public void NegateOrCondition(bool?first, bool?other, bool?third, bool?expected)
{
var fake1 = new Fake {
IsTrueOrNull = first
};
using (var condition1 = new Condition(fake1.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake1.IsTrueOrNull))
{
var fake2 = new Fake {
IsTrueOrNull = other
};
using (var condition2 = new Condition(fake2.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake2.IsTrueOrNull))
{
var fake3 = new Fake {
IsTrueOrNull = third
};
using (var condition3 = new Condition(fake3.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake3.IsTrueOrNull))
{
using (var orCondition = new OrCondition(condition1, condition2, condition3))
{
using (var negated = new Negated <Condition>(orCondition))
{
Assert.AreEqual(expected, negated.IsSatisfied);
}
}
}
}
}
}
public void History()
{
var fake = new Fake {
IsTrueOrNull = false
};
using (var condition = new Condition(fake.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake.IsTrueOrNull)
{
Name = "IsTrueOrNull"
})
{
using (var negatedCondition = new Negated <Condition>(condition))
{
var expected = new List <bool?> {
true
};
CollectionAssert.AreEqual(expected, negatedCondition.History.Select(x => x.State));
fake.IsTrueOrNull = true;
expected.Add(false);
CollectionAssert.AreEqual(expected, negatedCondition.History.Select(x => x.State));
fake.IsTrueOrNull = null;
expected.Add(null);
CollectionAssert.AreEqual(expected, negatedCondition.History.Select(x => x.State));
}
}
}
public void Notifies()
{
var argses = new List <PropertyChangedEventArgs>();
var negArgses = new List <PropertyChangedEventArgs>();
var fake = new Fake {
IsTrueOrNull = false
};
using (var condition = new Condition(fake.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake.IsTrueOrNull == true))
{
using (var negatedCondition = new Negated <Condition>(condition))
{
condition.PropertyChanged += (_, e) => argses.Add(e);
negatedCondition.PropertyChanged += (_, e) => negArgses.Add(e);
Assert.AreEqual(0, argses.Count);
Assert.AreEqual(0, negArgses.Count);
fake.IsTrueOrNull = true;
Assert.AreEqual(1, argses.Count);
Assert.AreEqual(1, negArgses.Count);
fake.IsTrueOrNull = null;
Assert.AreEqual(2, argses.Count);
Assert.AreEqual(2, negArgses.Count);
}
}
}
/// <summary>
/// Gets a unique interger value that describes this object that is garenteed not to change.
/// </summary>
/// <returns></returns>
public override int GetHashCode()
{
if (InnerValue != null)
{
return(base.GetHashCode());
}
return(Negated.GetHashCode());
}
public void SatisfiedByHandlesNull(string value, bool expected)
{
var isNull = new TestSpecification <string>(val => val == null);
var result = new Negated <string>(isNull).IsSatisfiedBy(value);
result.Should()
.Be(expected);
}
public void SatisfiedByYieldCorrectResult(int value, bool expected)
{
var isPositive = new TestSpecification <int>(val => val > 0);
var result = new Negated <int>(isPositive).IsSatisfiedBy(value);
result.Should()
.Be(expected);
}
public static void NegateCondition(bool?value, bool?expected)
{
var fake = new Fake {
IsTrueOrNull = value
};
using var condition = new Condition(fake.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake.IsTrueOrNull);
using var negatedCondition = new Negated <Condition>(condition);
Assert.AreEqual(expected, negatedCondition.IsSatisfied);
}
public static void NegateTwiceReturnsOriginal()
{
var fake = new Fake {
IsTrueOrNull = false
};
using var condition = new Condition(fake.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake.IsTrueOrNull);
using var negatedCondition = new Negated <Condition>(condition);
#pragma warning disable CS0618 // Type or member is obsolete
using var negatedTwice = negatedCondition.Negate();
#pragma warning restore CS0618 // Type or member is obsolete
Assert.AreSame(condition, negatedTwice);
}
public static void Name()
{
var fake = new Fake {
IsTrueOrNull = false
};
using var condition = new Condition(fake.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake.IsTrueOrNull)
{
Name = "IsTrueOrNull"
};
using var negatedCondition = new Negated <Condition>(condition);
Assert.AreEqual("Not_" + condition.Name, negatedCondition.Name);
}
public void NegateTwiceReturnsOriginal()
{
var fake = new Fake {
IsTrueOrNull = false
};
using (var condition = new Condition(fake.ObservePropertyChanged(x => x.IsTrueOrNull), () => fake.IsTrueOrNull))
{
using (var negatedCondition = new Negated <Condition>(condition))
{
#pragma warning disable 618
using (var negatedTwice = negatedCondition.Negate())
#pragma warning restore 618
{
Assert.AreSame(condition, negatedTwice);
}
}
}
}
public override bool EvaluateAsBoolean(EvaluationContext context)
{
return(!Negated.EvaluateAsBoolean(context));
}
public override string EvaluateAsString(EvaluationContext context)
{
// no negation for string
return("!" + Negated.EvaluateAsString(context));
}
public int GetHashCode(VariableRelation obj)
{
return
(obj.A.GetHashCode() ^ obj.Rel.GetHashCode() ^ obj.B.GetHashCode() ^ Negated.GetHashCode());
}
/// <summary>
/// Gets a unique hash code describing this object that is guarenteed to not change over the lifetime
/// of this object.
/// </summary>
/// <returns></returns>
public override int GetHashCode()
{
return(Name.GetHashCode() ^ Negated.GetHashCode());
}