C# 如何使用接口在API控制器中作为助手类或处理程序单独编写业务逻辑

我正在使用实体框架开发.net RESTful WebAPI，其中包含带操作的API控制器

它将自动生成控制器，因此我需要在控制器（

EmployeeDetailController

）中将业务逻辑写入helper（

EmployeeDetailHandler

）类，并与接口（

IEEmployeeDetailHandler

）连接

因此需要将

Dbcontext

连接到helper类（

EmployeeDetailHandler

），而无需依赖控制器来使用xunit测试单元测试

如何编写处理程序类和控制器类

这是我的控制器（带有操作的API控制器，使用实体框架）

我需要通过将接口连接到控制器类，在helper类上分别编写该类中的逻辑

[Route("api/[controller]")]
[ApiController]
public class EmployeeDetailController : ControllerBase
{
    private readonly AuthenticationContext _context;

    public EmployeeDetailController(AuthenticationContext context)
    {
        _context = context;
    }

    // GET: api/EmployeeDetail
    [HttpGet]
    public IEnumerable<EmployeeDetail> GetEmployeeDetails()
    {
        return _context.EmployeeDetails;
    }

    // GET: api/EmployeeDetail/5
    [HttpGet("{id}")]
    public async Task<IActionResult> GetEmployeeDetail([FromRoute] int id)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        var employeeDetail = await _context.EmployeeDetails.FindAsync(id);

        if (employeeDetail == null)
        {
            return NotFound();
        }

        return Ok(employeeDetail);
    }

    // PUT: api/EmployeeDetail/5
    [HttpPut("{id}")]
    public async Task<IActionResult> PutEmployeeDetail([FromRoute] int id, [FromBody] EmployeeDetail employeeDetail)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        if (id != employeeDetail.EId)
        {
            return BadRequest();
        }

        _context.Entry(employeeDetail).State = EntityState.Modified;

        try
        {
            await _context.SaveChangesAsync();
        }
        catch (DbUpdateConcurrencyException)
        {
            if (!EmployeeDetailExists(id))
            {
                return NotFound();
            }
            else
            {
                throw;
            }
        }

        return NoContent();
    }

    // POST: api/EmployeeDetail
    [HttpPost]
    public async Task<IActionResult> PostEmployeeDetail([FromBody] EmployeeDetail employeeDetail)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        _context.EmployeeDetails.Add(employeeDetail);
        await _context.SaveChangesAsync();

        return CreatedAtAction("GetEmployeeDetail", new { id = employeeDetail.EId }, employeeDetail);
    }

    // DELETE: api/EmployeeDetail/5
    [HttpDelete("{id}")]
    public async Task<IActionResult> DeleteEmployeeDetail([FromRoute] int id)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        var employeeDetail = await _context.EmployeeDetails.FindAsync(id);
        if (employeeDetail == null)
        {
            return NotFound();
        }

        _context.EmployeeDetails.Remove(employeeDetail);
        await _context.SaveChangesAsync();

        return Ok(employeeDetail);
    }

    private bool EmployeeDetailExists(int id)
    {
        return _context.EmployeeDetails.Any(e => e.EId == id);
    }
  }

---

Expect是与接口相关的处理程序类（service/Hepler）。

单元测试是针对可以单独测试的少量代码

忘掉控制器，忘掉DbContext，专注于业务逻辑

您的控制器应该是薄层，执行模型验证并将数据传递给业务层，仅此而已。因此，你甚至不需要看它们

因此，对业务逻辑进行单元测试。使用集成测试覆盖每个端点，以确定正确和不正确的模型等

使用诸如Postman之类的工具或任何其他允许这样做的工具来协调集成测试

---

您展示的代码根本不适合单元测试。

DBContext和单元测试不在同一句话中

public class AuthenticationContext : IdentityDbContext
{
    public AuthenticationContext(DbContextOptions options):base(options {}
    public DbSet<ApplicationUser> ApplicationUsers { get; set; }
    public DbSet<EmployeeDetail> EmployeeDetails { get; set; }
}

public class EmployeeDetail
{
    [Key]
    public int EId { get; set; }
    [Required]
    [Column(TypeName = "Nvarchar(100)")]
    public string EmployeeName { get; set; }
    [Required]
    [Column(TypeName = "Nvarchar(10)")]
    public string PhoneNo { get; set; }
    [Required]
    [Column(TypeName = "Nvarchar(10)")]
    public string BDay { get; set; }
    [Required]
    [Column(TypeName = "Nvarchar(10)")]
    public string Nic { get; set; }
}