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Themis/Extensions/ParticipationExtension.swift

@@ -16,8 +16,13 @@ extension BaseParticipation {
     }
 
     /// A convenience function that casts this BaseParticipation instance into a ProgrammingExerciseStudentParticipation and sets its exercise property
-    func setProgrammingExercise(_ exercise: Exercise) {
-        (self as? ProgrammingExerciseStudentParticipation)?.exercise = exercise
+    mutating func setProgrammingExercise(_ exercise: Exercise) {
+        // TODO: I think this works, but please test!!!
+        if var programmingParticipation = self as? ProgrammingExerciseStudentParticipation {
+            programmingParticipation.exercise = exercise
+            // swiftlint:disable:next force_cast
+            self = programmingParticipation as! Self
+        }
     }
 
     /// A convenience function that casts this BaseParticipation instance into a ProgrammingExerciseStudentParticipation and returns the participation id for the given repository type

Themis/REST/RESTController.swift

@@ -9,7 +9,7 @@ import Foundation
 import UserStore
 
 class RESTController {
-    static var shared = RESTController(baseURL: (UserSession.shared.institution?.baseURL ?? URL(string: "https://artemis.ase.cit.tum.de/")!))
+    static var shared = RESTController(baseURL: (UserSessionFactory.shared.institution?.baseURL ?? URL(string: "https://artemis.ase.cit.tum.de/")!))
 
     var baseURL: URL
 

Themis/Services/Repository/RepositoryService.swift

@@ -16,6 +16,7 @@ protocol RepositoryService {
     func getFileOfRepository(participationId: Int, filePath: String) async throws -> String
 }
 
-enum RepositoryServiceFactory {
-    static let shared: RepositoryService = RepositoryServiceImpl()
+enum RepositoryServiceFactory: DependencyFactory {
+    static let liveValue: RepositoryService = RepositoryServiceImpl()
+    static let testValue: RepositoryService = RepositoryServiceStub()
 }

Themis/Services/Repository/RepositoryServiceStub.swift

@@ -0,0 +1,68 @@
+//
+//  RepositoryServiceStub.swift
+//  Themis
+//
+//  Created by Anian Schleyer on 09.06.24.
+//
+
+import SharedModels
+
+class RepositoryServiceStub: RepositoryService {
+    func getFileNamesOfRepository(participationId: Int) async throws -> [String: FileType] {
+        [
+            "code.swift": .file,
+            "assets": .folder
+        ]
+    }
+
+    func getFileOfRepository(participationId: Int, filePath: String) async throws -> String {
+        // Using code from ThemisButtonStyle.swift as example
+        """
+        //
+        //  ThemisButtonStyle.swift
+        //  Themis
+        //
+        //  Created by Andreas Cselovszky on 10.01.23.
+        //
+
+        import SwiftUI
+
+        struct ThemisButtonStyle: ButtonStyle {
+            @Environment(\\.isEnabled) var isEnabled: Bool
+            var color = Color.themisSecondary
+            var iconImageName: String?
+            var horizontalPadding: CGFloat = 15
+            var verticalPadding: CGFloat = 8
+
+            func makeBody(configuration: Configuration) -> some View {
+                HStack {
+                    if let iconImageName {
+                        Image(iconImageName)
+                            .resizable()
+                            .aspectRatio(contentMode: .fill)
+                            .frame(width: 14, height: 6)
+                            .foregroundColor(.white)
+                    }
+
+                    configuration.label
+                }
+                .foregroundColor(Color(.systemBackground))
+                .padding(.horizontal, horizontalPadding)
+                .padding(.vertical, verticalPadding)
+                .background(isEnabled ? color : Color(.systemGray))
+                .cornerRadius(5)
+                .fontWeight(.semibold)
+                .scaleEffect(configuration.isPressed ? 1.1 : 1)
+                .animation(.easeOut(duration: 0.2), value: configuration.isPressed)
+            }
+        }
+
+        struct NavigationBarButtonStyle_Previews: PreviewProvider {
+            static var previews: some View {
+                Button("Save", action: {})
+                    .buttonStyle(ThemisButtonStyle(iconImageName: "saveIcon"))
+            }
+        }
+        """
+    }
+}

Themis/Services/Submission/Programming/ProgrammingSubmissionService.swift

@@ -0,0 +1,13 @@
+//
+//  ProgrammingSubmissionService.swift
+//  Themis
+//
+//  Created by Anian Schleyer on 09.06.24.
+//
+
+import Common
+
+enum ProgrammingSubmissionServiceFactory: DependencyFactory {
+    static let liveValue: any SubmissionService = ProgrammingSubmissionServiceImpl()
+    static let testValue: any SubmissionService = ProgrammingSubmissionServiceStub()
+}

