public void ApplySimpleValueToPlaceHolder()
{
PlaceHolderNode <int> node = new PlaceHolderNode <int>("answer", new int[0]);
INode <int> value = Flow.Constant(42);
Context context = new Context();
context.SetNode("answer", value);
Assert.IsTrue(node.ApplyContext(context));
Assert.AreEqual(42, node.GetValue(0));
}
public void UnknownPlaceholder()
{
PlaceHolderNode <int> node = new PlaceHolderNode <int>("answer", new int[1]);
INode <int> value = Flow.Constant(42);
Context context = new Context();
try
{
node.ApplyContext(context);
Assert.Fail();
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(InvalidOperationException));
Assert.AreEqual("Unknown placeholder 'answer'", ex.Message);
}
}
public void ApplyContextOnBinaryOperation()
{
PlaceHolderNode <int> node = new PlaceHolderNode <int>("answer", new int[0]);
INode <int> value1 = Flow.Constant(38);
INode <int> value2 = Flow.Constant(2);
INode <int> value1b = Flow.Constant(40);
INode <int> oper = Flow.Add(node, value2);
Context context = new Context();
context.SetNode("answer", value1);
Assert.IsTrue(oper.ApplyContext(context));
oper.Evaluate();
Assert.AreEqual(40, oper.GetValue(0));
context.SetNode("answer", value1b);
Assert.IsTrue(oper.ApplyContext(context));
oper.Evaluate();
Assert.AreEqual(42, oper.GetValue(0));
}
