test: Add BIP86 test case for Taproot address derivation

Author: landabaso

test/bip86.test.ts

@@ -0,0 +1,28 @@
+//https://github.com/bitcoin/bips/blob/master/bip-0086.mediawiki#user-content-Address_derivation
+
+import * as ecc from '@bitcoinerlab/secp256k1';
+import { networks } from 'bitcoinjs-lib';
+import { DescriptorsFactory, scriptExpressions } from '../dist/';
+import { mnemonicToSeedSync } from 'bip39';
+const { trBIP32 } = scriptExpressions;
+const { Output, BIP32 } = DescriptorsFactory(ecc);
+const network = networks.bitcoin;
+const masterNode = BIP32.fromSeed(
+  mnemonicToSeedSync(
+    'abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about'
+  ),
+  network
+);
+describe('BIP86', () => {
+  test('BIP86', () => {
+    const descriptor = trBIP32({
+      masterNode,
+      network,
+      account: 0,
+      change: 0,
+      index: 0
+    });
+    const output = new Output({ descriptor, network });
+    console.log(output.getAddress());
+  });
+});