public void MultipleProviders_OneWritesAtaTime_NoConflicts()
{
var provider1 = new DigitalSignalProvider();
var provider2 = new DigitalSignalProvider();
var signal = new DigitalSignal();
provider1.ConnectTo(signal);
provider2.ConnectTo(signal);
provider1.Write(DigitalLevel.High);
provider1.Write(DigitalLevel.Floating);
provider2.Write(DigitalLevel.Low);
provider2.Write(DigitalLevel.Floating);
provider1.Write(DigitalLevel.PosEdge);
}
public void Connected_WriteHighTwice_NoChange()
{
var uut = new DigitalSignalProvider();
var signal = new DigitalSignal();
uut.ConnectTo(signal);
uut.Write(DigitalLevel.High);
var levels = new List <DigitalLevel>();
signal.OnChanged += (s, e) => levels.Add(e.Level);
var count = uut.Write(DigitalLevel.High);
count.Should().Be(0);
levels.Should().HaveCount(count);
}
public void MultipleProviders_OneWrites_NoConflicts()
{
var provider1 = new DigitalSignalProvider();
var provider2 = new DigitalSignalProvider();
var signal = new DigitalSignal();
provider1.ConnectTo(signal);
provider2.ConnectTo(signal);
provider1.Write(DigitalLevel.High);
}
public void Connected_WriteHigh_LevelIsHigh()
{
var uut = new DigitalSignalProvider();
var signal = new DigitalSignal();
uut.ConnectTo(signal);
uut.Write(DigitalLevel.High);
uut.Level.Should().Be(DigitalLevel.High);
signal.Level.Should().Be(DigitalLevel.High);
}
public void Enable_PosEdge_CapturedValue()
{
var value = NewValue(Value);
_input.Write(value);
_portEnable.Write(DigitalLevel.PosEdge);
_uut.DataStream.Data.First().ToByte().Should().Be(Value);
}
private void Initialize()
{
// startup state
_addressBus.IsEnabled = true;
_busAcknowledge.Write(DigitalLevel.High);
_halt.Write(DigitalLevel.High);
_ioRequest.Write(DigitalLevel.High);
_memoryRequest.Write(DigitalLevel.High);
_machineCycle1.Write(DigitalLevel.High);
_refresh.Write(DigitalLevel.High);
_read.Write(DigitalLevel.High);
_write.Write(DigitalLevel.High);
}
public void Connect_WriteProvider_ConsumerSeesChanges()
{
var provider = new DigitalSignalProvider();
var consumer = new DigitalSignalConsumer();
var signal = new DigitalSignal();
provider.ConnectTo(signal);
consumer.ConnectTo(signal);
provider.Write(DigitalLevel.High);
consumer.Level.Should().Be(DigitalLevel.High);
}
public void Connect_WriteProvider_EventTriggered()
{
var provider = new DigitalSignalProvider();
var consumer = new DigitalSignalConsumer();
var signal = new DigitalSignal();
provider.ConnectTo(signal);
consumer.ConnectTo(signal);
consumer.MonitorEvents();
provider.Write(DigitalLevel.High);
consumer.ShouldRaise("OnChanged");
}
public void Connected_WriteHigh_TriggersEvent()
{
var uut = new DigitalSignalProvider();
var signal = new DigitalSignal();
uut.ConnectTo(signal);
signal.MonitorEvents();
uut.Write(DigitalLevel.High);
signal.ShouldRaise("OnChanged");
uut.Level.Should().Be(DigitalLevel.High);
signal.Level.Should().Be(DigitalLevel.High);
}
public void Write_MultipleConsumers_AllSeeChangedLevel()
{
var provider = new DigitalSignalProvider();
var consumer1 = new DigitalSignalConsumer();
var consumer2 = new DigitalSignalConsumer();
var signal = new DigitalSignal();
provider.ConnectTo(signal);
consumer1.ConnectTo(signal);
consumer2.ConnectTo(signal);
provider.Write(DigitalLevel.High);
consumer1.Level.Should().Be(DigitalLevel.High);
consumer2.Level.Should().Be(DigitalLevel.High);
}
public void Connected_WriteHigh_MovesToHigh()
{
var uut = new DigitalSignalProvider();
var signal = new DigitalSignal();
uut.ConnectTo(signal);
var levels = new List <DigitalLevel>();
signal.OnChanged += (s, e) => levels.Add(e.Level);
var count = uut.Write(DigitalLevel.High);
count.Should().Be(3);
levels.Should().HaveCount(count);
levels[0].Should().Be(DigitalLevel.Low);
levels[1].Should().Be(DigitalLevel.PosEdge);
levels[2].Should().Be(DigitalLevel.High);
}
public void Enable_PosEdge_ReleaseValue()
{
_portEnable.Write(DigitalLevel.Low);
_output.Value.ToByte().Should().Be(Value);
}