Fix actually eko/qnt/hq and add unit test

src/eko/quantities/heavy_quarks.py

@@ -65,19 +65,6 @@ def t(self, value: T):
 MatchingScales = HeavyQuarks[MatchingScale]
 
 
-def scales_from_ratios(
-    ratios: MatchingRatios, masses: HeavyQuarkMasses
-) -> MatchingScales:
-    """Convert ratios to squared scales.
-
-    .. todo::
-
-        make this a method
-
-    """
-    return MatchingScales(*(np.power(ratios, 2.0) * np.power(masses, 2.0)).tolist())
-
-
 # TODO: upgrade the following to StrEnum (requires py>=3.11) with that, it is
 # possible to replace all non-alias right sides with calls to enum.auto()
 
@@ -120,11 +107,6 @@ class HeavyInfo(DictLike):
     matching_ratios: MatchingRatios
     """Matching scale of heavy quark masses"""
 
-    @property
-    def matching_scales(self) -> MatchingScales:
-        """Compute matching scales."""
-        return scales_from_ratios(self.matching_ratios, self.masses)
-
     @property
     def squared_ratios(self) -> List[float]:
         """Squared ratios of matching scales."""

tests/eko/test_quantities.py

@@ -1,5 +1,6 @@
 from math import nan
 
+import numpy as np
 import pytest
 
 from eko.quantities import heavy_quarks as hq
@@ -37,11 +38,12 @@ def test_HeavyInfo():
         intrinsic_flavors=[4, 5],
         masses=hq.HeavyQuarkMasses(
             [
-                hq.QuarkMassRef(2.0, nan),
-                hq.QuarkMassRef(5.0, nan),
-                hq.QuarkMassRef(100.0, nan),
+                hq.QuarkMassRef([2.0, nan]),
+                hq.QuarkMassRef([5.0, nan]),
+                hq.QuarkMassRef([100.0, nan]),
             ]
         ),
         masses_scheme=hq.QuarkMassScheme.POLE,
         matching_ratios=hq.MatchingRatios([1.5, 2.0, 3.0]),
     )
+    np.testing.assert_allclose(i.squared_ratios, [2.25, 4.0, 9.0])