fix(energy): Fix Btu/Btu --> kWh/kWh factor error

Author: ed-p-may

ph_units/unit_types/energy.py

@@ -320,12 +320,12 @@ class KiloWattHourPerKiloWattHour(Base_UnitType):
 
     __symbol__ = "KWH/KWH"
     __aliases__ = ["KWH/KWH"]
-    __factors__ = {"KWH/KWH": "{}*1", "BTU/BTU": "{}*3412.14"}
+    __factors__ = {"KWH/KWH": "{}*1", "BTU/BTU": "{}*1"}
 
 
 class BtuPerBtu(Base_UnitType):
     """BTU/BTU"""
 
     __symbol__ = "BTU/BTU"
     __aliases__ = ["BTU/BTU"]
-    __factors__ = {"KWH/KWH": "{}*0.000293071", "BTU/BTU": "{}*1"}
+    __factors__ = {"KWH/KWH": "{}*1", "BTU/BTU": "{}*1"}

tests/test_energy.py

@@ -150,11 +150,11 @@ def test_Btu_per_ft2_per_degree_Farenheit():
 
 def test_kWh_per_kWh():
     assert convert(1, "KWH/KWH", "KWH/KWH") == 1
-    assert convert(1, "KWH/KWH", "BTU/BTU") == pytest.approx(3412.14)
+    assert convert(1, "KWH/KWH", "BTU/BTU") == 1
 
 
 def test_Btu_per_Btu():
     assert convert(1, "BTU/BTU", "BTU/BTU") == 1
-    assert convert(1, "BTU/BTU", "KWH/KWH") == pytest.approx(0.000293071)
+    assert convert(1, "BTU/BTU", "KWH/KWH") == 1