public void CanEnterNegativeDecimals()
{
var engine = new Engine();
engine.Minus();
engine.Point();
engine.Digit(1);
Assert.AreEqual(-0.1, engine.Value);
engine.Digit(2);
Assert.AreEqual(-0.12, engine.Value);
engine.Times();
Assert.AreEqual(-0.12, engine.Value);
engine.Digit(3);
engine.Equals();
Assert.AreEqual(-0.36, engine.Value);
}
public void CanEnterDecimalPoints()
{
var engine = new Engine();
engine.Digit(1);
Assert.AreEqual(1, engine.Value);
engine.Point();
Assert.AreEqual(1, engine.Value);
engine.Digit(2);
Assert.AreEqual(1.2, engine.Value);
engine.Digit(3);
Assert.AreEqual(1.23, engine.Value);
engine.Plus();
Assert.AreEqual(1.23, engine.Value);
engine.Digit(4);
Assert.AreEqual(4, engine.Value);
engine.Point();
Assert.AreEqual(4, engine.Value);
engine.Digit(5);
Assert.AreEqual(4.5, engine.Value);
engine.Digit(6);
Assert.AreEqual(4.56, engine.Value);
engine.Equals();
Assert.AreEqual(5.79, engine.Value);
}