Breaking change of Wallet class fixed and test updated

packages/web3-eth-accounts/src/models/Wallet.js

@@ -40,6 +40,10 @@ export default class Wallet {
                     return target.accounts[name];
                 }
 
+                if (name === 'length') {
+                    return target.accountsIndex;
+                }
+
                 return target[name];
             }
         });

packages/web3-eth-accounts/tests/src/models/WalletTest.js

@@ -33,7 +33,13 @@ describe('WalletTest', () => {
         expect(wallet.defaultKeyName).toEqual('web3js_wallet');
     });
 
-    it('calls wallet.create and returns the expected value', () => {
+    it('calls the length property and returns the accountsIndex', () => {
+        wallet.accountsIndex = 99;
+
+        expect(wallet.length).toEqual(99);
+    });
+
+    it('calls create and returns the expected value', () => {
         Utils.randomHex.mockReturnValueOnce('asdf');
 
         Account.from.mockReturnValueOnce({address: '0x0', privateKey: '0x0'});
@@ -164,7 +170,7 @@ describe('WalletTest', () => {
 
         expect(() => {
             wallet.decrypt([true], 'pw');
-        }).toThrow("Couldn't decrypt accounts. Password wrong?");
+        }).toThrow('Couldn\'t decrypt accounts. Password wrong?');
 
         expect(Account.fromV3Keystore).toHaveBeenCalledWith(true, 'pw', false, accountsMock);
     });