public void OnFrameCompletedWorksWithMultiplePulsesAndOverflow(int[] tacts, float[] samples)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
var initialBit = false;
// --- Act
foreach (var tact in tacts)
{
spectrum.SetCurrentCpuTact(tact);
beeperDevice.ProcessEarBitValue(false, initialBit);
initialBit = !initialBit;
}
spectrum.SetCurrentCpuTact(69888 + 11);
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.LastEarBit.ShouldBe(!initialBit);
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Overflow.ShouldBe(11);
beeperDevice.LastSampleTact.ShouldBe(beeperDevice.HostVm.AudioConfiguration.TactsPerSample * 699);
for (var i = 0; i < samples.Length; i++)
{
samples[i].ShouldBe(beeperDevice.AudioSamples[i]);
}
var remainingSample = beeperDevice.LastEarBit ? 1.0f : 0.0f;
for (var i = samples.Length; i < 699; i++)
{
beeperDevice.AudioSamples[i].ShouldBe(remainingSample);
}
}
public void OnNewFrameCreatesOverflowSample(int overflow, int[] tacts, float?sample)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
var initialBit = false;
// --- Act
foreach (var tact in tacts)
{
spectrum.SetCurrentCpuTact(tact);
beeperDevice.ProcessEarBitValue(false, initialBit);
initialBit = !initialBit;
}
spectrum.SetCurrentCpuTact(69888 + overflow);
beeperDevice.OnFrameCompleted();
var overflowBefore = beeperDevice.Overflow;
beeperDevice.OnNewFrame();
// --- Assert
beeperDevice.SamplesIndex.ShouldBe(sample == null ? 0 : 1);
overflowBefore.ShouldBe(overflow);
beeperDevice.Overflow.ShouldBe(0);
if (sample.HasValue)
{
beeperDevice.AudioSamples[0].ShouldBe(sample.Value);
}
}
public void OnFrameCompletedWorksWithLowPulseAfterTheFirsttact()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentFrameTact(100);
beeperDevice.ProcessEarBitValue(false, false);
spectrum.SetCurrentFrameTact(spectrum.FrameTacts);
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Pulses.Count.ShouldBe(2);
beeperDevice.LastEarBit.ShouldBeFalse();
beeperDevice.LastPulseTact.ShouldBe(100);
var pulse1 = beeperDevice.Pulses[0];
pulse1.EarBit.ShouldBeTrue();
pulse1.Lenght.ShouldBe(100);
var pulse2 = beeperDevice.Pulses[1];
pulse2.EarBit.ShouldBeFalse();
pulse2.Lenght.ShouldBe(spectrum.FrameTacts - 100);
}
public void SampleLengthIsCalculatedProperly(int frames, int[] lenghts)
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act/Assert
for (var i = 1; i <= frames; i++)
{
spectrum.SetCurrentCpuTact(69888 * i);
beeperDevice.OnFrameCompleted();
beeperDevice.AudioSamples.Length.ShouldBe(lenghts[i - 1]);
beeperDevice.OnNewFrame();
}
}
public void OnFrameCompletedWorksWithNoPulse()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Pulses.Count.ShouldBe(1);
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.LastPulseTact.ShouldBe(0);
}
public void OnNewFrameKeepsLastEarBitValue()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentFrameTact(100);
beeperDevice.ProcessEarBitValue(false, false);
spectrum.SetCurrentFrameTact(spectrum.FrameTacts);
beeperDevice.OnFrameCompleted();
beeperDevice.OnNewFrame();
// --- Assert
beeperDevice.FrameCount.ShouldBe(1);
beeperDevice.Pulses.Count.ShouldBe(0);
beeperDevice.LastEarBit.ShouldBeFalse();
beeperDevice.LastPulseTact.ShouldBe(0);
}
public void OnFrameCompletedWorksWithNoPulseEndOverflow()
{
// --- Arrange
var spectrum = new SpectrumBeepTestMachine();
var beeperDevice = new BeeperDevice();
beeperDevice.OnAttachedToVm(spectrum);
// --- Act
spectrum.SetCurrentCpuTact(69888 + 11);
beeperDevice.OnFrameCompleted();
// --- Assert
beeperDevice.LastEarBit.ShouldBeTrue();
beeperDevice.FrameCount.ShouldBe(0);
beeperDevice.Overflow.ShouldBe(11);
beeperDevice.AudioSamples.Length.ShouldBe(699);
foreach (var sample in beeperDevice.AudioSamples)
{
sample.ShouldBe(1.0f);
}
}