public IEnumerator ChangeToZeroEmissionDurationTest()
{
// Given a valid confetti machine with particle systems and the new duration equals zero,
GameObject machineObject = Object.Instantiate(Resources.Load <GameObject>(pathToDefaultPrefab));
ConfettiMachine confettiMachine = machineObject.GetComponent <ConfettiMachine>();
ParticleSystem[] particleSystems = machineObject.GetComponentsInChildren <ParticleSystem>(true);
Assert.IsTrue(particleSystems.Length > 0);
float newDuration = 0f;
// When I change the emission duration,
confettiMachine.ChangeEmissionDuration(newDuration);
// Then it is accordingly changed in the confetti machine component itself and in all of its particle systems.
Assert.IsTrue(Math.Abs(confettiMachine.EmissionDuration) < 0.1f);
foreach (ParticleSystem particleSystem in particleSystems)
{
// Note it is not possible to set a particle system's duration to zero, Unity will silently set it to 0.05f.
Assert.IsTrue(Math.Abs(particleSystem.main.duration) < 0.1f);
}
yield break;
}
public IEnumerator ChangeToPositiveEmissionDurationTest()
{
// Given a valid confetti machine with particle systems and a new positive duration,
GameObject machineObject = Object.Instantiate(Resources.Load <GameObject>(pathToDefaultPrefab));
ConfettiMachine confettiMachine = machineObject.GetComponent <ConfettiMachine>();
ParticleSystem[] particleSystems = machineObject.GetComponentsInChildren <ParticleSystem>(true);
Assert.IsTrue(particleSystems.Length > 0);
float newDuration = particleSystems[0].main.duration + confettiMachine.EmissionDuration + 1.47f;
// When I change the emission duration,
confettiMachine.ChangeEmissionDuration(newDuration);
// Then it is accordingly changed in the confetti machine component itself and in all of its particle systems.
Assert.IsTrue(Math.Abs(confettiMachine.EmissionDuration - newDuration) < 0.001f);
foreach (ParticleSystem particleSystem in particleSystems)
{
Assert.IsTrue(Math.Abs(particleSystem.main.duration - newDuration) < 0.001f);
}
yield break;
}