handle case of property already EPC C or above for funding

recommendations/optimiser/funding_optimiser.py

@@ -231,8 +231,8 @@ def optimise_with_funding_paths(p, input_measures, housing_type, funding: Fundin
     # We now produce a fabric only path for ECO4
     # We add in generic insulation funding paths (where there is no fixed measure)
     # Heating controls are only eligible if installed as part of a heating upgrade and so we do not include them
-    # here
-    if housing_type == "Social":
+    # here. We don't have an option if the property is a C or above
+    if housing_type == "Social" and p.data["current-energy-rating"] not in ["C", "B", "A"]:
         funding_paths = (
             [
                 {
@@ -301,7 +301,6 @@ def optimise_with_funding_paths(p, input_measures, housing_type, funding: Fundin
                 # We log an error and skip this - we should not see any errors but we can probably get a reasonable
                 # outcome for the end user without a complete termination of the process
                 logger.error("Skipping fixed selection due to minimum insulation violation: %s", fixed)
-                blah
                 continue
 
             scheme = _path_scheme(path_spec)
@@ -829,6 +828,11 @@ def make_funding_paths(p, input_measures, housing_type, funding: Funding):
     :param funding: The funding object that provides methods to check eligibility and calculate funding.
     :return:
     """
+
+    # If the property is currently EPC C, there is no funding availability
+    if p.data["current-energy-rating"] in ["C", "B", "A"]:
+        return [], input_measures
+
     # We handle the case of minimum insulation requirements. Whenever we have a heating system recommendation,
     # we *must* include an additional insulation measure, unless the property already has sufficient insulation.