/// <summary>
/// Builds the full next-state relation.
/// </summary>
/// <param name="constants">The system constants.</param>
/// <returns>The full next-state relation.</returns>
private static INextStateRelation <Constants, Variables> BuildNextStateRelation(Constants constants)
{
var fillJug =
new ExistentialQuantification <int, Constants, Variables>(
constants.Jugs, jug => new FillJug(jug));
var emptyJug =
new ExistentialQuantification <int, Constants, Variables>(
constants.Jugs, jug => new EmptyJug(jug));
var transfer = new ExistentialQuantification <int, Constants, Variables>(
constants.Jugs,
jug1 => new ExistentialQuantification <int, Constants, Variables>(
constants.Jugs,
jug2 => new TransferBetweenJugs(jug1, jug2)));
return(new Disjunction <Constants, Variables>(fillJug, emptyJug, transfer));
}
public void ExistentiallyQuantifiesCriteria()
{
var spec = new IntegerPredicate(i => i == 0);
var criteria = spec.Criteria;
var anySpec = new ExistentialQuantification<int>(spec);
var anyCriteria = anySpec.Criteria;
Assert.That(anyCriteria.Body, Is.AssignableTo<MethodCallExpression>());
var call = (MethodCallExpression)anyCriteria.Body;
Assert.That(call.NodeType, Is.EqualTo(ExpressionType.Call));
Assert.That(call.Method, Is.EqualTo(typeof(Enumerable).GetMethods().Where(m => m.Name == "Any").ToArray()[1].MakeGenericMethod(new[] { typeof(int) })));
Assert.That(call.Object, Is.Null);
Assert.That(call.Arguments, Has.Count.EqualTo(2));
Assert.That(call.Arguments[0], Is.AssignableTo<ParameterExpression>());
Assert.That(call.Arguments[1], Is.EqualTo(criteria));
ExpressionWriter.Write(anyCriteria);
}
