public WpfPipelineProperty
(
IPropertyChangeRaiser propertyChanged,
Expression <Func <TType> > propertyExpression,
AssignablePipelineStage <TType>?setter
)
: this(propertyChanged, propertyExpression, setter, setter)
{
}
public void OutputIsTakenFromTheSelectedInput(int selected, int[] inputValues, int expected)
{
var select = AssignablePipelineStage.Create("Select", selected);
var inputs = CreateInputs(inputValues.Select(i => i.AsPipelineConstant()).ToArray());
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
PipelineAssert.Value(sut, expected);
}
public void StageInvalidatesDependentStages()
{
var select = AssignablePipelineStage.Create("Select", 0);
var inputs = CreateInputs(2.AsPipelineConstant(), 4.AsPipelineConstant());
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
PipelineAssert.AssertPipelineIsInvalidatingDependentStages(sut);
}
public void PassiveStageIsNeverInvalidated()
{
var assignable = new AssignablePipelineStage <int>("", 10);
var passive = new PassivePipelineStage <int>(assignable);
var test = passive.AttachTestStage();
assignable.SetValue(11);
test.AssertInvalidations(0);
}
public void RemovingTheCurrentlySelectedInputCausesException()
{
var select = AssignablePipelineStage.Create("Select", 0);
var input0 = AssignablePipelineStage.Create("Input 0", 0);
var inputs = CreateInputs(input0);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
Assert.Catch(() => sut.RemoveInput(0));
}
public void StageIsInvalidatedWhenCurrentlySelectedInputChanges()
{
var select = AssignablePipelineStage.Create("Select", 0);
var input = AssignablePipelineStage.Create("Input", 0);
var inputs = CreateInputs(input);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
var test = sut.AttachTestStage();
input.SetValue(1);
test.AssertInvalidations(1);
}
public void RemovingAStageRemovesDependency()
{
var select = AssignablePipelineStage.Create("Select", 0);
var input0 = AssignablePipelineStage.Create("Input 0", 0);
var input1 = AssignablePipelineStage.Create("Input 1", 0);
var inputs = CreateInputs(input0, input1);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
sut.RemoveInput(1);
PipelineAssert.NotDependentOn(sut, input1);
}
public void ExtractorIsUsedToCalculateNewDelta(int old, int @new, int expected)
{
var input = new AssignablePipelineStage <int>("", old);
var sut = new DeltaPipelineStage <int, int>("", Extractor, input, expected - 1);
var test = sut.AttachTestStage();
PipelineAssert.Value(sut, expected - 1);
input.SetValue(@new);
test.AssertInvalidations(1);
PipelineAssert.Value(sut, expected);
}
public void ExceptionInPropagationAreHandledAndATraceIsCreated()
{
var sut = new DataRetrievalPipelineStage <int>("Exception", () => throw new Exception("EXCEPTION!"));
var ss = AssignablePipelineStage.Create("Assignable", 10);
var dd = PipelineOperations.Create("operation", (a, e) => a, ss, sut);
var sdf = dd.CreateReaction(a => { }, false);
var exception = Assert.Catch <PipelineException>(() => ss.SetValue(11));
TestContext.WriteLine(exception.Message);
}
public void PotentialConcurrentUpdateOfStageIsCorrectlyDiscovered()
{
using var goAhead = new ManualResetEvent(false);
var value1 = new AssignablePipelineStage <int>("", 1000);
var value2 = new AssignablePipelineStage <int>("", 2000);
var concurrent = PipelineOperations.Create("Concurrent Stage", (a, b) => Wait(goAhead, 1000), value1, value2).AsEager();
Task.Run(() => value1.SetValue(1001));
goAhead.WaitOne();
var message = Assert.Throws <PipelineException>(() => value2.SetValue(1001));
}
public void StageIsInvalidatedWhenSelectSignalChanges()
{
