fix: add assertions to balance

Author: romanzac

tests-functional/tests/test_wakuext_community_token_permissions.py

@@ -111,7 +111,9 @@ def test_membership_with_valid_tokens(self, foundry_client):
 
         # Verify the balance directly with cast
         balance_result = foundry_client.get_erc20_balance(self.snt_address, member_address)
-        logger.debug(f"SNT balance check: exit_code={balance_result.exit_code}, output={balance_result.output.decode()}")
+        assert balance_result.exit_code == 0, "Balance check command failed"
+        balance = int(balance_result.output.decode().strip(), 16)
+        assert balance >= 1000000000000000000, f"Insufficient SNT balance: {balance}, expected at least 1000000000000000000 wei (1 token)"
 
         token_address = self.snt_address
 
@@ -174,7 +176,9 @@ def test_admin_token_permissions_with_valid_tokens(self, foundry_client):
 
         # Verify the balance directly with cast
         balance_result = foundry_client.get_erc20_balance(self.snt_address, member_address)
-        logger.debug(f"SNT balance check: exit_code={balance_result.exit_code}, output={balance_result.output.decode()}")
+        assert balance_result.exit_code == 0, "Balance check command failed"
+        balance = int(balance_result.output.decode().strip(), 16)
+        assert balance >= 1000000000000000000, f"Insufficient SNT balance: {balance}, expected at least 1000000000000000000 wei (1 token)"
 
         # Owner creates token-gated community with admin permission
         community_resp = self.owner.wakuext_service.create_community(