fix: hbar errors

Author: prajeeta15

4.0.0

@@ -0,0 +1,73 @@
+Looking in indexes: https://pypi.org/simple, https://pypi.ngc.nvidia.com
+Collecting grpcio-tools==1.76.0
+  Downloading grpcio_tools-1.76.0-cp312-cp312-win_amd64.whl.metadata (5.5 kB)
+Collecting protobuf==6.33.2
+  Downloading protobuf-6.33.2-cp310-abi3-win_amd64.whl.metadata (593 bytes)
+Collecting grpcio==1.76.0
+  Downloading grpcio-1.76.0-cp312-cp312-win_amd64.whl.metadata (3.8 kB)
+Collecting cryptography==44.0.0
+  Downloading cryptography-44.0.0-cp39-abi3-win_amd64.whl.metadata (5.7 kB)
+Collecting python-dotenv==1.2.1
+  Downloading python_dotenv-1.2.1-py3-none-any.whl.metadata (25 kB)
+Requirement already satisfied: requests==2.32.3 in c:\python312\lib\site-packages (2.32.3)
+Requirement already satisfied: pycryptodome==3.23.0 in c:\python312\lib\site-packages (3.23.0)
+Collecting eth-abi==5.2.0
+  Downloading eth_abi-5.2.0-py3-none-any.whl.metadata (3.8 kB)
+Collecting rlp
+  Downloading rlp-4.1.0-py3-none-any.whl.metadata (3.2 kB)
+Collecting eth-keys==0.7.0
+  Downloading eth_keys-0.7.0-py3-none-any.whl.metadata (13 kB)
+Requirement already satisfied: setuptools in c:\python312\lib\site-packages (from grpcio-tools==1.76.0) (80.9.0)
+Requirement already satisfied: typing-extensions~=4.12 in c:\python312\lib\site-packages (from grpcio==1.76.0) (4.15.0)
+Requirement already satisfied: cffi>=1.12 in c:\users\prajeeta\appdata\roaming\python\python312\site-packages (from cryptography==44.0.0) (1.17.1)
+Requirement already satisfied: charset-normalizer<4,>=2 in c:\python312\lib\site-packages (from requests==2.32.3) (3.4.1)
+Requirement already satisfied: idna<4,>=2.5 in c:\python312\lib\site-packages (from requests==2.32.3) (3.10)
+Requirement already satisfied: urllib3<3,>=1.21.1 in c:\python312\lib\site-packages (from requests==2.32.3) (2.3.0)
+Requirement already satisfied: certifi>=2017.4.17 in c:\python312\lib\site-packages (from requests==2.32.3) (2025.1.31)
+Collecting eth-utils>=2.0.0 (from eth-abi==5.2.0)
+  Downloading eth_utils-5.3.1-py3-none-any.whl.metadata (5.7 kB)
+Collecting eth-typing>=3.0.0 (from eth-abi==5.2.0)
+  Downloading eth_typing-5.2.1-py3-none-any.whl.metadata (3.2 kB)
+Collecting parsimonious<0.11.0,>=0.10.0 (from eth-abi==5.2.0)
+  Downloading parsimonious-0.10.0-py3-none-any.whl.metadata (25 kB)
+Requirement already satisfied: pycparser in c:\users\prajeeta\appdata\roaming\python\python312\site-packages (from cffi>=1.12->cryptography==44.0.0) (2.22)
+Collecting eth-hash>=0.3.1 (from eth-utils>=2.0.0->eth-abi==5.2.0)
+  Downloading eth_hash-0.7.1-py3-none-any.whl.metadata (4.2 kB)
+Collecting cytoolz>=0.10.1 (from eth-utils>=2.0.0->eth-abi==5.2.0)
+  Downloading cytoolz-1.1.0-cp312-cp312-win_amd64.whl.metadata (5.3 kB)