var select = AssignablePipelineStage.Create("Select", 0);
var inputs = CreateInputs(2.AsPipelineConstant(), 4.AsPipelineConstant());
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
var test = sut.AttachTestStage();
select.SetValue(1);
select.SetValue(0);
test.AssertInvalidations(2);
}
public void ConcurrentUpdateOfTwoSeparateGraphsAreNotLabeledAsConcurrent()
{
using var goAhead = new ManualResetEvent(false);
var v1 = new AssignablePipelineStage <int>("", 1);
var v2 = new AssignablePipelineStage <int>("", 3);
var g1 = PipelineReactions.Create(_ => Wait(goAhead, 1000), v1);
var g2 = PipelineReactions.Create(_ => Wait(goAhead, 1000), v2);
Task.Run(() => v1.SetValue(1001));
goAhead.WaitOne();
Assert.DoesNotThrow(() => v2.SetValue(1001));
}
public void DependencyIsOnlyRemovedIfAllInputsDependentOnThatStageAreChanged()
{
var select = AssignablePipelineStage.Create("Select", 0);
var input0 = AssignablePipelineStage.Create("Input 0", 0);
var newInput0 = AssignablePipelineStage.Create("Input 0 (new)", 0);
var inputs = CreateInputs(input0, input0);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
sut.SetInput(0, newInput0);
PipelineAssert.DependentOn(sut, input0);
sut.SetInput(1, newInput0);
PipelineAssert.NotDependentOn(sut, input0);
}
public void SettingANewMappingRemovesOldDependencyAndAddsNew()
{
var select = AssignablePipelineStage.Create("Select", 0);
var input0 = AssignablePipelineStage.Create("Input 0", 0);
var newInput0 = AssignablePipelineStage.Create("Input 0 (new)", 0);
var inputs = CreateInputs(input0);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
sut.SetInput(0, newInput0);
PipelineAssert.NotDependentOn(sut, input0);
PipelineAssert.DependentOn(sut, newInput0);
}
public void SettingANewInputForAnUnselectedInputCausesNoInvalidation()
{
var select = AssignablePipelineStage.Create("Select", 1);
var input0 = AssignablePipelineStage.Create("Input 0", 0);
var input1 = AssignablePipelineStage.Create("Input 1", 0);
var newInput0 = AssignablePipelineStage.Create("Input 0 (new)", 100);
var inputs = CreateInputs(input0, input1);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
var test = sut.AttachTestStage();
sut.SetInput(0, newInput0);
test.AssertInvalidations(0);
}
public void NewValueAndChangedStageAtTheSameTimeHasTheIntendedReaction(PipelineSuspensionState initial, PipelineSuspensionState state, int invalidations)
{
var stateStage = Suspender(initial);
var value = new AssignablePipelineStage <int>("", 1);
var sut = new SuspendingPipelineStage <int>(value, stateStage);
var test = sut.AttachTestStage();
value.SetValueWithoutInvalidating(2);
stateStage.SetValueWithoutInvalidating(state);
PipelineCore.Invalidate(stateStage, value);
test.AssertInvalidations(invalidations);
PipelineAssert.Value(sut, 2);
}
public WpfPipelineProperty
(
IPropertyChangeRaiser propertyChanged,
Expression <Func <TType> > propertyExpression,
IPipelineStage <TType> getter,
AssignablePipelineStage <TType>?setter
)
{
PropertyChanged = propertyChanged ?? throw new ArgumentNullException(nameof(propertyChanged));
PropertyName = GetPropertyNameFromExpression(propertyExpression);
Getter = getter ?? throw new ArgumentNullException(nameof(getter));
Setter = setter;
Reaction = getter.CreateReaction(RaisePropertyChangedOnValueChanged);
}
public void CustomComparerIsUsedWhenEvaluatingInvalidation(int value)
{
var comparer = new SettableEqualityComparer <int>(false);
var sut = new AssignablePipelineStage <int>("", value, comparer);
var test = sut.AttachTestStage();
sut.SetValue(value);
test.AssertInvalidations(1);
