feat: Adds cooling interpolation tests.

Sources/ManualS/Internal/SizingLimits.swift

@@ -4,7 +4,7 @@ import Models
 extension SizingLimits.Request {
   func respond() async throws -> SizingLimits.Response {
     return try .init(
-      oversizing: .oversizingLimit(systemType: systemType, houseLoad: houseLoad),
+      oversizing: .oversizingLimit(systemType: systemType, houseLoad: coolingLoad),
       undersizing: .undersizingLimits
     )
   }
@@ -20,7 +20,7 @@ private extension SizingLimits.Limits {
 
   static func oversizingLimit(
     systemType: SystemType,
-    houseLoad: HouseLoad?
+    houseLoad: Capacity.Cooling?
   ) throws -> Self {
     switch systemType {
     case let .heatingOnly(type: type):
@@ -51,7 +51,7 @@ private extension SystemType.HeatingOnlyType {
 }
 
 private func coolingTotalOversizingLimit(
-  houseLoad: HouseLoad?,
+  houseLoad: Capacity.Cooling?,
   compressorType: SystemType.CompressorType,
   climateType: SystemType.ClimateType
 ) throws -> Int {
@@ -67,7 +67,7 @@ private func coolingTotalOversizingLimit(
     guard let houseLoad else {
       throw HouseLoadError()
     }
-    let decimal = Double(houseLoad.coolingTotal + 15000) / Double(houseLoad.coolingTotal)
+    let decimal = Double(houseLoad.total + 15000) / Double(houseLoad.total)
     return Int(round(decimal * 100))
   }
 }