fix(ref-imp): automatically create bitcoin wallet

lib/bitcoin/BitcoinClient.ts

@@ -63,7 +63,9 @@ export default class BitcoinClient {
    * Initialize this bitcoin client.
    */
   public async initialize (): Promise<void> {
-
+    // Create wallet has to be called because as of bitcoin v0.21, a default wallet is no longer automatically created
+    // https://github.com/bitcoin/bitcoin/pull/15454
+    await this.createWallet();
     const walletAddress = this.bitcoinWallet.getAddress();
 
     Logger.info(`Checking if bitcoin contains a wallet for ${walletAddress}`);
@@ -227,6 +229,23 @@ export default class BitcoinClient {
     };
   }
 
+  private async createWallet () {
+    const walletNameToUse = 'sidetreeDefaultWallet';
+    const request = {
+      method: 'createwallet',
+      params: [walletNameToUse] // the wallet name
+    };
+
+    const response = await this.rpcCall(request, true);
+    if (response.error === null) {
+      Logger.info(`Wallet created with name "${walletNameToUse}".`);
+    } else {
+      // for the list of possible errors: https://github.com/bitcoin/bitcoin/blob/master/src/rpc/protocol.h
+      Logger.error(`Error code ${response.error.code} occured while attempting to create bitcoin wallet: ${response.error.message}`);
+    }
+
+  }
+
   /**
    * Gets the block data for the given block hash.
    * @param hash The hash of the block

tests/bitcoin/BitcoinClient.spec.ts

@@ -7,6 +7,7 @@ import BitcoinLockTransactionModel from '../../lib/bitcoin/models/BitcoinLockTra
 import BitcoinTransactionModel from '../../lib/bitcoin/models/BitcoinTransactionModel';
 import BitcoinWallet from '../../lib/bitcoin/BitcoinWallet';
 import IBitcoinWallet from '../../lib/bitcoin/interfaces/IBitcoinWallet';
+import Logger from '../../lib/common/Logger';
 import ReadableStream from '../../lib/common/ReadableStream';
 
 describe('BitcoinClient', async () => {
@@ -156,19 +157,24 @@ describe('BitcoinClient', async () => {
         return Promise.resolve(undefined);
       });
 
+      const createWalletSpy = spyOn(bitcoinClient as any, 'createWallet');
+
       await bitcoinClient.initialize();
       expect(walletExistsSpy).toHaveBeenCalled();
       expect(importSpy).toHaveBeenCalled();
+      expect(createWalletSpy).toHaveBeenCalled();
     });
 
     it('should not import key if the wallet already exist', async () => {
       const walletExistsSpy = spyOn(bitcoinClient as any, 'isAddressAddedToWallet').and.returnValue(Promise.resolve(true));
 
       const importSpy = spyOn(bitcoinClient as any, 'addWatchOnlyAddressToWallet');
+      const createWalletSpy = spyOn(bitcoinClient as any, 'createWallet');
 
       await bitcoinClient.initialize();
       expect(walletExistsSpy).toHaveBeenCalled();
       expect(importSpy).not.toHaveBeenCalled();
+      expect(createWalletSpy).toHaveBeenCalled();
     });
   });
 
@@ -319,6 +325,30 @@ describe('BitcoinClient', async () => {
     });
   });
 
+  describe('createWallet', () => {
+    it('should create a wallet', async () => {
+      const rpcSpy = spyOn(bitcoinClient as any, 'rpcCall').and.returnValue({ error: null });
+      const loggerSpy = spyOn(Logger, 'info');
+      await bitcoinClient['createWallet']();
+      expect(rpcSpy).toHaveBeenCalledWith({
+        method: 'createwallet',
+        params: ['sidetreeDefaultWallet']
+      }, true);
+      expect(loggerSpy).toHaveBeenCalledWith(`Wallet created with name "sidetreeDefaultWallet".`);
+    });
+
+    it('should log error when create wallet fails', async () => {
+      const rpcSpy = spyOn(bitcoinClient as any, 'rpcCall').and.returnValue({ error: { code: 123, message: 'fake test error' } });
+      const loggerSpy = spyOn(Logger, 'error');
+      await bitcoinClient['createWallet']();
+      expect(rpcSpy).toHaveBeenCalledWith({
+        method: 'createwallet',
+        params: ['sidetreeDefaultWallet']
+      }, true);
+      expect(loggerSpy).toHaveBeenCalledWith(`Error code 123 occured while attempting to create bitcoin wallet: fake test error`);
+    });
+  });
+
   describe('getBlock', () => {
     it('should get the block data.', async () => {
       const transaction = generateBitcoreTransactionWrapper(bitcoinWalletImportString);