Feat/get room by ID

src/Application/Rooms/Queries/GetRoomById.cs

@@ -1,5 +1,9 @@
+using Application.Common.Interfaces;
 using Application.Common.Models.Dtos.Physical;
+using AutoMapper;
+using FluentValidation;
 using MediatR;
+using Microsoft.EntityFrameworkCore;
 
 namespace Application.Rooms.Queries;
 
@@ -9,4 +13,29 @@ public record Query : IRequest<RoomDto>
  {
  public Guid RoomId { get; init; }
  }
+
+ public class QueryHandler : IRequestHandler<Query, RoomDto>
+ {
+ private readonly IApplicationDbContext _context;
+ private readonly IMapper _mapper;
+
+ public QueryHandler(IApplicationDbContext context, IMapper mapper)
+ {
+ _context = context;
+ _mapper = mapper;
+ }
+
+ public async Task<RoomDto> Handle(Query request, CancellationToken cancellationToken)
+ {
+ var room = await _context.Rooms
+ .FirstOrDefaultAsync(x => x.Id.Equals(request.RoomId), cancellationToken: cancellationToken);
+
+ if (room is null)
+ {
+ throw new KeyNotFoundException("Room does not exist.");
+ }
+
+ return _mapper.Map<RoomDto>(room);
+ }
+ }
 }

tests/Application.Tests.Integration/Rooms/Queries/GetRoomByIdTests.cs

@@ -0,0 +1,55 @@
+using Application.Rooms.Queries;
+using Domain.Entities;
+using FluentAssertions;
+using Xunit;
+
+namespace Application.Tests.Integration.Rooms.Queries;
+
+public class GetRoomByIdTests : BaseClassFixture
+{
+ public GetRoomByIdTests(CustomApiFactory apiFactory) : base(apiFactory)
+ {
+ }
+
+ [Fact]
+ public async Task ShouldReturnRoom_WhenThatRoomExists()
+ {
+ // Arrange
+ var department = CreateDepartment();
+ var room = CreateRoom(department);
+ await AddAsync(room);
+
+ var query = new GetRoomById.Query()
+ {
+ RoomId = room.Id,
+ };
+
+ // Act
+ var result = await SendAsync(query);
+
+ // Assert
+ result.Id.Should().Be(room.Id);
+ result.Name.Should().Be(room.Name);
+
+ // Cleanup
+ Remove(room);
+ Remove(await FindAsync<Department>(department.Id));
+ }
+
+ [Fact]
+ public async Task ShouldThrowKeyNotFoundException_WhenThatRoomDoesNotExist()
+ {
+ // Arrange
+ var query = new GetRoomById.Query()
+ {
+ RoomId = Guid.NewGuid(),
+ };
+
+ // Act
+ var action = async () => await SendAsync(query);
+
+ // Assert
+ await action.Should().ThrowAsync<KeyNotFoundException>()
+ .WithMessage("Room does not exist.");
+ }
+}