Add user avatar and profile feature, consolidate Auth and UserManagement features (#257)

web/backend/Features/Features.Users.Tests/Commands/UpdateEmailHandlerTests.cs

@@ -0,0 +1,96 @@
+using Domain.Exceptions;
+using Features.Auth.Commands.Account.UpdateEmail;
+using Features.Auth.Dtos;
+using Features.Auth.Identity;
+using Features.Auth.Tests.TestSupport;
+using FluentAssertions;
+using Microsoft.AspNetCore.Identity;
+using Moq;
+
+namespace Features.Auth.Tests.Commands;
+
+public class UpdateEmailHandlerTests
+{
+    private readonly UpdateEmailHandler _handler;
+    private readonly Mock<UserManager<ApplicationUser>> _userManagerMock;
+
+    public UpdateEmailHandlerTests()
+    {
+        _userManagerMock = UserManagerMockFactory.Create();
+        _handler = new UpdateEmailHandler(_userManagerMock.Object);
+    }
+
+    [Fact]
+    public async Task Handle_WithValidRequest_UpdatesEmailAndResetsConfirmation()
+    {
+        Guid userId = Guid.NewGuid();
+        ApplicationUser user = new()
+        {
+            Id = userId,
+            Email = "old@example.com",
+            EmailConfirmed = true,
+        };
+
+        _userManagerMock.Setup(x => x.FindByIdAsync(userId.ToString())).ReturnsAsync(user);
+        _userManagerMock
+            .Setup(x => x.SetEmailAsync(user, "new@example.com"))
+            .Callback<ApplicationUser, string>(
+                (u, e) =>
+                {
+                    u.Email = e;
+                    u.EmailConfirmed = false;
+                }
+            )
+            .ReturnsAsync(IdentityResult.Success);
+
+        UpdateEmailPayload result = await _handler.Handle(
+            new UpdateEmailCommand(userId, "new@example.com"),
+            CancellationToken.None
+        );
+
+        result.UserAccountId.Should().Be(userId);
+        result.Email.Should().Be("new@example.com");
+        result.EmailConfirmed.Should().BeFalse();
+    }
+
+    [Fact]
+    public async Task Handle_WithNonExistentUser_ThrowsNotFoundException()
+    {
+        Guid userId = Guid.NewGuid();
+        _userManagerMock
+            .Setup(x => x.FindByIdAsync(userId.ToString()))
+            .ReturnsAsync((ApplicationUser?)null);
+
+        Func<Task<UpdateEmailPayload>> act = async () =>
+            await _handler.Handle(
+                new UpdateEmailCommand(userId, "new@example.com"),
+                CancellationToken.None
+            );
+
+        await act.Should().ThrowAsync<NotFoundException>();
+    }
+
+    [Fact]
+    public async Task Handle_WithDuplicateEmail_ThrowsConflictException()
+    {
+        Guid userId = Guid.NewGuid();
+        ApplicationUser user = new() { Id = userId, Email = "old@example.com" };
+
+        _userManagerMock.Setup(x => x.FindByIdAsync(userId.ToString())).ReturnsAsync(user);
+        _userManagerMock
+            .Setup(x => x.SetEmailAsync(user, "taken@example.com"))
+            .ReturnsAsync(
+                IdentityResult.Failed(
+                    new IdentityError { Code = "DuplicateEmail", Description = "taken" }
+                )
+            );
+
+        Func<Task<UpdateEmailPayload>> act = async () =>
+            await _handler.Handle(
+                new UpdateEmailCommand(userId, "taken@example.com"),
+                CancellationToken.None
+            );
+
+        await act.Should().ThrowAsync<ConflictException>();
+    }
+}