In progress

colaflow-api/tests/ColaFlow.Application.Tests/Commands/DeleteStory/DeleteStoryCommandHandlerTests.cs

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+using FluentAssertions;
+using Moq;
+using ColaFlow.Modules.ProjectManagement.Application.Commands.DeleteStory;
+using ColaFlow.Modules.ProjectManagement.Domain.Aggregates.ProjectAggregate;
+using ColaFlow.Modules.ProjectManagement.Domain.Repositories;
+using ColaFlow.Modules.ProjectManagement.Domain.ValueObjects;
+using ColaFlow.Modules.ProjectManagement.Domain.Exceptions;
+
+namespace ColaFlow.Application.Tests.Commands.DeleteStory;
+
+public class DeleteStoryCommandHandlerTests
+{
+    private readonly Mock<IProjectRepository> _projectRepositoryMock;
+    private readonly Mock<IUnitOfWork> _unitOfWorkMock;
+    private readonly DeleteStoryCommandHandler _handler;
+
+    public DeleteStoryCommandHandlerTests()
+    {
+        _projectRepositoryMock = new Mock<IProjectRepository>();
+        _unitOfWorkMock = new Mock<IUnitOfWork>();
+        _handler = new DeleteStoryCommandHandler(_projectRepositoryMock.Object, _unitOfWorkMock.Object);
+    }
+
+    [Fact]
+    public async Task Should_Delete_Story_Successfully()
+    {
+        // Arrange
+        var userId = UserId.Create();
+        var project = Project.Create("Test Project", "Description", "TST", userId);
+        var epic = project.CreateEpic("Test Epic", "Epic Description", userId);
+        var story = epic.CreateStory("Story to Delete", "Description", TaskPriority.Medium, userId);
+        var storyId = story.Id;
+
+        _projectRepositoryMock
+            .Setup(x => x.GetProjectWithStoryAsync(storyId, It.IsAny<CancellationToken>()))
+            .ReturnsAsync(project);
+
+        var command = new DeleteStoryCommand { StoryId = storyId.Value };
+
+        // Act
+        await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        epic.Stories.Should().BeEmpty();
+        _projectRepositoryMock.Verify(x => x.Update(project), Times.Once);
+        _unitOfWorkMock.Verify(x => x.SaveChangesAsync(It.IsAny<CancellationToken>()), Times.Once);
+    }
+
+    [Fact]
+    public async Task Should_Fail_When_Story_Not_Found()
+    {
+        // Arrange
+        var storyId = StoryId.Create();
+        _projectRepositoryMock
+            .Setup(x => x.GetProjectWithStoryAsync(storyId, It.IsAny<CancellationToken>()))
+            .ReturnsAsync((Project?)null);
+
+        var command = new DeleteStoryCommand { StoryId = storyId.Value };
+
+        // Act
+        Func<Task> act = async () => await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        await act.Should().ThrowAsync<NotFoundException>()
+            .WithMessage("*Story*");
+    }
+
+    [Fact]
+    public async Task Should_Fail_When_Story_Has_Tasks()
+    {
+        // Arrange
+        var userId = UserId.Create();
+        var project = Project.Create("Test Project", "Description", "TST", userId);
+        var epic = project.CreateEpic("Test Epic", "Epic Description", userId);
+        var story = epic.CreateStory("Story with Tasks", "Description", TaskPriority.Medium, userId);
+
+        // Add a task to the story
+        story.CreateTask("Task 1", "Task Description", TaskPriority.High, userId);
+
+        _projectRepositoryMock
+            .Setup(x => x.GetProjectWithStoryAsync(story.Id, It.IsAny<CancellationToken>()))
+            .ReturnsAsync(project);
+
+        var command = new DeleteStoryCommand { StoryId = story.Id.Value };
+
+        // Act
+        Func<Task> act = async () => await _handler.Handle(command, CancellationToken.None);
+
+        // Assert
+        await act.Should().ThrowAsync<DomainException>()
+            .WithMessage("*cannot delete*story*tasks*");
+    }
+}