fix(token): allow unset token_id in TokenUnpauseTransaction

Signed-off-by: anchit-goel <anchitgoel5@gmail.com>

Author: anchit-goel

src/hiero_sdk_python/tokens/token_unpause_transaction.py

@@ -91,14 +91,8 @@ def _build_proto_body(self) -> TokenUnpauseTransactionBody:
 
         Returns:
             TokenUnpauseTransactionBody: The protobuf body for this transaction.
-
-        Raises:
-            ValueError: If account ID or token ID is not set.
         """
-        if self.token_id is None:
-            raise ValueError("Missing token ID")
-
-        return TokenUnpauseTransactionBody(token=self.token_id._to_proto())
+        return TokenUnpauseTransactionBody(token=self.token_id._to_proto() if self.token_id is not None else None)
 
     def build_transaction_body(self) -> TransactionBody:
         """

tests/integration/token_unpause_transaction_e2e_test.py

@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-import pytest
 from pytest import fixture
 
 from hiero_sdk_python.crypto.private_key import PrivateKey
@@ -79,8 +78,8 @@ def test_unpause_token_with_invalid_pasue_key(env, pausable_token):
 def test_unpause_token_when_token_id_not_set(env):
     """Test unpause transaction when token_id is not provided."""
     unpause_tx = TokenUnpauseTransaction()
-    with pytest.raises(ValueError, match="Missing token ID"):
-        unpause_tx.freeze_with(env.client)
+    unpause_receipt = unpause_tx.execute(env.client)
+    assert unpause_receipt.status == ResponseCode.INVALID_TOKEN_ID
 
 
 def test_unpause_token_with_invalid_token_id(env):

tests/unit/token_unpause_transaction_test.py

@@ -62,9 +62,10 @@ def test_build_transaction_body_when_token_id_not_set(mock_account_ids):
 
     unpause_tx = TokenUnpauseTransaction()
     unpause_tx.set_node_account_ids([node_account_id])
+    unpause_tx.operator_account_id = account_id
 
-    with pytest.raises(ValueError, match="Missing token ID"):
-        unpause_tx.build_transaction_body()
+    transaction_body = unpause_tx.build_transaction_body()
+    assert not transaction_body.token_unpause.HasField("token")
 
 
 def test_set_method(mock_account_ids):