add test for BIP49 and BIP84

lib/wallet/account.js

@@ -924,6 +924,7 @@ class Account {
     this.nestedDepth = br.readU32();
     this.lookahead = br.readU8();
     this.accountKey = readKey(br);
+    this.accountKey.purpose = this.purpose;
     assert(this.type < Account.typesByVal.length);
 
     const count = br.readU8();

lib/wallet/wallet.js

@@ -85,6 +85,13 @@ class Wallet extends EventEmitter {
     if (!options)
       return this;
 
+    if (options.purpose) {
+      assert(common.purposes[options.purpose] !== undefined, 'Bad purpose');
+      this.purpose = options.purpose;
+    } else {
+      this.purpose = 'x';
+    }
+
     let key = options.master;
     let id, token, mnemonic;
 
@@ -99,6 +106,7 @@ class Wallet extends EventEmitter {
     } else {
       mnemonic = new Mnemonic(options.mnemonic);
       key = HD.fromMnemonic(mnemonic, options.password);
+      key.purpose = this.purpose;
     }
 
     this.master.fromKey(key, mnemonic);

test/wallet-test.js

@@ -1478,6 +1478,58 @@ describe('Wallet', function() {
     assert.strictEqual(recAddr, 'bc1qcr8te4kr609gcawutmrza0j4xv80jy8z306fyu');
   });
 
+  // https://github.com/bitcoin/bips/blob/master/bip-0049.mediawiki#test-vectors
+  it('should create BIP49 wallet and addresses', async () => {
+    // test vectors provided for testnet only
+    const twdb = new WalletDB({ workers, network: 'testnet' });
+    await twdb.open();
+    const wallet = await twdb.create({
+      id: 'bip49test',
+      mnemonic: 'abandon abandon abandon abandon abandon abandon' +
+        ' abandon abandon abandon abandon abandon about',
+      purpose: 'y'
+    });
+
+    const account = await wallet.getAccount(0);
+    const recAddr = account.toJSON().receiveAddress;
+    assert.strictEqual(recAddr, '2Mww8dCYPUpKHofjgcXcBCEGmniw9CoaiD2');
+    await twdb.close();
+  });
+
+  // https://github.com/bitcoin/bips/blob/master/bip-0084.mediawiki#test-vectors
+  it('should import BIP84 zprvkey', async () => {
+    const wallet = await wdb.create({
+      id: 'zprvtest',
+      master: 'zprvAWgYBBk7JR8Gjrh4UJQ2uJdG1r3WNRRfURiABBE3RvMXYSrRJL' +
+        '62XuezvGdPvG6GFBZduosCc1YP5wixPox7zhZLfiUm8aunE96BBa4Kei5'
+    });
+
+    const account = await wallet.getAccount(0);
+    const recAddr1 = account.toJSON().receiveAddress;
+    const changeAddr = account.toJSON().changeAddress;
+    const accountKey = account.toJSON().accountKey;
+    let recAddr2 = await wallet.createReceive(0);
+    recAddr2 = recAddr2.toJSON().address;
+
+    assert.strictEqual(
+      recAddr1,
+      'bc1qcr8te4kr609gcawutmrza0j4xv80jy8z306fyu'
+    );
+    assert.strictEqual(
+      changeAddr,
+      'bc1q8c6fshw2dlwun7ekn9qwf37cu2rn755upcp6el'
+    );
+    assert.strictEqual(
+      accountKey,
+      'zpub6rFR7y4Q2AijBEqTUquhVz398htDFrtymD9xYYfG1m4wAcvPhXNfE3EfH1' +
+      'r1ADqtfSdVCToUG868RvUUkgDKf31mGDtKsAYz2oz2AGutZYs'
+    );
+    assert.strictEqual(
+      recAddr2,
+      'bc1qnjg0jd8228aq7egyzacy8cys3knf9xvrerkf9g'
+    );
+  });
+
   it('should import address', async () => {
     const key = KeyRing.generate();