public void ProductName_JustRight()
{
//Arrange
var currentProduct = new Product();
currentProduct.ProductName = "Saw";
string expected = "Saw";
string expectedMessage = null;
//Act
var actual = currentProduct.ProductName;
var actualMessage = currentProduct.ValidationMessage;
//Assert
Assert.AreEqual(expected, actual);
Assert.AreEqual(expectedMessage, actualMessage);
}