chore: add UI integration test (#33)

* add integration test app

* make face liveness session extendable

* add UI integration test

* remove unused code

* fix build issue

* test: fix failed test

Author: phantumcode

Diff for: .gitignore

@@ -13,12 +13,26 @@ HostApp/dist/
 HostApp/node_modules/
 HostApp/generated-src/
 HostApp/aws-exports.js
-HostApp/.gitignore
 HostApp/awsconfiguration.json
 HostApp/amplifyconfiguration.json
 HostApp/amplifyconfiguration.dart
 HostApp/amplify-build-config.json
 HostApp/amplify-gradle-config.json
 HostApp/amplifytools.xcconfig
 HostApp/.secret-*
-HostApp/**.sample
+HostApp/**.sample
+Tests/IntegrationTestApp/amplify/
+Tests/IntegrationTestApp/build/
+Tests/IntegrationTestApp/dist/
+Tests/IntegrationTestApp/node_modules/
+Tests/IntegrationTestApp/generated-src/
+Tests/IntegrationTestApp/aws-exports.js
+Tests/IntegrationTestApp/awsconfiguration.json
+Tests/IntegrationTestApp/amplifyconfiguration.json
+Tests/IntegrationTestApp/amplifyconfiguration.dart
+Tests/IntegrationTestApp/amplify-build-config.json
+Tests/IntegrationTestApp/amplify-gradle-config.json
+Tests/IntegrationTestApp/amplifytools.xcconfig
+Tests/IntegrationTestApp/.secret-*
+Tests/IntegrationTestApp/**.sample
+Tests/IntegrationTestApp/*.xcodeproj

Diff for: Sources/FaceLiveness/AV/LivenessCaptureSession.swift

@@ -8,18 +8,18 @@
 import UIKit
 import AVFoundation
 
-final class LivenessCaptureSession {
+class LivenessCaptureSession {
     let captureDevice: LivenessCaptureDevice
     private let captureQueue = DispatchQueue(label: "com.amazonaws.faceliveness.cameracapturequeue")
-    private let outputDelegate: OutputSampleBufferCapturer
-    private var captureSession: AVCaptureSession?
+    let outputDelegate: OutputSampleBufferCapturer
+    var captureSession: AVCaptureSession?
 
     init(captureDevice: LivenessCaptureDevice, outputDelegate: OutputSampleBufferCapturer) {
         self.captureDevice = captureDevice
         self.outputDelegate = outputDelegate
     }
 
-    func startSession(frame: CGRect) throws -> AVCaptureVideoPreviewLayer {
+    func startSession(frame: CGRect) throws -> CALayer {
         guard let camera = captureDevice.avCaptureDevice
         else { throw LivenessCaptureSessionError.cameraUnavailable }
 

Diff for: Sources/FaceLiveness/Views/Liveness/FaceLivenessDetectionView.swift

@@ -83,6 +83,46 @@ public struct FaceLivenessDetectorView: View {
             )
         )
     }
+    
+    init(
+        sessionID: String,
+        credentialsProvider: AWSCredentialsProvider? = nil,
+        region: String,
+        disableStartView: Bool = false,
+        isPresented: Binding<Bool>,
+        onCompletion: @escaping (Result<Void, FaceLivenessDetectionError>) -> Void,
+        captureSession: LivenessCaptureSession
+    ) {
+        self.disableStartView = disableStartView
+        self._isPresented = isPresented
+        self.onCompletion = onCompletion
+
+        self.sessionTask = Task {
+            let session = try await AWSPredictionsPlugin.startFaceLivenessSession(
+                withID: sessionID,
+                credentialsProvider: credentialsProvider,
+                region: region,
+                options: .init(),
+                completion: map(detectionCompletion: onCompletion)
+            )
+            return session
+        }
+
+        let faceInOvalStateMatching = FaceInOvalMatching(
+            instructor: Instructor()
+        )
+
+        self._viewModel = StateObject(
+            wrappedValue: .init(
+                faceDetector: captureSession.outputDelegate.faceDetector,
+                faceInOvalMatching: faceInOvalStateMatching,
+                captureSession: captureSession,
+                videoChunker: captureSession.outputDelegate.videoChunker,
+                closeButtonAction: { onCompletion(.failure(.userCancelled)) },
+                sessionID: sessionID
+            )
+        )
+    }
 
     public var body: some View {
         switch displayState {
@@ -204,7 +244,7 @@ enum InstructionState {
     case display(text: String)
 }
 
-fileprivate func map(detectionCompletion: @escaping (Result<Void, FaceLivenessDetectionError>) -> Void) -> ((Result<Void, FaceLivenessSessionError>) -> Void) {
+private func map(detectionCompletion: @escaping (Result<Void, FaceLivenessDetectionError>) -> Void) -> ((Result<Void, FaceLivenessSessionError>) -> Void) {
     { result in
         switch result {
         case .success:

Diff for: Sources/FaceLiveness/Views/Liveness/FaceLivenessDetectionViewModel.swift

@@ -117,11 +117,9 @@ class FaceLivenessDetectionViewModel: ObservableObject {
         captureSession.stopRunning()
     }
 
-    func startCamera(withinFrame frame: CGRect) -> AVCaptureVideoPreviewLayer? {
+    func startCamera(withinFrame frame: CGRect) -> CALayer? {
         do {
             let avLayer = try captureSession.startSession(frame: frame)
-            avLayer.frame = frame
-            layerRectConverted = avLayer.layerRectConverted(fromMetadataOutputRect:)
             DispatchQueue.main.async {
                 self.livenessState.checkIsFacePrepared()
             }

Diff for: Sources/FaceLiveness/Views/Liveness/LivenessViewController.swift

@@ -13,7 +13,7 @@ import Amplify
 
 final class _LivenessViewController: UIViewController {
     let viewModel: FaceLivenessDetectionViewModel
-    var previewLayer: AVCaptureVideoPreviewLayer!
+    var previewLayer: CALayer!
 
     let faceShapeLayer = CAShapeLayer()
     var ovalExists = false
@@ -86,13 +86,6 @@ final class _LivenessViewController: UIViewController {
         }
     }
 
-
-
-    func convert(rect: CGRect) -> CGRect {
-        let box = previewLayer.layerRectConverted(fromMetadataOutputRect: rect)
-        return box
-    }
-
     var runningFreshness = false
     var hasSentClientInformationEvent = false
     var challengeID = UUID().uuidString