feat: Initial commit

Tests/EstimatedPressureTests/EstimatedPressureTests.swift

@@ -0,0 +1,94 @@
+import Dependencies
+import EstimatedPressureDependency
+import SharedModels
+import XCTest
+
+final class PositiveNumericTests: XCTestCase {
+
+  override func invokeTest() {
+    withDependencies {
+      $0.estimatedPressuresClient = .liveValue
+    } operation: {
+      super.invokeTest()
+    }
+  }
+
+  func testEstimatedAirflow() async throws {
+    @Dependency(\.estimatedPressuresClient.estimatedAirflow) var estimatedAirflow
+
+    let sut = try await estimatedAirflow(.init(
+      existingAirflow: 1501,
+      existingPressure: 0.874,
+      targetPressure: 0.5
+    ))
+    XCTAssertNotNil(sut)
+    XCTAssertEqual(round(sut.positiveValue), 1135)
+  }
+
+  func testEstimatedPressure() async throws {
+
+    @Dependency(\.estimatedPressuresClient.estimatedPressure) var estimatedPressure
+
+    let sut = try await estimatedPressure(.init(
+      existingPressure: 0.3,
+      existingAirflow: 1084,
+      targetAirflow: 1050
+    ))
+    XCTAssertEqual(round(sut.positiveValue * 1000) / 1000, 0.281)
+  }
+
+  func testExternalStaticPressure() {
+    var envelope = EquipmentMeasurement.furnaceAndCoil(
+      .init(
+        returnPlenumPressure: -0.1,
+        postFilterPressure: -0.2, // here to test it makes positive.
+        preCoilPressure: 0.4,
+        supplyPlenumPressure: 0.1
+      )
+    )
+
+    var sut = envelope.externalStaticPressure
+    XCTAssertEqual(round(sut * 10) / 10, 0.6)
+
+
+    envelope = .airHandler(
+      .init(
+        returnPlenumPressure: -0.2,
+        postFilterPressure: 0.3,
+        postCoilPressure: 0.5,
+        supplyPlenumPressure: 0.3)
+    )
+
+    sut = envelope.externalStaticPressure
+    XCTAssertEqual(round(sut * 10) / 10, 0.5)
+
+  }
+
+  func testExternalStaticPressureReturnsZero() {
+    XCTAssertEqual(
+      EquipmentMeasurement.airHandler(.init()).externalStaticPressure,
+      0
+    )
+    XCTAssertEqual(
+      EquipmentMeasurement.furnaceAndCoil(.init()).externalStaticPressure,
+      0
+    )
+  }
+
+  func testValuesArePositiveOnly() {
+    let sut = Positive<Double>(wrappedValue: -0.1)
+    XCTAssertEqual(sut.positiveValue, 0.1)
+
+    let sut2 = Positive<Double?>(wrappedValue: -0.1)
+    XCTAssertEqual(sut2.positiveValue, 0.1)
+  }
+
+  func testReturnPlenumDimensionsAreaCalculation() {
+    var sut = PlenumDimension.rectangular(width: 24, height: 12)
+    XCTAssertEqual(sut.areaInSquareFeet, 2)
+
+    sut = .round(16)
+    XCTAssertEqual(round(sut.areaInSquareFeet * 100) / 100, 1.4)
+
+  }
+}