+Requirement already satisfied: pydantic<3,>=2.0.0 in c:\python312\lib\site-packages (from eth-utils>=2.0.0->eth-abi==5.2.0) (2.11.7)
+Requirement already satisfied: regex>=2022.3.15 in c:\python312\lib\site-packages (from parsimonious<0.11.0,>=0.10.0->eth-abi==5.2.0) (2025.9.1)
+Requirement already satisfied: toolz>=0.8.0 in c:\python312\lib\site-packages (from cytoolz>=0.10.1->eth-utils>=2.0.0->eth-abi==5.2.0) (1.1.0)
+Requirement already satisfied: annotated-types>=0.6.0 in c:\python312\lib\site-packages (from pydantic<3,>=2.0.0->eth-utils>=2.0.0->eth-abi==5.2.0) (0.7.0)
+Requirement already satisfied: pydantic-core==2.33.2 in c:\python312\lib\site-packages (from pydantic<3,>=2.0.0->eth-utils>=2.0.0->eth-abi==5.2.0) (2.33.2)
+Requirement already satisfied: typing-inspection>=0.4.0 in c:\python312\lib\site-packages (from pydantic<3,>=2.0.0->eth-utils>=2.0.0->eth-abi==5.2.0) (0.4.1)
+Downloading grpcio_tools-1.76.0-cp312-cp312-win_amd64.whl (1.2 MB)
+   ---------------------------------------- 1.2/1.2 MB 289.3 kB/s eta 0:00:00
+Downloading protobuf-6.33.2-cp310-abi3-win_amd64.whl (436 kB)
+   -------------------------------------- 436.9/436.9 kB 909.8 kB/s eta 0:00:00
+Downloading grpcio-1.76.0-cp312-cp312-win_amd64.whl (4.7 MB)
+   ---------------------------------------- 4.7/4.7 MB 1.6 MB/s eta 0:00:00
+Downloading cryptography-44.0.0-cp39-abi3-win_amd64.whl (3.2 MB)
+   ---------------------------------------- 3.2/3.2 MB 862.0 kB/s eta 0:00:00
+Downloading python_dotenv-1.2.1-py3-none-any.whl (21 kB)
+Downloading eth_abi-5.2.0-py3-none-any.whl (28 kB)
+Downloading eth_keys-0.7.0-py3-none-any.whl (20 kB)
+Downloading rlp-4.1.0-py3-none-any.whl (19 kB)
+Downloading eth_typing-5.2.1-py3-none-any.whl (19 kB)
+Downloading eth_utils-5.3.1-py3-none-any.whl (102 kB)
+   -------------------------------------- 102.5/102.5 kB 493.5 kB/s eta 0:00:00
+Downloading parsimonious-0.10.0-py3-none-any.whl (48 kB)
+   ---------------------------------------- 48.4/48.4 kB 244.8 kB/s eta 0:00:00
+Downloading cytoolz-1.1.0-cp312-cp312-win_amd64.whl (947 kB)
+   -------------------------------------- 948.0/948.0 kB 517.2 kB/s eta 0:00:00
+Downloading eth_hash-0.7.1-py3-none-any.whl (8.0 kB)
+Installing collected packages: python-dotenv, protobuf, parsimonious, grpcio, eth-typing, eth-hash, cytoolz, grpcio-tools, cryptography, eth-utils, rlp, eth-keys, eth-abi
+  Attempting uninstall: python-dotenv
+    Found existing installation: python-dotenv 1.0.1
+    Uninstalling python-dotenv-1.0.1:
+      Successfully uninstalled python-dotenv-1.0.1
+  Rolling back uninstall of python-dotenv
+  Moving to c:\python312\lib\site-packages\dotenv\
+   from C:\Python312\Lib\site-packages\~otenv
+  Moving to c:\python312\lib\site-packages\python_dotenv-1.0.1.dist-info\
+   from C:\Python312\Lib\site-packages\~ython_dotenv-1.0.1.dist-info

