Add tests for calculate_hp_apr method

python/tests/base_api/test_calculate_hp_apr.py

+from __future__ import annotations
+
+from decimal import Decimal
+from typing import TYPE_CHECKING
+
+import pytest
+
+if TYPE_CHECKING:
+    from wax.interfaces import IWaxBaseInterface
+
+
+@pytest.mark.parametrize("unit_amount", ["coins", "satoshis"])
+@pytest.mark.descrbe("Should be able to calculate HP APR")
+def test_calculate_hp_apr(wax: IWaxBaseInterface, unit_amount: str) -> None:
+    hive_unit = getattr(wax.hive, unit_amount)
+
+    hp_apr = wax.calculate_hp_apr(
+        head_block_num=1_000_000,
+        vesting_reward_percent=1_500,
+        virtual_supply=hive_unit(10),
+        total_vesting_fund_hive=hive_unit(10),
+    )
+    assert hp_apr == Decimal("1.46")