| /** |
| * @license |
| * Copyright 2020 Google LLC |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| import * as Bytes from './bytes'; |
| import * as Random from './random'; |
| |
| describe('bytes test', function() { |
| it('concat', function() { |
| let ba1 = new Uint8Array(0); |
| let ba2 = new Uint8Array(0); |
| let ba3 = new Uint8Array(0); |
| let result = Bytes.concat(ba1, ba2, ba3); |
| expect(result.length).toBe(0); |
| |
| ba1 = Random.randBytes(10); |
| result = Bytes.concat(ba1, ba2, ba3); |
| expect(result.length).toBe(ba1.length); |
| expect(Bytes.toHex(result)).toBe(Bytes.toHex(ba1)); |
| |
| result = Bytes.concat(ba2, ba1, ba3); |
| expect(result.length).toBe(ba1.length); |
| expect(Bytes.toHex(result)).toBe(Bytes.toHex(ba1)); |
| |
| result = Bytes.concat(ba3, ba2, ba1); |
| expect(result.length).toBe(ba1.length); |
| expect(Bytes.toHex(result)).toBe(Bytes.toHex(ba1)); |
| |
| ba2 = Random.randBytes(11); |
| result = Bytes.concat(ba1, ba2, ba3); |
| expect(result.length).toBe(ba1.length + ba2.length); |
| expect(Bytes.toHex(result)).toBe(Bytes.toHex(ba1) + Bytes.toHex(ba2)); |
| |
| result = Bytes.concat(ba1, ba3, ba2); |
| expect(result.length).toBe(ba1.length + ba2.length); |
| expect(Bytes.toHex(result)).toBe(Bytes.toHex(ba1) + Bytes.toHex(ba2)); |
| |
| result = Bytes.concat(ba3, ba1, ba2); |
| expect(result.length).toBe(ba1.length + ba2.length); |
| expect(Bytes.toHex(result)).toBe(Bytes.toHex(ba1) + Bytes.toHex(ba2)); |
| |
| ba3 = Random.randBytes(12); |
| result = Bytes.concat(ba1, ba2, ba3); |
| expect(result.length).toBe(ba1.length + ba2.length + ba3.length); |
| expect(Bytes.toHex(result)) |
| .toBe(Bytes.toHex(ba1) + Bytes.toHex(ba2) + Bytes.toHex(ba3)); |
| }); |
| |
| it('from number', function() { |
| let number = 0; |
| expect(Array.from(Bytes.fromNumber(number))).toEqual([ |
| 0, 0, 0, 0, 0, 0, 0, 0 |
| ]); |
| number = 1; |
| expect(Array.from(Bytes.fromNumber(number))).toEqual([ |
| 0, 0, 0, 0, 0, 0, 0, 1 |
| ]); |
| number = 4294967296; // 2^32 |
| expect(Array.from(Bytes.fromNumber(number))).toEqual([ |
| 0, 0, 0, 1, 0, 0, 0, 0 |
| ]); |
| number = 4294967297; // 2^32 + 1 |
| expect(Array.from(Bytes.fromNumber(number))).toEqual([ |
| 0, 0, 0, 1, 0, 0, 0, 1 |
| ]); |
| number = Number.MAX_SAFE_INTEGER; // 2^53 - 1 |
| expect(Array.from(Bytes.fromNumber(number))).toEqual([ |
| 0, 31, 255, 255, 255, 255, 255, 255 |
| ]); |
| |
| expect(function() { |
| Bytes.fromNumber(3.14); |
| }).toThrow(); |
| expect(function() { |
| Bytes.fromNumber(-1); |
| }).toThrow(); |
| expect(function() { |
| Bytes.fromNumber(Number.MAX_SAFE_INTEGER + 1); |
| }).toThrow(); |
| }); |
| |
| it('to base64, remove all padding', function() { |
| for (let i = 0; i < 10; i++) { |
| const array = new Uint8Array(i); |
| const base64Representation = Bytes.toBase64(array, true); |
| expect(base64Representation[base64Representation.length - 1]) |
| .not.toBe('='); |
| } |
| }); |
| |
| it('to base64, from base64', function() { |
| for (let i = 0; i < 100; i++) { |
| const array = Random.randBytes(i); |
| const base64Representation = Bytes.toBase64(array, true); |
| const arrayRepresentation = Bytes.fromBase64(base64Representation, true); |
| expect(arrayRepresentation).toEqual(array); |
| } |
| }); |
| |
| it('from byte string', function() { |
| expect(Bytes.fromByteString('')) |
| .withContext('empty string') |
| .toEqual(new Uint8Array(0)); |
| |
| let arr = new Uint8Array( |
| [72, 101, 108, 108, 111, 44, 32, 119, 111, 114, 108, 100]); |
| expect(Bytes.fromByteString('Hello, world')) |
| .withContext('ASCII') |
| .toEqual(arr); |
| |
| arr = new Uint8Array([83, 99, 104, 246, 110]); |
| expect(Bytes.fromByteString('Sch\u00f6n')) |
| .withContext('Latin') |
| .toEqual(arr); |
| }); |
| |
| it('to byte string', function() { |
| expect(Bytes.toByteString(new Uint8Array(0))) |
| .withContext('empty string') |
| .toBe(''); |
| |
| let arr = new Uint8Array( |
| [72, 101, 108, 108, 111, 44, 32, 119, 111, 114, 108, 100]); |
| expect(Bytes.toByteString(arr)).withContext('ASCII').toBe('Hello, world'); |
| |
| arr = new Uint8Array([83, 99, 104, 246, 110]); |
| expect(Bytes.toByteString(arr)).withContext('Latin').toBe('Sch\u00f6n'); |
| }); |
| |
| it('to string, from string', function() { |
| for (let i = 0; i < 100; i++) { |
| const array = Random.randBytes(i); |
| const str = Bytes.toByteString(array); |
| const arrayRepresentation = Bytes.fromByteString(str); |
| expect(arrayRepresentation).toEqual(array); |
| } |
| }); |
| }); |