chore(tests): Add SeenLog tests for ServiceOwner (#683)

Adding the same test as for EU, verifying user ID hashes length

## Related Issue(s)

- #460

## Verification

- [x] **Your** code builds clean without any errors or warnings
- [x] Manual testing done (required)
- [x] Relevant automated test added (if you find this hard, leave it and
we'll help out)

## Documentation

- [ ] Documentation is updated (either in `docs`-directory, Altinnpedia
or a separate linked PR in
[altinn-studio-docs.](https://github.com/Altinn/altinn-studio-docs), if
applicable)

Author: oskogstad

tests/Digdir.Domain.Dialogporten.Application.Integration.Tests/Features/V1/ServiceOwner/Dialogs/Queries/SeenLogTests.cs

@@ -0,0 +1,121 @@
+using Digdir.Domain.Dialogporten.Application.Common;
+using Digdir.Domain.Dialogporten.Application.Features.V1.ServiceOwner.Dialogs.Queries.Search;
+using Digdir.Domain.Dialogporten.Application.Features.V1.ServiceOwner.DialogSeenLogs.Queries.Get;
+using Digdir.Domain.Dialogporten.Application.Features.V1.ServiceOwner.DialogSeenLogs.Queries.Search;
+using Digdir.Domain.Dialogporten.Application.Integration.Tests.Common;
+using Digdir.Tool.Dialogporten.GenerateFakeData;
+using FluentAssertions;
+using Digdir.Domain.Dialogporten.Application.Features.V1.EndUser.Dialogs.Queries.Get;
+using GetDialogQueryEndUser = Digdir.Domain.Dialogporten.Application.Features.V1.EndUser.Dialogs.Queries.Get.GetDialogQuery;
+using GetDialogQueryServiceOwner = Digdir.Domain.Dialogporten.Application.Features.V1.ServiceOwner.Dialogs.Queries.Get.GetDialogQuery;
+
+namespace Digdir.Domain.Dialogporten.Application.Integration.Tests.Features.V1.ServiceOwner.Dialogs.Queries;
+
+[Collection(nameof(DialogCqrsCollectionFixture))]
+public class SeenLogTests(DialogApplication application) : ApplicationCollectionFixture(application)
+{
+    [Fact]
+    public async Task Get_Dialog_Should_Not_Return_User_Ids_Unhashed()
+    {
+        // Arrange
+        var createDialogCommand = DialogGenerator.GenerateSimpleFakeDialog();
+        var createCommandResponse = await Application.Send(createDialogCommand);
+
+        // Call EndUser API to trigger SeenLog
+        await Application.Send(new GetDialogQueryEndUser { DialogId = createCommandResponse.AsT0.Value });
+
+        // Act
+        var response = await Application.Send(new GetDialogQueryServiceOwner { DialogId = createCommandResponse.AsT0.Value });
+
+        // Assert
+        response.TryPickT0(out var result, out _).Should().BeTrue();
+        result.Should().NotBeNull();
+
+        result.SeenSinceLastUpdate
+            .Single()
+            .EndUserIdHash
+            .Should()
+            .HaveLength(PersistentRandomSaltStringHasher.StringLength);
+    }
+
+    [Fact]
+    public async Task Search_Dialog_Should_Not_Return_User_Ids_Unhashed()
+    {
+        // Arrange
+        var createDialogCommand = DialogGenerator.GenerateSimpleFakeDialog();
+        var createCommandResponse = await Application.Send(createDialogCommand);
+
+        // Trigger SeenLog
+        await Application.Send(new GetDialogQueryEndUser { DialogId = createCommandResponse.AsT0.Value });
+
+        // Act
+        var response = await Application.Send(new SearchDialogQuery
+        {
+            ServiceResource = [createDialogCommand.ServiceResource]
+        });
+
+        // Assert
+        response.TryPickT0(out var result, out _).Should().BeTrue();
+        result.Should().NotBeNull();
+
+        result.Items
+            .Single()
+            .SeenSinceLastUpdate
+            .Single()
+            .EndUserIdHash
+            .Should()
+            .HaveLength(PersistentRandomSaltStringHasher.StringLength);
+    }
+
+    [Fact]
+    public async Task Get_SeenLog_Should_Not_Return_User_Ids_Unhashed()
+    {
+        // Arrange
+        var createDialogCommand = DialogGenerator.GenerateSimpleFakeDialog();
+        var createCommandResponse = await Application.Send(createDialogCommand);
+
+        var triggerSeenLogResponse = await Application.Send(new GetDialogQueryEndUser { DialogId = createCommandResponse.AsT0.Value });
+        var seenLogId = triggerSeenLogResponse.AsT0.SeenSinceLastUpdate.Single().Id;
+
+        // Act
+        var response = await Application.Send(new GetDialogSeenLogQuery
+        {
+            DialogId = createCommandResponse.AsT0.Value,
+            SeenLogId = seenLogId
+        });
+
+        // Assert
+        response.TryPickT0(out var result, out _).Should().BeTrue();
+        result.Should().NotBeNull();
+
+        result.EndUserIdHash
+            .Should()
+            .HaveLength(PersistentRandomSaltStringHasher.StringLength);
+    }
+
+    [Fact]
+    public async Task Search_SeenLog_Should_Not_Return_User_Ids_Unhashed()
+    {
+        // Arrange
+        var createDialogCommand = DialogGenerator.GenerateSimpleFakeDialog();
+        var createCommandResponse = await Application.Send(createDialogCommand);
+
+        // Trigger SeenLog
+        await Application.Send(new GetDialogQueryEndUser { DialogId = createCommandResponse.AsT0.Value });
+
+        // Act
+        var response = await Application.Send(new SearchDialogSeenLogQuery
+        {
+            DialogId = createCommandResponse.AsT0.Value,
+        });
+
+        // Assert
+        response.TryPickT0(out var result, out _).Should().BeTrue();
+        result.Should().NotBeNull();
+
+        result.Single()
+            .EndUserIdHash
+            .Should()
+            .HaveLength(PersistentRandomSaltStringHasher.StringLength);
+    }
+}