add test in ten gateway tests

integration/obscurogateway/gateway_user.go

@@ -50,12 +50,24 @@ func NewUser(wallets []wallet.Wallet, serverAddressHTTP string, serverAddressWS
 }
 
 func (u GatewayUser) RegisterAccounts() error {
+	for _, w := range u.Wallets {
+		err := u.tgClient.RegisterAccount(w.PrivateKey(), w.Address())
+		if err != nil {
+			return err
+		}
+		testlog.Logger().Info(fmt.Sprintf("Successfully registered address %s for user: %s. With EIP-712 message", w.Address().Hex(), u.tgClient.UserID()))
+	}
+
+	return nil
+}
+
+func (u GatewayUser) RegisterAccountsNonEIP712() error {
 	for _, w := range u.Wallets {
 		err := u.tgClient.RegisterAccountNonEP712(w.PrivateKey(), w.Address())
 		if err != nil {
 			return err
 		}
-		testlog.Logger().Info(fmt.Sprintf("Successfully registered address %s for user: %s.", w.Address().Hex(), u.tgClient.UserID()))
+		testlog.Logger().Info(fmt.Sprintf("Successfully registered address %s for user: %s. With personal sign message", w.Address().Hex(), u.tgClient.UserID()))
 	}
 
 	return nil

integration/obscurogateway/tengateway_test.go

@@ -100,6 +100,7 @@ func TestTenGateway(t *testing.T) {
 		"testUnsubscribe":                      testUnsubscribe,
 		"testClosingConnectionWhileSubscribed": testClosingConnectionWhileSubscribed,
 		"testSubscriptionTopics":               testSubscriptionTopics,
+		"testDifferentMessagesOnRegister":      testDifferentMessagesOnRegister,
 	} {
 		t.Run(name, func(t *testing.T) {
 			test(t, httpURL, wsURL, w)
@@ -604,6 +605,20 @@ func testClosingConnectionWhileSubscribed(t *testing.T, httpURL, wsURL string, w
 	subscription.Unsubscribe()
 }
 
+func testDifferentMessagesOnRegister(t *testing.T, httpURL, wsURL string, w wallet.Wallet) {
+	user, err := NewUser([]wallet.Wallet{w, datagenerator.RandomWallet(integration.TenChainID)}, httpURL, wsURL)
+	require.NoError(t, err)
+	testlog.Logger().Info("Created user with encryption token: %s\n", user.tgClient.UserID())
+
+	// register all the accounts for the user with EIP-712 message format
+	err = user.RegisterAccounts()
+	require.NoError(t, err)
+
+	// register all the accounts for the user with personal sign message format
+	err = user.RegisterAccountsNonEIP712()
+	require.NoError(t, err)
+}
+
 func transferRandomAddr(t *testing.T, client *ethclient.Client, w wallet.Wallet) common.TxHash { //nolint: unused
 	ctx := context.Background()
 	toAddr := datagenerator.RandomAddress()