Postman - testowanie API

Product.cs

public class Product
{
    public int Id { get; set; }

    public string Name { get; set; }

    public string Category { get; set; }

    public decimal Price { get; set; }
}

ProductsController.cs

public class ProductsController : ApiController
{
    private static List<Product> _products;

    static ProductsController()
    {
        int id = 1;
        _products = new Faker<Product>()
            .RuleFor(o => o.Id, f => id++)
            .RuleFor(p => p.Name, (f, p) => f.Commerce.ProductName())
            .RuleFor(p => p.Category, (f, p) => f.Commerce.Categories(1).FirstOrDefault())
            .RuleFor(p => p.Price, (f, p) => f.Random.Number(100, 100000) / 100M)
            .Generate(10);
    }

    public IEnumerable<Product> Get()
    {
        return _products;
    }

    public Product Get(int id)
    {
        return _products.FirstOrDefault(p => p.Id == id);
    }

    public Product Post([FromBody]Product product)
    {
        product.Id = _products.Select(p => p.Id).Max() + 1;
        _products.Add(product);

        return product;
    }

    public Product Put(int id, [FromBody]Product product)
    {
        var existingProduct = _products.FirstOrDefault(p => p.Id == id);

        if (existingProduct != null)
        {
            existingProduct.Category = product.Category;
            existingProduct.Name = product.Name;
            existingProduct.Price = product.Price;
        }

        return existingProduct;
    }

    public void Delete(int id)
    {
        var product = _products.FirstOrDefault(p => p.Id == id);

        if (product != null)
        {
            _products.Remove(product);
        }
    }
}