test: Wallet methods are disabled when no wallet is loaded

src/wallet/rpcwallet.cpp

@@ -75,11 +75,6 @@ bool EnsureWalletIsAvailable(CWallet * const pwallet, bool avoidException)
     if (pwallet) return true;
     if (avoidException) return false;
     if (!HasWallets()) {
-        // Note: It isn't currently possible to trigger this error because
-        // wallet RPC methods aren't registered unless a wallet is loaded. But
-        // this error is being kept as a precaution, because it's possible in
-        // the future that wallet RPC methods might get or remain registered
-        // when no wallets are loaded.
         throw JSONRPCError(
             RPC_METHOD_NOT_FOUND, "Method not found (wallet method is disabled because no wallet is loaded)");
     }

test/functional/wallet_multiwallet.py

@@ -254,6 +254,7 @@ class MultiWalletTest(BitcoinTestFramework):
         for wallet_name in self.nodes[0].listwallets():
             self.nodes[0].unloadwallet(wallet_name)
         assert_equal(self.nodes[0].listwallets(), [])
+        assert_raises_rpc_error(-32601, "Method not found (wallet method is disabled because no wallet is loaded)", self.nodes[0].getwalletinfo)
 
 if __name__ == '__main__':
     MultiWalletTest().main()