C＃NUnit和测试元组

Question

当测试元组时，以下测试会产生错误。

'Assert.AreEqual(test,productRepository.GetById(1))' threw an exception of type 'NUnit.Framework.AssertionException'

我该如何解决？ 这是由于在测试var元组时存在一些比较问题吗？ 请注意以下其他有效的测试：

其他比较仅适用于单个模型行。

NUnit测试

[Test]
public void TestProducts()
{
    var options = new DbContextOptionsBuilder<ElectronicsContext>()
        .UseInMemoryDatabase(databaseName: "Products Test")
        .Options;

    using (var context = new ElectronicsContext(options))
    {
        //DbContextOptionsBuilder<ElectronicsContext> context = new DbContextOptionsBuilder<ElectronicsContext>()

        context.Product.Add(new Product { ProductId = 1, ProductName = "TV", ProductDescription = "TV testing", ImageLocation = "test" });
        context.SaveChanges();
        ProductRepository productRepository = new ProductRepository(context);
        var test = new Product
            {ProductId = 1, ProductName = "TV", ProductDescription = "TV testing", ImageLocation = "test"};

       **//This works**
        Assert.AreEqual("TV", productRepository.GetById(1).ProductName);

       **//This Fails**
        Assert.AreEqual(test,productRepository.GetById(1));

    }

知识库

public class ProductRepository : IProductRepository<Product>
{
    private readonly ElectronicsContext _context;
    public ProductRepository(ElectronicsContext context)
    {
        _context = context;
    }

    public IEnumerable<Product> GetAllProduct()
    {
        return _context.Product.ToList();
    }

    public IQueryable<Product> Products => _context.Product;

    public Product GetById(int productid)
    {
        return _context.Product.Find(productid);

    }
}

模型

public partial class Product
{
    public int ProductId { get; set; }
    public string ProductName { get; set; }
    public string ProductDescription { get; set; }
    public string ImageLocation { get; set; }

    public int? ProductCategoryId { get; set; }
    public virtual ProductCategory ProductCategory { get; set; }
}

Answer 1

要检查两个对象是否相等，您需要重写Equals方法

public partial class Product
{
    public int ProductId { get; set; }
    public string ProductName { get; set; }
    public string ProductDescription { get; set; }
    public string ImageLocation { get; set; }

    public int? ProductCategoryId { get; set; }
    public virtual ProductCategory ProductCategory { get; set; }

    public override bool Equals(object obj)
    {
        if ((obj == null) || ! this.GetType().Equals(obj.GetType()))
        {
            return false;
        }

        Product other = (Product)obj;
        return ProductId == other.ProductId && ProductName.Equals(other.ProductName); // or anything else you want to compare
    }
}