AutoMapperMappingException-缺少类型映射配置或不受支持的映射
本文关键字:映射 支持 配置 类型 AutoMapperMappingException- | 更新日期: 2023-09-27 17:58:27
当我在代码中实现IReadOnlyList
时,我的单元测试抛出了一个AutoMapperMappingException
。
通过对文章和文档的深入研究,我猜测AutoMapper需要对readonly
类型进行特殊编码。这会是什么样子?
注意:我按照另一篇帖子的建议尝试了Mapper.AssertConfigurationIsValid();
,但没有任何改进。
测试名称:CreateOrder_ValidContract_CreatesNewOrder测试全名:ACME.Maintenance.Domain.Test.OrderServiceTest.CreateOrder_ValidContract_CreatesNewOrder测试源:C:''Users''me''documents''visualstudio2015''Projects''ACME.Maintenance''ACME.Maintenance.Domain.Test''OrderServiceTest.cs:第65行测试结果:失败测试持续时间:0:00:00.0233941
结果StackTrace:在lambda_method(闭包,ContractDto,Contract,ResolutionContext)中的ACME.Maintenance.Domain.CContractService.GetById(字符串contractId)C: ''用户''我''文档'' visual studio2015''Projects''ACME.Maintenance''ACME.Maintenance.Domain''ControlService.cs:line34ACME.Maintenance.Domain.Test.OrderServiceTest.CreateOrder_ValidContract_CreatesNewOrder()在C:''Users''me''documents''visualstudio中2015''Projects''ACME.Maintenance''ACME.Maintenance.Domain.Test''OrderServiceTest.cs:line69结果消息:测试方法ACME.Maintenance.Domain.Test.OrderServiceTest.CreateOrder_ValidContract_CreatesNewOrder引发异常:AutoMapper.AutoMapperMappingException:缺少类型映射配置或不支持的映射。
映射类型:ContractDto->Contract
ACME.Maintenance.Domain.DTO.ContractDto->ACME.Maintinance.Domain.Contract
Mapper.Initialize(cfg => cfg.CreateMap<ContractDto, Contract>());
Mapper.Initialize(cfg => cfg.CreateMap<PartDto, Part>());
[TestMethod]
public void CreateOrder_ValidContract_CreatesNewOrder()
{
//Arrange
var orderService = new OrderService();
var contractService = new ContractService(_contractRepository);
var contract = contractService.GetById(ValidContractId);
// Act
var newOrder = orderService.CreateOrder(contract);
// Assert
Assert.IsInstanceOfType(newOrder, typeof(Order));
Guid guidOut;
Assert.IsTrue(Guid.TryParse(newOrder.OrderId, out guidOut));
Assert.AreEqual(newOrder.Status, ContractStatus.New);
Assert.IsInstanceOfType(newOrder.Items, typeof(IReadOnlyList<OrderItem>));
}
合同服务类别:
public Contract GetById(string contractId)
{
var contractDto = _contractRepository.GetById(contractId);
var contract = Mapper.Map<ContractDto, Contract>(contractDto);
Mapper.AssertConfigurationIsValid();
return contract;
}
合同类别:
public class Contract
{
public string ContractId { get; set; }
public DateTime ExpirationDate { get; set; }
}
合同类别:
public class ContractDto
{
public string ContractId { get; set; }
public DateTime ExpirationDate { get; set; }
}
您的问题是多次调用Mapping.Initialize
:它不是可加的,所以您覆盖了以前的映射,这就是为什么您丢失了从ContractDto
到Contract
的映射
因此,在测试的Setup
方法中,您应该这样称呼它:
Mapper.Initialize(cfg => {
cfg.CreateMap<ContractDto, Contract>();
cfg.CreateMap<PartDto, Part>();
});