Initial code commit.

Sufi.Demo.PeopleDirectory.UnitTests/Contacts/GetContactByIdQueryHandlerTests.cs

@@ -0,0 +1,84 @@
+using AutoMapper;
+using Moq;
+using Sufi.Demo.PeopleDirectory.Application.Contracts.Repositories;
+using Sufi.Demo.PeopleDirectory.Application.Contracts.Services;
+using Sufi.Demo.PeopleDirectory.Application.Features.Contacts.Queries.GetById;
+using Sufi.Demo.PeopleDirectory.Domain.Entities.Misc;
+
+namespace Sufi.Demo.PeopleDirectory.UnitTests.Contacts
+{
+    public class GetContactByIdQueryHandlerTests
+    {
+        private readonly Mock<IUnitOfWork<int>> _unitOfWorkMock;
+        private readonly Mock<IMapper> _mapperMock;
+		private readonly Mock<IAppCache> _appCacheMock = new();
+		private readonly GetContactByIdQueryHandler _handler;
+
+        public GetContactByIdQueryHandlerTests()
+        {
+            _unitOfWorkMock = new Mock<IUnitOfWork<int>>();
+            _mapperMock = new Mock<IMapper>();
+            _handler = new GetContactByIdQueryHandler(_unitOfWorkMock.Object, _mapperMock.Object, _appCacheMock.Object);
+        }
+
+        [Fact]
+        public async Task Handle_ReturnsMappedContact_WhenContactExists()
+        {
+            // Arrange
+            var contact = new Contact
+            {
+                Id = 1,
+                UserName = "User1",
+                Phone = "123",
+                Email = "user1@example.com",
+                SkillSets = "C#",
+                Hobby = "Reading"
+            };
+            var mappedContact = new GetContactByIdResponse
+            {
+                Id = 1,
+                UserName = "User1",
+                Phone = "123",
+                Email = "user1@example.com",
+                SkillSets = "C#",
+                Hobby = "Reading"
+            };
+
+            _unitOfWorkMock.Setup(u => u.Repository<Contact>().GetByIdAsync(1)).ReturnsAsync(contact);
+            _mapperMock.Setup(m => m.Map<GetContactByIdResponse>(contact)).Returns(mappedContact);
+            _appCacheMock.Setup(c => c.GetOrAddAsync(It.IsAny<string>(), It.IsAny<Func<CancellationToken, ValueTask<Contact>>>(), It.IsAny<IEnumerable<string>>(), It.IsAny<TimeSpan?>()))
+                .ReturnsAsync(contact);
+
+			var query = new GetContactByIdQuery { Id = 1 };
+
+            // Act
+            var result = await _handler.Handle(query, CancellationToken.None);
+
+            // Assert
+            Assert.True(result.Succeeded);
+            Assert.NotNull(result.Data);
+            Assert.Equal(1, result.Data.Id);
+            Assert.Equal("User1", result.Data.UserName);
+        }
+
+        [Fact]
+        public async Task Handle_ReturnsNull_WhenContactDoesNotExist()
+        {
+            // Arrange
+            Contact? contact = null;
+            GetContactByIdResponse? mappedContact = null;
+
+            _unitOfWorkMock.Setup(u => u.Repository<Contact>().GetByIdAsync(99)).ReturnsAsync(contact);
+            _mapperMock.Setup(m => m.Map<GetContactByIdResponse>(contact)).Returns(mappedContact);
+
+            var query = new GetContactByIdQuery { Id = 99 };
+
+            // Act
+            var result = await _handler.Handle(query, CancellationToken.None);
+
+            // Assert
+            Assert.True(result.Succeeded);
+            Assert.Null(result.Data);
+        }
+    }
+}