Heat pump: Tests, Translation, Docstrings, Relocation (#89)

* Add first unit test for heatpump COP calculation

* Translate to english,

add type hints, improve unit tests.

* Run pre-commit

* Apply suggestions from code review

Co-authored-by: Michael Osthege <michael.osthege@outlook.com>

* Remove conftest file

---------

Co-authored-by: Michael Osthege <michael.osthege@outlook.com>

tests/test_heatpump.py

@@ -1,17 +1,36 @@
 import pytest
 
-from modules.class_heatpump import Heatpump
+from modules.heatpump import Heatpump
 
 
 @pytest.fixture(scope="function")
-def heatpump() -> Heatpump:
+def hp_5kw_24h() -> Heatpump:
     """Heatpump with 5 kw heating power and 24 h prediction"""
     return Heatpump(5000, 24)
 
 
 class TestHeatpump:
-    def test_cop(self, heatpump):
+    def test_cop(self, hp_5kw_24h: Heatpump):
         """Testing calculate COP for variouse outside temperatures"""
-        assert heatpump.cop_berechnen(-10) == 2.0, "COP for -10 degree isn't correct"
-        assert heatpump.cop_berechnen(0) == 3.0, "COP for 0 degree isn't correct"
-        assert heatpump.cop_berechnen(10) == 4.0, "COP for 10 degree isn't correct"
+        assert hp_5kw_24h.calculate_cop(-10) == 2.0
+        assert hp_5kw_24h.calculate_cop(0) == 3.0
+        assert hp_5kw_24h.calculate_cop(10) == 4.0
+        # Check edge case for outside temperature
+        out_temp_min = -100.1
+        out_temp_max = 100.1
+        with pytest.raises(ValueError, match=f"'{out_temp_min}' not in range"):
+            hp_5kw_24h.calculate_cop(out_temp_min)
+        with pytest.raises(ValueError, match=f"'{out_temp_max}' not in range"):
+            hp_5kw_24h.calculate_cop(out_temp_max)
+
+    def test_heating_output(self, hp_5kw_24h: Heatpump):
+        """Testing calculate of heating output"""
+        assert hp_5kw_24h.calculate_heating_output(-10.0) == 5000
+        assert hp_5kw_24h.calculate_heating_output(0.0) == 5000
+        assert hp_5kw_24h.calculate_heating_output(10.0) == pytest.approx(4939.583)
+
+    def test_heating_power(self, hp_5kw_24h: Heatpump):
+        """Testing calculation of heating power"""
+        assert hp_5kw_24h.calculate_heat_power(-10.0) == 2104
+        assert hp_5kw_24h.calculate_heat_power(0.0) == 1164
+        assert hp_5kw_24h.calculate_heat_power(10.0) == 548