public void Switch_Notifies_When_ToggledOff()
{
// arrange
SwitchState state = SwitchState.On;
ExternalSwitchMemory externalSwitch = new ExternalSwitchMemory(state);
SwitchReader reader = new SwitchReader(externalSwitch);
reader.OnSwitchChanged = (s) => state = s;
// act
externalSwitch.CurrentState = SwitchState.Off;
// assert
Assert.AreEqual(SwitchState.Off, state);
}
public void Switch_NotifiesOnlyOnce_When_ToggledOnTwice()
{
// arrange
int toggleCount = 0;
ExternalSwitchMemory externalSwitch = new ExternalSwitchMemory(SwitchState.Off);
SwitchReader reader = new SwitchReader(externalSwitch);
reader.OnSwitchChanged = (s) => toggleCount++;
// act
externalSwitch.CurrentState = SwitchState.On;
externalSwitch.CurrentState = SwitchState.On;
// assert
Assert.AreEqual(1, toggleCount);
}
public void Switch_DoesNotNotify_When_ToggledOn_And_AlreadyOn()
{
// arrange
int toggleCount = 0;
ExternalSwitchMemory externalSwitch = new ExternalSwitchMemory(SwitchState.On);
SwitchReader reader = new SwitchReader(externalSwitch);
externalSwitch.CurrentState = SwitchState.On;
reader.OnSwitchChanged = (s) => toggleCount++;
// act
externalSwitch.CurrentState = SwitchState.On;
// assert
Assert.AreEqual(0, toggleCount);
}