public async Task WhenRetrievingEntities_ThenAllEntitiesShouldBeReturned() { _repositoryMock.Setup(x => x.GetAsync()) .ReturnsAsync(new List <Order> { _mapper.Map <Order>(Orders.Order1), _mapper.Map <Order>(Orders.Order2) }); var handler = new GetOrdersHandler(_repositoryMock.Object); var result = await handler.Handle(new GetOrders(), default); Assert.Collection(result, c => Assert.Equal(OrderViews.Order1.Id, c.Id), c => Assert.Equal(OrderViews.Order2.Id, c.Id)); }