bitcoin-tx-lib/src/base/bech32.test.ts

A Typescript library for building and signing Bitcoin transactions

import { bytesToHex, hexToBytes } from "../utils"
import { Bech32 } from "./bech32"

describe("bech 32", () => {
    
    test("convert public key to address mainnet", () => {

        let bech = new Bech32({ publicKey: "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798" })

        let address = bech.getAddress()

        expect(address).toBe("bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4")
    })
    
    test("convert public key to address testnet", () => {

        let bech = new Bech32({ publicKey: "0333b81ed541c4beee28783890c013f1e5dd4eb38f60b78a4d30b5cad26996217f", network: "testnet" })

        let address = bech.getAddress()

        expect(address).toBe("tb1q4ppec5re8vpnm7qsmcjhkvf3gj500mwfw0yxaj")
    })
    
    test("convert ripemd in bech32 bytes", () => {

        let bech32 = new Bech32({ publicKey: "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798" })
        let bech = bech32.convert(hexToBytes("751e76e8199196d454941c45d1b3a323f1433bd6"))

        //0x000e140f070d1a001912060b0d081504140311021d030c1d03040f1814060e1e16
        expect(bech[0]).toBe(0x00) 
        expect(bech[1]).toBe(0x0e) 
        expect(bech[2]).toBe(0x14)
        expect(bech[3]).toBe(0x0f)
        expect(bech[4]).toBe(0x07)
    })
    
    test("generate address", () => {
        // let address = Bech32.toAddress("751e76e8199196d454941c45d1b3a323f1433bd6")
        let bech = new Bech32({ publicKey: "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798" })

        var intArray = Array.from(hexToBytes("000e140f070d1a001912060b0d081504140311021d030c1d03040f1814060e1e16"))

        let address = bech.encode(intArray)

        expect(address).toBe("bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4")
    })
    
    test("decode address bech32", () => {
        let bech = new Bech32({ publicKey: "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798" })

        var address = bech.decode("bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4")
        var int8array = new Uint8Array(address?.length ?? 0)
        address?.forEach((num, index) => int8array[index] = num)

        expect(bytesToHex(int8array)).toBe("000e140f070d1a001912060b0d081504140311021d030c1d03040f1814060e1e16")
    })
    
    test("get the script hash", () => {
        let bech = new Bech32({ publicKey: "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798" })

        let script = bech.getScriptPubkey(bech.getAddress())
      
        expect(script).toBe("751e76e8199196d454941c45d1b3a323f1433bd6")
    })
})