public void ExpressionCanTriggerAction2()
{
var simple = new SimpleWithNotification();
var actionInvoked = 0;
Action action = () => actionInvoked++;
engine.When(() => simple.Value).Do(v => action(), ex => { });
actionInvoked.ShouldBe(0);
simple.Value = 2;
actionInvoked.ShouldBe(1);
Console.WriteLine(engine.ToString());
}
public void SimpleMethod()
{
var simple = new SimpleWithNotification();
Expression<Func<int>> expr = () => Negate(simple.Value);
var node = ExpressionParser.GetChildSources(expr);
node.Count.ShouldBe(1);
var valueNode = node.Single();
valueNode.FullPath.ShouldBe("simple.Value");
var rootNode = valueNode.SourcePaths.Single();
rootNode.FullPath.ShouldBe("simple");
var thisNode = rootNode.SourcePaths.Single();
thisNode.FullPath.ShouldBe("this");
thisNode.SourcePaths.ShouldBeEmpty();
}
public void PreventsReentrancy()
{
var one = new SimpleWithNotification();
var two = new SimpleWithNotification();
var three = new SimpleWithNotification();
var four = new SimpleWithNotification();
/* +--3<--+
* ▼ |
* 4 1
* ^ |
* +--2<--+
*/
engine.Assign(() => four.Value)
.From(() => two.Value + three.Value, e => { });
engine.Assign(() => two.Value)
.From(() => one.Value, e => { });
engine.Assign(() => three.Value)
.From(() => one.Value, e => { });
Console.WriteLine(engine.ToDotFormat(string.Empty));
one.Value = 1;
four.Value.ShouldBe(2);
engineInstrumentation.AssertSetCount("four.Value", 1);
}