await for addAccounts for HD Keyring

index.js

@@ -247,7 +247,7 @@ class KeyringController extends EventEmitter {
 
     if ((!opts || !opts.mnemonic) && type === KEYRINGS_TYPE_MAP.HD_KEYRING) {
       keyring.generateRandomMnemonic();
-      keyring.addAccounts();
+      await keyring.addAccounts();
     }
 
     const accounts = await keyring.getAccounts();

test/index.js

@@ -280,6 +280,22 @@ describe('KeyringController', function () {
 
       sinon.assert.calledOnce(initSpy);
     });
+
+    it('should add HD Key Tree when addAccounts is asynchronous', async function () {
+      const originalAccAccounts = HdKeyring.prototype.addAccounts;
+      sinon.stub(HdKeyring.prototype, 'addAccounts').callsFake(function () {
+        return new Promise((resolve) => {
+          setImmediate(() => {
+            resolve(originalAccAccounts.bind(this)());
+          });
+        });
+      });
+
+      const keyring = await keyringController.addNewKeyring('HD Key Tree');
+
+      const keyringAccounts = await keyring.getAccounts();
+      expect(keyringAccounts).toHaveLength(1);
+    });
   });
 
   describe('restoreKeyring', function () {