85 lines
2.5 KiB
TypeScript
85 lines
2.5 KiB
TypeScript
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import { describe, it } from 'mocha'
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import { expect } from 'chai'
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import {
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encodeUrlSafeBase64,
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parseUrlSafeBase64,
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telegramRleDecode,
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telegramRleEncode,
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} from '../src/utils'
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describe('parseUrlSafeBase64', () => {
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it('should parse url-safe base64', () => {
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expect(parseUrlSafeBase64('qu7d8aGTeuF6-g').toString('hex')).eq(
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'aaeeddf1a1937ae17afa'
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)
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})
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it('should parse normal base64', () => {
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expect(parseUrlSafeBase64('qu7d8aGTeuF6+g==').toString('hex')).eq(
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'aaeeddf1a1937ae17afa'
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)
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})
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})
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describe('encodeUrlSafeBase64', () => {
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it('should encode to url-safe base64', () => {
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expect(
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encodeUrlSafeBase64(Buffer.from('aaeeddf1a1937ae17afa', 'hex'))
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).eq('qu7d8aGTeuF6-g')
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})
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})
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describe('telegramRleEncode', () => {
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it('should not modify input if there are no \\x00', () => {
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expect(
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telegramRleEncode(Buffer.from('aaeeff', 'hex')).toString('hex')
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).eq('aaeeff')
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})
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it('should collapse consecutive \\x00', () => {
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expect(
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telegramRleEncode(Buffer.from('00000000aa', 'hex')).toString('hex')
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).eq('0004aa')
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expect(
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telegramRleEncode(
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Buffer.from('00000000aa000000aa', 'hex')
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).toString('hex')
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).eq('0004aa0003aa')
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expect(
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telegramRleEncode(Buffer.from('00000000aa0000', 'hex')).toString(
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'hex'
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)
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).eq('0004aa0002')
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expect(
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telegramRleEncode(Buffer.from('00aa00', 'hex')).toString('hex')
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).eq('0001aa0001')
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})
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})
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describe('telegramRleDecode', () => {
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it('should not mofify input if there are no \\x00', () => {
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expect(
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telegramRleDecode(Buffer.from('aaeeff', 'hex')).toString('hex')
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).eq('aaeeff')
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})
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it('should expand two-byte sequences starting with \\x00', () => {
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expect(
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telegramRleDecode(Buffer.from('0004aa', 'hex')).toString('hex')
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).eq('00000000aa')
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expect(
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telegramRleDecode(Buffer.from('0004aa0000', 'hex')).toString('hex')
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).eq('00000000aa')
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expect(
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telegramRleDecode(Buffer.from('0004aa0003aa', 'hex')).toString(
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'hex'
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)
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).eq('00000000aa000000aa')
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expect(
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telegramRleDecode(Buffer.from('0004aa0002', 'hex')).toString('hex')
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).eq('00000000aa0000')
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expect(
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telegramRleDecode(Buffer.from('0001aa0001', 'hex')).toString('hex')
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).eq('00aa00')
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})
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})
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