feat(11-04): add logo management commands to SettingsViewModel and ProfileManagementViewModel

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

SharepointToolbox.Tests/ViewModels/ProfileManagementViewModelLogoTests.cs

@@ -0,0 +1,118 @@
+using System.IO;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Abstractions;
+using Moq;
+using SharepointToolbox.Core.Models;
+using SharepointToolbox.Infrastructure.Auth;
+using SharepointToolbox.Infrastructure.Persistence;
+using SharepointToolbox.Services;
+using SharepointToolbox.ViewModels;
+
+namespace SharepointToolbox.Tests.ViewModels;
+
+[Trait("Category", "Unit")]
+public class ProfileManagementViewModelLogoTests : IDisposable
+{
+    private readonly string _tempFile;
+    private readonly Mock<IBrandingService> _mockBranding;
+    private readonly GraphClientFactory _graphClientFactory;
+    private readonly ILogger<ProfileManagementViewModel> _logger;
+
+    public ProfileManagementViewModelLogoTests()
+    {
+        _tempFile = Path.GetTempFileName();
+        File.Delete(_tempFile);
+        _mockBranding = new Mock<IBrandingService>();
+        _graphClientFactory = new GraphClientFactory(new MsalClientFactory());
+        _logger = NullLogger<ProfileManagementViewModel>.Instance;
+    }
+
+    public void Dispose()
+    {
+        if (File.Exists(_tempFile)) File.Delete(_tempFile);
+        if (File.Exists(_tempFile + ".tmp")) File.Delete(_tempFile + ".tmp");
+    }
+
+    private ProfileManagementViewModel CreateViewModel()
+    {
+        var profileService = new ProfileService(new ProfileRepository(_tempFile));
+        return new ProfileManagementViewModel(
+            profileService,
+            _mockBranding.Object,
+            _graphClientFactory,
+            _logger);
+    }
+
+    [Fact]
+    public void Constructor_BrowseClientLogoCommand_IsNotNull()
+    {
+        var vm = CreateViewModel();
+        Assert.NotNull(vm.BrowseClientLogoCommand);
+    }
+
+    [Fact]
+    public void Constructor_ClearClientLogoCommand_IsNotNull()
+    {
+        var vm = CreateViewModel();
+        Assert.NotNull(vm.ClearClientLogoCommand);
+    }
+
+    [Fact]
+    public void Constructor_AutoPullClientLogoCommand_IsNotNull()
+    {
+        var vm = CreateViewModel();
+        Assert.NotNull(vm.AutoPullClientLogoCommand);
+    }
+
+    [Fact]
+    public void BrowseClientLogoCommand_CannotExecute_WhenNoProfileSelected()
+    {
+        var vm = CreateViewModel();
+        Assert.False(vm.BrowseClientLogoCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public void ClearClientLogoCommand_CannotExecute_WhenNoProfileSelected()
+    {
+        var vm = CreateViewModel();
+        Assert.False(vm.ClearClientLogoCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public void AutoPullClientLogoCommand_CannotExecute_WhenNoProfileSelected()
+    {
+        var vm = CreateViewModel();
+        Assert.False(vm.AutoPullClientLogoCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public async Task ClearClientLogoCommand_ClearsClientLogo_AndPersists()
+    {
+        var profileService = new ProfileService(new ProfileRepository(_tempFile));
+        var profile = new TenantProfile
+        {
+            Name = "TestTenant",
+            TenantUrl = "https://test.sharepoint.com",
+            ClientId = "00000000-0000-0000-0000-000000000001",
+            ClientLogo = new LogoData { Base64 = "dGVzdA==", MimeType = "image/png" }
+        };
+        await profileService.AddProfileAsync(profile);
+
+        var vm = new ProfileManagementViewModel(
+            profileService,
+            _mockBranding.Object,
+            _graphClientFactory,
+            _logger);
+
+        vm.SelectedProfile = profile;
+
+        await vm.ClearClientLogoCommand.ExecuteAsync(null);
+
+        Assert.Null(profile.ClientLogo);
+
+        // Verify persisted
+        var profiles = await profileService.GetProfilesAsync();
+        var persisted = profiles.First(p => p.Name == "TestTenant");
+        Assert.Null(persisted.ClientLogo);
+    }
+}