public void Hysteresis_is_uninitialized_after_construction()
{
var hysteresis = new Hysteresis(range: 7, phaseCount: 5);
Expect(hysteresis.IsInitialized, Is.False);
Expect(hysteresis.Phase, Is.Null);
}
public void Update_of_large_magnitude_affects_phase([Values(0, 1)] int phase)
{
var hysteresis = new Hysteresis(range: 1, phaseCount: 2);
hysteresis.Initialize(phase);
hysteresis.Update(1 - phase, magnitude: 0.7);
Expect(hysteresis.Phase, Is.EqualTo(1 - phase));
}
public void Strong_update_towards_middle_phase_doesnt_overshoot_to_far_phase([Values(0, 2)] int phase)
{
var hysteresis = new Hysteresis(range: 1, phaseCount: 3);
hysteresis.Initialize(phase);
hysteresis.Update(phase: 1, magnitude: 1);
Expect(hysteresis.Phase, Is.EqualTo(1));
}
public void Two_opposite_updates_return_old_phase_when_second_update_magnitude_is_large([Values(0, 1)] int phase)
{
var hysteresis = new Hysteresis(range: 1, phaseCount: 2);
hysteresis.Initialize(phase);
hysteresis.Update(1 - phase, magnitude: 0.7);
hysteresis.Update(phase, magnitude: 0.4);
Expect(hysteresis.Phase, Is.EqualTo(phase));
}
public void Hysteresis_is_initialized_to_specified_phase_after_initialization()
{
var phase = 3;
var hysteresis = new Hysteresis(range: 7, phaseCount: 5);
hysteresis.Initialize(phase);
Expect(hysteresis.IsInitialized, Is.True);
Expect(hysteresis.Phase, Is.EqualTo(phase));
}
public void Strong_reverse_update_after_two_strong_direct_updates_reverts_phase([Values(0, 1)] int phase)
{
var hysteresis = new Hysteresis(range: 1, phaseCount: 2);
hysteresis.Initialize(phase: 0);
hysteresis.Update(1 - phase, magnitude: 0.7);
hysteresis.Update(1 - phase, magnitude: 0.7);
hysteresis.Update(phase, magnitude: 0.7);
Expect(hysteresis.Phase, Is.EqualTo(phase));
}
public void Two_small_magnitude_updates_accumulate_to_a_phase_transition([Values(0, 1)] int phase)
{
var hysteresis = new Hysteresis(range: 1, phaseCount: 2);
hysteresis.Initialize(phase);
hysteresis.Update(1 - phase, magnitude: 0.4);
Expect(hysteresis.Phase, Is.EqualTo(phase));
hysteresis.Update(1 - phase, magnitude: 0.3);
Expect(hysteresis.Phase, Is.EqualTo(1 - phase));
}
public void Updating_towards_the_present_state_sets_state_to_equilibrium_which_is_not_enough_to_prevent_subsequent_phase_transition([Values(0, 2)] int phase)
{
var hysteresis = new Hysteresis(range: 1, phaseCount: 3);
hysteresis.Initialize(phase);
hysteresis.Update(phase: 1, magnitude: 0.6);
Expect(hysteresis.Phase, Is.EqualTo(1));
hysteresis.Update(2 - phase, magnitude: 0.2);
Expect(hysteresis.Phase, Is.EqualTo(1));
hysteresis.Update(phase: 1, magnitude: 0.3);
Expect(hysteresis.Phase, Is.EqualTo(1));
hysteresis.Update(2 - phase, magnitude: 0.3);
Expect(hysteresis.Phase, Is.EqualTo(2 - phase));
}
