public async Task TestEditPersonalityDesctriptionAsync_WithWithDescriptionIdNull_ShouldNotClearThePersonalityDescription() { // Arrange var contextFactory = new ApplicationDbContextFactory(); var context = contextFactory.CreateApplicationDbContext(); var mapperFactory = new AutoMapperFactory(); var mapper = mapperFactory.CreateMapper(); var adminServices = new AdminServices(context, mapper); SeedDbWithUsers(context); // Count: 2 var testApplicationUser = context.Users.FirstOrDefault(); // Take the first user. var userId = testApplicationUser.Id; // Act await adminServices.EditPersonalityDesctriptionAsync(userId, null); var actualDescription = context.Users .FirstOrDefault(user => user.Id == userId) .PersonalityDesctription; // Assert Assert.Equal(expected: null, actual: actualDescription); }