Changes to rm-refactor-overloaded-assets-operators

Related MR: !93 (merged)

package/test_tools/__private/utilities/decimal_converter.py

 from decimal import Decimal
-from typing import Union
+from typing import Optional, Union
 import warnings
 
 
 class DecimalConverter:
     @classmethod
-    def convert(cls, amount: Union[int, float, str], precision: int) -> Decimal:
-        cls.__warn_if_precision_might_be_lost(amount, precision)
+    def convert(cls, amount: Union[int, float, str], precision: Optional[int] = None) -> Decimal:
+        if precision is not None:
+            cls.__warn_if_precision_might_be_lost(amount, precision)
 
         # We could not pass float variable directly to Decimal initializer as from the nature of floats it won't result
         # in the exact decimal value. We need to convert float to string first like https://stackoverflow.com/a/18886013
@@ -14,6 +15,9 @@ class DecimalConverter:
         if isinstance(amount, float):
             amount = repr(amount)
 
+        if precision is None:
+            return Decimal(amount).normalize()
+
         exponent = Decimal(10) ** (-1 * precision)
         return Decimal(amount).quantize(exponent).normalize()