tests: added 2fa seed case to test_wallet_vertical.py

plugins/trustedcoin/trustedcoin.py

@@ -388,6 +388,7 @@ class TrustedCoinPlugin(BasePlugin):
         f = lambda x: wizard.request_passphrase(seed, x)
         wizard.show_seed_dialog(run_next=f, seed_text=seed)
 
+    @classmethod
     def get_xkeys(self, seed, passphrase, derivation):
         from electrum.mnemonic import Mnemonic
         from electrum.keystore import bip32_root, bip32_private_derivation
@@ -396,6 +397,7 @@ class TrustedCoinPlugin(BasePlugin):
         xprv, xpub = bip32_private_derivation(xprv, "m/", derivation)
         return xprv, xpub
 
+    @classmethod
     def xkeys_from_seed(self, seed, passphrase):
         words = seed.split()
         n = len(words)