public void GetProductByIdNoContentTest()
{
// Arrange
int ProductId = 1;
ProductApiController controller = new ProductApiController();
controller.Request = new HttpRequestMessage();
controller.Configuration = new HttpConfiguration();
// Act
var response = controller.GetProductById(ProductId);
// Assert
Assert.IsNotNull(response);
Assert.AreEqual(System.Net.HttpStatusCode.NoContent, response.StatusCode);
}