test.AssertStageInvalidated(sut);
comparer.Equal = true;
test.PrepareForNext();
sut.SetValue(value + 1);
test.AssertInvalidations(1);
test.AssertStageNotInvalidated(sut);
}
public void DependencyIsOnlyRemovedIfAllInputsDependentOnThatStageAreRemoved()
{
var select = AssignablePipelineStage.Create("Select", 0);
var input0 = AssignablePipelineStage.Create("Input 0", 0);
var input2 = AssignablePipelineStage.Create("Input 2", 0);
var inputs = CreateInputs(input0, input0, input2);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
sut.RemoveInput(1);
PipelineAssert.DependentOn(sut, input0, input2);
select.SetValue(2); // To prevent exception
sut.RemoveInput(0);
PipelineAssert.NotDependentOn(sut, input0);
PipelineAssert.DependentOn(sut, input2);
}
public void SettingANewInputForTheCurrentlySelectedInputCausesInvalidationAndGetsTheNewValue()
{
var select = AssignablePipelineStage.Create("Select", 0);
var input0 = AssignablePipelineStage.Create("Input 0", 0);
var input1 = AssignablePipelineStage.Create("Input 1", 0);
var newInput0 = AssignablePipelineStage.Create("Input 0 (new)", 100);
var inputs = CreateInputs(input0, input1);
var sut = new MultiplexingPipelineStage <int, int>("Name", select, inputs);
var test = sut.AttachTestStage();
sut.SetInput(0, newInput0);
test.AssertInvalidations(1);
PipelineAssert.Value(sut, 100);
}
public void EachNewInvalidationPicksUpNewInformation()
{
var a = new AssignablePipelineStage <int>("", 1);
var sut = new PipelinePropagationInformationStage <int>("", inv => a.GetValue(), a.GetValue(), a);
var test = sut.AttachTestStage();
PipelineAssert.Value(sut, 1);
a.SetValue(2);
test.AssertInvalidations(1);
PipelineAssert.Value(sut, 2);
PipelineAssert.Value(sut, 2);
a.SetValue(5);
test.AssertInvalidations(2);
PipelineAssert.Value(sut, 5);
PipelineAssert.Value(sut, 5);
}
public static void Test()
{
var one = 1.AsPipelineConstant();
var two = 2.AsPipelineConstant();
var value = new AssignablePipelineStage <int>("integer", 0);
var suspension = new AssignablePipelineStage <PipelineSuspensionState>("suspender", PipelineSuspensionState.Resume);
var changeableOperation = new AssignablePipelineStage <Func <int, int> >("suspender", a => a);
var multiply = PipelineOperations.Create("multiply", Multiply, value, two);
var changeable = PipelineOperations.Create("changeable", changeableOperation, multiply);
var cache = changeable.WithCache();
var suspender = cache.WithConditionalSuspender(suspension);
var reaction = PipelineReactions.Create(Reaction, suspender);
value.SetValue(1);
value.SetValue(2);
changeableOperation.SetValue(a => a * 2);
GC.KeepAlive(reaction);
Console.ReadLine();
}
public void GivenNameIsReflected(string name)
{
var sut = new AssignablePipelineStage <int>(name, 10);
Assert.AreEqual(name, sut.Name);
}
public void InitialValueIsReflectedInGetValue(int initial)
{
var sut = new AssignablePipelineStage <int>("", initial);
Assert.AreEqual(initial, sut.GetValue());
}
/// <summary>
/// Adds an update to an <see cref="AssignablePipelineStage{TValue}"/>.
/// </summary>
/// <typeparam name="TValue">The data type.</typeparam>
/// <param name="transaction">The transaction.</param>
/// <param name="stage">The stage to set value for.</param>
/// <param name="value">The new value.</param>
/// <returns>The same transaction object.</returns>
public static IPipelineTransaction Update <TValue>(this IPipelineTransaction transaction, AssignablePipelineStage <TValue> stage, TValue value)
{
bool AssignableUpdate() => stage.SetValueWithoutInvalidating(value);
return(transaction.Update(stage, AssignableUpdate));
}
