128', function () {
12351237
});
12361238
}
12371239
);
1240+
1241+
describe('fromStringWithRounding', function () {
1242+
context('Corpus tests', function () {
1243+
// Filter for only Decimal128 tests
1244+
for (const { description, valid, _filename, parseErrors } of corpus.filter(s =>
1245+
/Decimal128/.test(s.description)
1246+
)) {
1247+
const scenarioName = `${description} (${_filename})`;
1248+
describe(scenarioName, function () {
1249+
if (valid) {
1250+
// We only care about the extended json inputs because the bson inputs will not test the
1251+
// fromString or fromStringWithRounding code paths
1252+
const inputs = [
1253+
'canonical_extjson',
1254+
'degenerate_extjson',
1255+
'relaxed_extjson',
1256+
'converted_extjson'
1257+
];
1258+
for (const validTest of valid) {
1259+
context(`Valid Test: ${validTest.description}`, function () {
1260+
for (const input of inputs) {
1261+
if (validTest[input]) {
1262+
describe(`with ${input} input`, function () {
1263+
it('has same output as fromString', function () {
1264+
const extJSONString: string = JSON.parse(validTest[input]).d
1265+
.$numberDecimal;
1266+
expect(Decimal128.fromStringWithRounding(extJSONString)).to.deep.equal(
1267+
Decimal128.fromString(extJSONString)
1268+
);
1269+
});
1270+
});
1271+
}
1272+
}
1273+
});
1274+
}
1275+
}
1276+
if (parseErrors) {
1277+
// Filter out the inexact rounding tests
1278+
for (const parseErrorTest of parseErrors.filter(
1279+
p => !/Inexact/.test(p.description)
1280+
)) {
1281+
context(`ParseError - ${parseErrorTest.description}`, function () {
1282+
it('emits the same error as fromString', function () {
1283+
const errorOrNull = (f: () => void) => {
1284+
try {
1285+
f();
1286+
} catch (err) {
1287+
return err;
1288+
}
1289+
return null;
1290+
};
1291+
const fromStringError = errorOrNull(() =>
1292+
Decimal128.fromString(parseErrorTest.string)
1293+
);
1294+
const fromStringWithRoundingError = errorOrNull(() =>
1295+
Decimal128.fromStringWithRounding(parseErrorTest.string)
1296+
);
1297+
1298+
expect(fromStringError).to.be.instanceOf(Error);
1299+
expect(fromStringWithRoundingError).to.be.instanceOf(Error);
1300+
1301+
expect(fromStringWithRoundingError).to.deep.equal(fromStringError);
1302+
});
1303+
});
1304+
}
1305+
}
1306+
});
1307+
}
1308+
});
1309+
});
12381310
});
12391311
});

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