public void GivenTrafficLight_ThenInterfaceIsImplemented()
{
// ARRANGE
var trafficLight = new TrafficLightsSeriesPart1();
// ACT
var actual = trafficLight is ITrafficLight;
// ASSERT
Assert.IsTrue(actual);
}
public void GivenTrafficLight_WhenInstatiated_ThenRedLightIsOn_AndOthersAreOff()
{
// ARRANGE
var trafficLight = new TrafficLightsSeriesPart1();
// ACT
var amberActual = trafficLight.IsAmberOn;
var greenActual = trafficLight.IsGreenOn;
var redActual = trafficLight.IsRedOn;
// ASSERT
Assert.IsFalse(amberActual);
Assert.IsFalse(greenActual);
Assert.IsTrue(redActual);
}
public void GivenInstatiatedTrafficLight_WhenSetToRedAmberState_ThenRedLightAndAmberLightIsOn_AndGreenIsOff()
{
// ARRANGE
var trafficLight = new TrafficLightsSeriesPart1();
// ACT
trafficLight.Set(State.RedAmber);
var amberActual = trafficLight.IsAmberOn;
var greenActual = trafficLight.IsGreenOn;
var redActual = trafficLight.IsRedOn;
// ASSERT
Assert.IsTrue(amberActual);
Assert.IsFalse(greenActual);
Assert.IsTrue(redActual);
}
