refactor: remove deprecated in_tinybars parameter

CHANGELOG.md

@@ -101,6 +101,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 - Fix unit test tet_query.py
 - TLS Hostname Mismatch & Certificate Verification Failure for Nodes
 - Workflow does not contain permissions for `pr-check-test-files` and `pr-check-codecov`
+- Remove deprecated 'in_tinybars' parameter and update related tests `/src/hiero_sdk_python/hbar.py`, `/tests/unit/hbar_test.py` and `/src/hiero_sdk_python/tokens/custom_fixed_fee.py`.
 
 ### Breaking Change
 

src/hiero_sdk_python/hbar.py

@@ -30,8 +30,7 @@ class Hbar:
     def __init__(
             self,
             amount: Union[int, float, Decimal],
-            unit: HbarUnit=HbarUnit.HBAR,
-            in_tinybars: bool=False # Deperecated
+            unit: HbarUnit=HbarUnit.HBAR
         ) -> None:
         """
         Create an Hbar instance with the given amount designated either in hbars or tinybars.
@@ -41,13 +40,6 @@ def __init__(
             unit: Unit of the provided amount.
             in_tinybars (deprecated): If True, treat the amount as tinybars directly.
         """
-        if in_tinybars:
-            warnings.warn(
-                "The 'in_tinybars' parameter is deprecated and will be removed in a future release. "
-                "Use `unit=HbarUnit.TINYBAR` instead.",
-                DeprecationWarning
-            )
-            unit = HbarUnit.TINYBAR
 
         if  unit == HbarUnit.TINYBAR:
             if not isinstance(amount, int):
@@ -115,7 +107,7 @@ def from_tinybars(cls, tinybars: int) -> "Hbar":
         """
         if not isinstance(tinybars, int):
             raise TypeError("tinybars must be an int.")
-        return cls(tinybars, in_tinybars=True)
+        return cls(tinybars, unit=HbarUnit.TINYBAR)
 
     @classmethod
     def from_string(cls, amount: str, unit: HbarUnit = HbarUnit.HBAR) -> "Hbar":
@@ -176,4 +168,4 @@ def __ge__(self, other: object) -> bool:
 
 Hbar.ZERO = Hbar(0)
 Hbar.MAX = Hbar(50_000_000_000)
-Hbar.MIN = Hbar(-50_000_000_000)
+Hbar.MIN = Hbar(-50_000_000_000)

src/hiero_sdk_python/tokens/custom_fixed_fee.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 import typing
+import warnings
 from hiero_sdk_python.tokens.custom_fee import CustomFee
 from hiero_sdk_python.hbar import Hbar
 
@@ -89,6 +90,10 @@ def __str__(self) -> str:
     def set_amount_in_tinybars(self, amount: int) -> "CustomFixedFee":
         """Sets the fee amount in tinybars.
 
+        .. deprecated:: 
+            Use :meth:`set_hbar_amount` with :meth:`Hbar.from_tinybars` instead.
+            For example: ``set_hbar_amount(Hbar.from_tinybars(amount))``
+
         Clears any previously set denominating token ID, implying the fee is in HBAR.
 
         Args:
@@ -97,6 +102,13 @@ def set_amount_in_tinybars(self, amount: int) -> "CustomFixedFee":
         Returns:
             CustomFixedFee: This CustomFixedFee instance for chaining.
         """
+        warnings.warn(
+            "set_amount_in_tinybars() is deprecated and will be removed in a future release. "
+            "Use set_hbar_amount(Hbar.from_tinybars(amount)) instead.",
+            DeprecationWarning,
+            stacklevel=2
+        )
+        self.denominating_token_id = None
         self.amount = amount
         return self
 

tests/unit/custom_fee_test.py

@@ -1,5 +1,6 @@
 from hiero_sdk_python.client.client import Client
 import pytest
+import warnings
 from unittest import mock
 from hiero_sdk_python.tokens.custom_fee import CustomFee
 from hiero_sdk_python.tokens.custom_fixed_fee import CustomFixedFee
@@ -9,6 +10,7 @@
 from hiero_sdk_python.account.account_id import AccountId
 from hiero_sdk_python.tokens.token_id import TokenId
 
+
 pytestmark = pytest.mark.unit
 
 def test_custom_fixed_fee_proto_round_trip():
@@ -253,3 +255,22 @@ def WhichOneof(self, name):
             return "unknown_fee"
     with pytest.raises(ValueError):
         CustomFee._from_proto(FakeProto())
+
+def test_set_amount_in_tinybars_deprecation():
+    """Test that set_amount_in_tinybars shows deprecation warning."""
+    from hiero_sdk_python.tokens.custom_fixed_fee import CustomFixedFee
+
+    fee = CustomFixedFee()
+
+    # Test that deprecation warning is raised
+    with warnings.catch_warnings(record=True) as w:
+        warnings.simplefilter("always")
+        fee.set_amount_in_tinybars(100)
+
+        assert len(w) == 1
+        assert issubclass(w[0].category, DeprecationWarning)
+        assert "set_amount_in_tinybars() is deprecated" in str(w[0].message)
+
+    # Verify the method still works correctly
+    assert fee.amount == 100
+    assert fee.denominating_token_id is None

tests/unit/hbar_test.py

@@ -23,15 +23,10 @@ def test_constructor():
 
 def test_constructor_in_tinybars():
     """Test creation directly in tinybars."""
-    hbar1 = Hbar(50, in_tinybars=True)
+    hbar1 = Hbar(50, unit=HbarUnit.TINYBAR)
     assert hbar1.to_tinybars() == 50
     assert hbar1.to_hbars() == 0.0000005
 
-    # If in_tinybars is False (Default)
-    hbar2 = Hbar(50, in_tinybars=False)
-    assert hbar2.to_tinybars() == 5_000_000_000
-    assert hbar2.to_hbars() == 50
-
 def test_constructor_with_unit():
     """Test creation directly in tinybars."""
     hbar1 = Hbar(50, unit=HbarUnit.TINYBAR)
@@ -65,7 +60,7 @@ def test_constructor_with_unit():
 def test_constructor_fractional_tinybar():
     """Test creation with fractional tinybars."""
     with pytest.raises(ValueError, match="Fractional tinybar value not allowed"):
-        Hbar(0.1, in_tinybars=True)
+        Hbar(0.1, unit=HbarUnit.TINYBAR)
 
 def test_constructor_invalid_type():
     """Test creation of Hbar with invalid type."""