public void TestE1()
{
var target = new receipt(); target.Price = 3000001; Assert.AreEqual(1000, target.tax);
}
public void TestF2()
{
var target = new receipt(); target.Price = 10000000; Assert.AreEqual(2000, target.tax);
}
public void TestA2()
{
var target = new receipt(); target.Price = 49999; Assert.AreEqual(0, target.tax);
}