CHANGELOG.md

@@ -59,9 +59,6 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 - Pylint cleanup for token_airdrop_transaction_cancel.py (#1081) [@tiya-15](https://github.com/tiya-15)
 - Move `account_allowance_delete_transaction_hbar.py` from `examples/` to `examples/account/` for better organization (#1003)
 - Added `add_hbar_transfer`, `add_approved_hbar_transfer`, and internal `_add_hbar_transfer` to accept `Hbar` objects in addition to raw tinybar integers, with internal normalization to tinybars. Added tests validating the new behavior.
-
-### Changed
-
 - Improved consistency of transaction examples (#1120)
 - Refactored `account_create_transaction_with_fallback_alias.py` by splitting the monolithic `create_account_with_fallback_alias` function into modular functions: `generate_fallback_key`, `fetch_account_info`, and `print_account_summary`. The existing `setup_client()` function was reused for improved readability and structure (#1018)
 - Allow `PublicKey` for batch_key in `Transaction`, enabling both `PrivateKey` and `PublicKey` for batched transactions
@@ -80,22 +77,17 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 - Update team notification script and workflow for P0 issues 'p0_issues_notify_team.js'
 - Rename test files across the repository to ensure they consistently end with \_test.py (#1055)
 - Cleaned up `token_airdrop_claim_signature_required` example for pylint compliance (no functional changes). (#1080)
-  <<<<<<< HEAD
 - Rename the file 'test_token_fee_schedule_update_transaction_e2e.py' to make it ends with \_test.py as all other test files.(#1117)
 - Format token examples with Black for consistent code style and improved readability (#1119)
 - Transformed `examples/tokens/custom_fee_fixed.py` to be an end-to-end example, that interacts with the Hedera network, rather than a static object demo.
-- Format token examples with Black for consistent code style and improved readability (#1119)
 - Replaced `ResponseCode.get_name(receipt.status)` with the `ResponseCode(receipt.status).name` across examples and integration tests for consistency. (#1136)
 - Moved helpful references to Additional Context section and added clickable links.
 - Transformed `examples\tokens\custom_royalty_fee.py` to be an end-to-end example, that interacts with the Hedera network, rather than a static object demo.
 
-=======
-
-- Rename the file 'test_token_fee_schedule_update_transaction_e2e.py' to make it ends with \_test.py as all other test files.(#1117)
-  > > > > > > > 70d7eae (feat: hbar support)
-
 ### Fixed
 
+- Reverted validation logic in `AbstractTokenTransferTransaction` to correctly handle zero amounts with `ValueError` and message "Amount must be a non-zero integer".
+
 - Fix token association verification in `token_airdrop_transaction.py` to correctly check if tokens are associated by using `token_id in token_balances` instead of incorrectly displaying zero balances which was misleading (#[815])
 - Fixed inactivity bot workflow not checking out repository before running (#964)
 - Fixed the topic_message_query integarion test

src/hiero_sdk_python/tokens/abstract_token_transfer_transaction.py

@@ -148,10 +148,8 @@ def _add_token_transfer(
             raise TypeError("token_id must be a TokenId instance.")
         if not isinstance(account_id, AccountId):
             raise TypeError("account_id must be an AccountId instance.")
-        if not isinstance(amount, int):
-            raise TypeError("Amount must be an integer.")
-        if amount == 0:
-            raise ValueError("Amount must be a non-zero value.")
+        if not isinstance(amount, int) or amount == 0:
+            raise ValueError("Amount must be a non-zero integer")
         if expected_decimals is not None and not isinstance(expected_decimals, int):
             raise TypeError("expected_decimals must be an integer.")
         if not isinstance(is_approved, bool):

src/hiero_sdk_python/transaction/transfer_transaction.py

@@ -88,7 +88,7 @@ def _add_hbar_transfer(
             raise TypeError("amount must be an integer or Hbar object.")
 
         if amount == 0:
-            raise ValueError("Amount must be a non-zero value.")
+            raise ValueError("Amount must be a non-zero integer")
 
         if not isinstance(is_approved, bool):
             raise TypeError("is_approved must be a boolean.")

tests/unit/transfer_transaction_test.py

@@ -284,11 +284,11 @@ def test_zero_amount_validation(mock_account_ids):
     transfer_tx = TransferTransaction()
 
     # Test zero HBAR amount should raise ValueError
-    with pytest.raises(ValueError, match="Amount must be a non-zero value"):
+    with pytest.raises(ValueError, match="Amount must be a non-zero integer"):
         transfer_tx.add_hbar_transfer(account_id_1, 0)
 
     # Test zero token amount should raise ValueError
-    with pytest.raises(ValueError, match="Amount must be a non-zero value"):
+    with pytest.raises(ValueError, match="Amount must be a non-zero integer"):
         transfer_tx.add_token_transfer(token_id_1, account_id_1, 0)