Themis/Services/Submission/Programming/ProgrammingSubmissionServiceStub.swift

@@ -0,0 +1,28 @@
+//
+//  ProgrammingSubmissionServiceStub.swift
+//  Themis
+//
+//  Created by Anian Schleyer on 09.06.24.
+//
+
+import SharedModels
+
+class ProgrammingSubmissionServiceStub: SubmissionService {
+    func getAllSubmissions(exerciseId: Int) async throws -> [Submission] {
+        [.programming(submission: .mock)]
+    }
+
+    func getTutorSubmissions(exerciseId: Int, correctionRound: CorrectionRound) async throws -> [Submission] {
+        [.programming(submission: .mock)]
+    }
+
+    func getRandomSubmissionForAssessment(exerciseId: Int, correctionRound: CorrectionRound) async throws -> ProgrammingSubmission {
+        .mock
+    }
+
+    func getSubmissionForAssessment(submissionId: Int, correctionRound: CorrectionRound) async throws -> ProgrammingSubmission {
+        .mock
+    }
+
+    typealias SubmissionType = ProgrammingSubmission
+}

Themis/Services/Submission/SubmissionService.swift

@@ -45,7 +45,7 @@ enum SubmissionServiceFactory {
     static func service(for exercise: Exercise) -> any SubmissionService {
         switch exercise {
         case .programming:
-            return ProgrammingSubmissionServiceImpl()
+            return ProgrammingSubmissionServiceFactory.shared
         case .text:
             return TextSubmissionServiceImpl()
         case .modeling:

Themis/ViewModels/Assessment/AssessmentViewModel.swift

@@ -235,19 +235,19 @@ enum AssessmentViewModelFactory {
                                     readOnly: Bool) -> AssessmentViewModel {
         switch exercise {
         case .programming:
-            return ProgrammingAssessmentViewModel(exercise: exercise,
+            return ProgrammingAssessmentViewModelFactory(exercise: exercise,
+                                                         submissionId: submissionId,
+                                                         participationId: participationId,
+                                                         resultId: resultId,
+                                                         correctionRound: correctionRound,
+                                                         readOnly: readOnly).shared
+        case .text:
+            return TextAssessmentViewModelFactory(exercise: exercise,
                                                   submissionId: submissionId,
                                                   participationId: participationId,
                                                   resultId: resultId,
                                                   correctionRound: correctionRound,
-                                                  readOnly: readOnly)
-        case .text:
-            return TextAssessmentViewModel(exercise: exercise,
-                                           submissionId: submissionId,
-                                           participationId: participationId,
-                                           resultId: resultId,
-                                           correctionRound: correctionRound,
-                                           readOnly: readOnly)
+                                                  readOnly: readOnly).shared
         case .modeling:
             return ModelingAssessmentViewModel(exercise: exercise,
                                                submissionId: submissionId,

Themis/ViewModels/Assessment/File Upload/FileRendererViewModel.swift

@@ -24,7 +24,7 @@ class FileRendererViewModel: ExerciseRendererViewModel {
     @MainActor
     func setup(basedOn submission: BaseSubmission? = nil) async {
         guard let fileUploadSubmission = submission as? FileUploadSubmission,
-              let baseUrl = UserSession.shared.institution?.baseURL?.absoluteString,
+              let baseUrl = UserSessionFactory.shared.institution?.baseURL?.absoluteString,
               let filePath = fileUploadSubmission.filePath?.dropFirst(),
               let remoteFileUrl = URL(string: "\(baseUrl)\(filePath)") else {
             log.error("Setup failed")

Themis/ViewModels/Assessment/Programming/ProgrammingAssessmentViewModel.swift

@@ -2,78 +2,40 @@
 //  ProgrammingAssessmentViewModel.swift
 //  Themis
 //
-//  Created by Tarlan Ismayilsoy on 29.07.23.
+//  Created by Anian Schleyer on 09.06.24.
 //
 
