public void GetPi_Expression()
{
var context = new WorkflowContext();
context.Variables.Add(new Variable <double> {
VariableName = "sum", Value = 1.0
});
context.Variables.Add(new Variable <double> {
VariableName = "p", Value = 1.0
});
var wf = new SequentialWorkflow();
var forRange = new ForRange {
Start = 3, Count = 50, Step = 2
};
forRange.Activities.Add(new Expression {
Text = "p *= -3"
});
forRange.Activities.Add(new Expression {
Text = "sum += 1 / (i * p)"
});
wf.Activities.Add(forRange);
wf.Activities.Add(new Expression {
Text = "pi = Math.Sqrt(12) * sum"
});
wf.Execute(context);
AssertNearlyEqual(Math.PI, context.Variables.Get <double>("pi"));
}
public void GetPi_Methods()
{
var context = new WorkflowContext();
context.Variables.Add(new Variable <double> {
VariableName = "sum", Value = 1.0
});
context.Variables.Add(new Variable <double> {
VariableName = "p", Value = 1.0
});
var wf = new SequentialWorkflow();
var forRange = new ForRange {
Start = 3, Count = 50, Step = 2
};
forRange.Activities.Add(new InvokeMethod {
Type = typeof(SequentialWorkflowTest), MethodName = "NextP"
});
forRange.Activities.Add(new InvokeMethod {
Type = typeof(SequentialWorkflowTest), MethodName = "AddTerm"
});
wf.Activities.Add(forRange);
wf.Activities.Add(new InvokeMethod {
Type = typeof(SequentialWorkflowTest), MethodName = "Sqrt12"
});
wf.Execute(context);
AssertNearlyEqual(Math.PI, context.Variables.Get <double>("pi"));
}
public void GetSqrt_Expression()
{
var context = new WorkflowContext();
context.Variables.Add(new Variable <double> {
VariableName = "a", Value = 5.0
});
var wf = new SequentialWorkflow();
wf.Activities.Add(new Expression {
Text = "x = a"
});
var forRange = new ForRange {
Count = 100
};
forRange.Activities.Add(new Expression {
Text = "xi = (x + a / x) / 2"
});
var ifReturn = new If {
Condition = "x == xi"
};
ifReturn.Activities.Add(new Return());
forRange.Activities.Add(ifReturn);
forRange.Activities.Add(new Expression {
Text = "x = xi"
});
wf.Activities.Add(forRange);
wf.Execute(context);
AssertNearlyEqual(Math.Sqrt(5.0), context.Variables.Get <double>("x"));
}
void ReplayButton_Click(object sender, RoutedEventArgs e)
{
ReplayButton.IsEnabled = false;
Task.Run(() =>
{
workflow.Execute(new WorkflowContext());
Dispatcher.InvokeAsync(() => ReplayButton.IsEnabled = true);
});
}