public void WhenAdd_CurrentValueIncrementsByExpectedAmount(int initialValue, int increment, int expectation)
{
//arrange
tested = new MutableInteger(initialValue);
//act
tested.Add(increment);
//assert
Assert.AreEqual(expectation, tested.GetCurrentValue());
}
public void WhenMutableIntegerConstructed_CurrentValueIsEqualToConstructorParameter()
{
//arrange
int expected = 5;
tested = new MutableInteger(expected);
//act
int actual = tested.GetCurrentValue();
//assert
Assert.AreEqual(expected, actual);
}
public void WhenSubtract_CurrentValueIsDecrementedParameter()
{
//arrange
int expected = 0;
tested = new MutableInteger(5);
//act
tested.Subtract(5);
int actual = tested.GetCurrentValue();
//assert
Assert.AreEqual(expected, actual);
}
public void WhenAdd_CurrentValueIsIncremented()
{
//arrange
int expected = 10;
tested = new MutableInteger(5);
//act
tested.Add(5);
int actual = tested.GetCurrentValue();
//assert
Assert.AreEqual(expected, actual);
}