Сборка бэк

backend/Tests/Admin/UnitTests/ResetUserPasswordCommandHandlerTests.cs

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+using FluentAssertions;
+using Knot.Modules.Admin.Application.Admin.Commands;
+using Knot.Modules.Auth.Application.Abstractions;
+using Knot.Modules.Auth.Domain;
+using Knot.Shared.Kernel;
+using NSubstitute;
+using Xunit;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Knot.Modules.Admin.UnitTests;
+
+public class ResetUserPasswordCommandHandlerTests
+{
+    private readonly IAuthUnitOfWork _authUnitOfWork;
+    private readonly IUserRepository _userRepository;
+    private readonly ResetUserPasswordCommandHandler _handler;
+
+    public ResetUserPasswordCommandHandlerTests()
+    {
+        _authUnitOfWork = Substitute.For<IAuthUnitOfWork>();
+        _userRepository = Substitute.For<IUserRepository>();
+        _handler = new ResetUserPasswordCommandHandler(_userRepository, _authUnitOfWork);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldReturnError_WhenUserNotFound()
+    {
+        // Arrange
+        var command = new ResetUserPasswordCommand(Guid.NewGuid(), "NewP@ssw0rd");
+        _userRepository.GetByIdAsync(command.UserId, Arg.Any<CancellationToken>()).Returns((User?)null);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsFailure.Should().BeTrue();
+        result.Error.Should().Be(AuthErrors.UserNotFound);
+    }
+
+    [Fact]
+    public async Task Handle_ShouldSucceed_WhenUserFound()
+    {
+        // Arrange
+        var user = User.Create("User", "pass", "salt", "admin");
+        var command = new ResetUserPasswordCommand(user.Id, "NewP@ssw0rd");
+        
+        _userRepository.GetByIdAsync(command.UserId, Arg.Any<CancellationToken>()).Returns(user);
+
+        // Act
+        var result = await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        result.IsSuccess.Should().BeTrue();
+        await _authUnitOfWork.Received(1).SaveChangesAsync(Arg.Any<CancellationToken>());
+    }
+}