private static Condition MakeCondition(Stack <Condition> conds, Stack <int> ops)
{
int op = ops.Pop();
Condition right = conds.Pop();
Condition left = conds.Pop();
if (op >= 0)
{
FakeCondition l = (FakeCondition)left;
FakeCondition r = (FakeCondition)right;
return(new SimpleCondition(l.Value, r.Value, (Relation)op));
}
if (left is FakeCondition)
{
throw new Exception("Invalid condition type");
}
if (right is FakeCondition)
{
throw new Exception("Invalid condition type");
}
if (op == -1)
{
return(new AndCondition(left, right));
}
if (op == -2)
{
return(new OrCondition(left, right));
}
throw new Exception("Invalid opeation priority " + op);
}
public static void History()
{
var fake = new Fake {
IsTrueOrNull = false
};
using var condition = new FakeCondition(fake);
CollectionAssert.AreEqual(new bool?[] { false }, condition.History.Select(x => x.State));
fake.IsTrueOrNull = true;
CollectionAssert.AreEqual(new bool?[] { false, true }, condition.History.Select(x => x.State));
fake.IsTrueOrNull = null;
CollectionAssert.AreEqual(new bool?[] { false, true, null }, condition.History.Select(x => x.State));
}
public static void IsSatisfied()
{
var fake = new Fake {
IsTrueOrNull = false
};
using var condition = new FakeCondition(fake);
Assert.AreEqual(false, condition.IsSatisfied);
fake.IsTrueOrNull = true;
Assert.AreEqual(true, condition.IsSatisfied);
fake.IsTrueOrNull = null;
Assert.AreEqual(null, condition.IsSatisfied);
fake.IsTrueOrNull = false;
Assert.AreEqual(false, condition.IsSatisfied);
}
public static void Notifies()
{
var fake = new Fake {
IsTrueOrNull = false
};
using var condition = new FakeCondition(fake);
var argses = new List <PropertyChangedEventArgs>();
condition.PropertyChanged += (sender, args) => argses.Add(args);
fake.IsTrueOrNull = true;
Assert.AreEqual(1, argses.Count);
fake.IsTrueOrNull = false;
Assert.AreEqual(2, argses.Count);
fake.IsTrueOrNull = null;
Assert.AreEqual(3, argses.Count);
}
public void HistoryNegated()
{
var fake = new Fake {
IsTrueOrNull = false
};
using (var condition = new FakeCondition(fake))
{
using (var negated = condition.Negate())
{
CollectionAssert.AreEqual(new bool?[] { false }, condition.History.Select(x => x.State));
CollectionAssert.AreEqual(new bool?[] { true }, negated.History.Select(x => x.State));
fake.IsTrueOrNull = true;
CollectionAssert.AreEqual(new bool?[] { false, true }, condition.History.Select(x => x.State));
CollectionAssert.AreEqual(new bool?[] { true, false }, negated.History.Select(x => x.State));
fake.IsTrueOrNull = null;
CollectionAssert.AreEqual(new bool?[] { false, true, null }, condition.History.Select(x => x.State));
CollectionAssert.AreEqual(new bool?[] { true, false, null }, negated.History.Select(x => x.State));
}
}
}