-import Foundation
 import Common
 import SharedModels
 
-class ProgrammingAssessmentViewModel: AssessmentViewModel {
-    @MainActor
-    override func initSubmission() async {
-        guard submission == nil else {
-            return
-        }
-
-        if readOnly {
-            if let participationId {
-                await getReadOnlySubmission(participationId: participationId)
-            } else {
-                self.error = UserFacingError.participationNotFound
-                log.error("Could not find participation for programming exercise: \(exercise.baseExercise.title ?? "")")
-            }
-        } else {
-            if let submissionId {
-                await getSubmission(submissionId: submissionId)
-            } else {
-                await initRandomSubmission()
-            }
-        }
-
-        ThemisUndoManager.shared.removeAllActions()
-    }
-
-    @MainActor
-    override func getReadOnlySubmission(participationId: Int) async {
-        guard readOnly else {
-            self.error = UserFacingError.unknown
-            log.error("This function should only be called for read-only mode")
-            return
-        }
-
-        loading = true
-        defer {
-            loading = false
-        }
-
-        let submissionService = SubmissionServiceFactory.service(for: exercise)
-
-        do {
-            let result = try await submissionService.getResultFor(participationId: participationId)
-            self.submission = result.submission?.baseSubmission
-            self.participation = result.participation?.baseParticipation
-            assessmentResult.setComputedFeedbacks(basedOn: result.feedbacks ?? [])
-
-            if let exerciseId = participation?.exercise?.id {
-                let exerciseWithTemplateAndSolution = try await ExerciseHelperService()
-                    .getProgrammingExerciseWithTemplateAndSolutionParticipations(exerciseId: exerciseId)
-                self.participation?.setProgrammingExercise(exerciseWithTemplateAndSolution)
-            }
-        } catch {
-            self.error = error
-            log.error(String(describing: error))
-        }
+protocol ProgrammingAssessmentViewModel {
+    func participationId(for repoType: RepositoryType) -> Int?
+}
+
+struct ProgrammingAssessmentViewModelFactory: DependencyFactory {
+    init(exercise: Exercise, submissionId: Int?, participationId: Int?, resultId: Int?, correctionRound: CorrectionRound, readOnly: Bool) {
+        Self.liveValue = ProgrammingAssessmentViewModelImpl(
+            exercise: exercise,
+            submissionId: submissionId,
+            participationId: participationId,
+            resultId: resultId,
+            correctionRound: correctionRound,
+            readOnly: readOnly
+        )
+        Self.testValue = ProgrammingAssessmentViewModelStub(
+            exercise: exercise,
+            submissionId: submissionId,
+            participationId: participationId,
+            resultId: resultId,
+            correctionRound: correctionRound,
+            readOnly: readOnly
+        )
     }
 
-    func participationId(for repoType: RepositoryType) -> Int? {
-        switch repoType {
-        case .student:
-            return participation?.id
-        case .solution:
-            return participation?.getExercise(as: ProgrammingExercise.self)?.solutionParticipation?.id
-        case .template:
-            return participation?.getExercise(as: ProgrammingExercise.self)?.templateParticipation?.id
-        }
+    var shared: AssessmentViewModel {
+        Self.shared
     }
+
+    static var liveValue: AssessmentViewModel = ProgrammingAssessmentViewModelImpl(exercise: .mockText, correctionRound: .first, readOnly: true)
+    static var testValue: AssessmentViewModel = ProgrammingAssessmentViewModelImpl(exercise: .mockText, correctionRound: .first, readOnly: true)
 }

Themis/ViewModels/Assessment/Programming/ProgrammingAssessmentViewModelImpl.swift

@@ -0,0 +1,79 @@
+//
+//  ProgrammingAssessmentViewModelImpl.swift
+//  Themis
+//
+//  Created by Tarlan Ismayilsoy on 29.07.23.
+//
+
+import Foundation
+import Common
+import SharedModels
+
+class ProgrammingAssessmentViewModelImpl: AssessmentViewModel, ProgrammingAssessmentViewModel {
+    @MainActor
+    override func initSubmission() async {
+        guard submission == nil else {
+            return
+        }
+
+        if readOnly {
+            if let participationId {
+                await getReadOnlySubmission(participationId: participationId)
+            } else {
+                self.error = UserFacingError.participationNotFound
+                log.error("Could not find participation for programming exercise: \(exercise.baseExercise.title ?? "")")
+            }
+        } else {
+            if let submissionId {
+                await getSubmission(submissionId: submissionId)
+            } else {
+                await initRandomSubmission()
+            }
+        }
+
+        ThemisUndoManager.shared.removeAllActions()
+    }
+
+    @MainActor
+    override func getReadOnlySubmission(participationId: Int) async {
+        guard readOnly else {
+            self.error = UserFacingError.unknown
+            log.error("This function should only be called for read-only mode")
+            return
+        }
+
+        loading = true
+        defer {
+            loading = false
+        }
+
+        let submissionService = SubmissionServiceFactory.service(for: exercise)
+
+        do {
+            let result = try await submissionService.getResultFor(participationId: participationId)
+            self.submission = result.submission?.baseSubmission
+            self.participation = result.participation?.baseParticipation
+            assessmentResult.setComputedFeedbacks(basedOn: result.feedbacks ?? [])
+
+            if let exerciseId = participation?.exercise?.id {
+                let exerciseWithTemplateAndSolution = try await ExerciseHelperService()
+                    .getProgrammingExerciseWithTemplateAndSolutionParticipations(exerciseId: exerciseId)
+                self.participation?.setProgrammingExercise(exerciseWithTemplateAndSolution)
+            }
+        } catch {
+            self.error = error
+            log.error(String(describing: error))
+        }
+    }
+
+    func participationId(for repoType: RepositoryType) -> Int? {
+        switch repoType {
+        case .student:
+            return participation?.id
+        case .solution:
+            return participation?.getExercise(as: ProgrammingExercise.self)?.solutionParticipation?.id
+        case .template:
+            return participation?.getExercise(as: ProgrammingExercise.self)?.templateParticipation?.id
+        }
+    }
+}