public void TestInitialise()
{
var f = new FoldFunction<int>(Math.Max);
Assert.Throws<InvalidOperationException>(() => { var key = f[new int[0]]; });
for (var i = 0; i < 100; i++)
{
var x = MonteCarlo.Unordered(20, MonteCarlo.Number(1, 20)).ToList();
Assert.That(f[x], Is.EqualTo(x.Aggregate(Math.Max)));
}
}
public void FoldTestShoulWorkWhenWeDoNotAddValues()
{
var listOfFold = new List <int>()
{
};
int result = 0;
result = FoldFunction.Fold(listOfFold, 1, (x, y) => x * y);
Assert.AreEqual(1, result);
}
public void FoldTestShoulWorkWithAddZeroValue()
{
var listOfFold = new List <int>()
{
8, 6, 3, 0
};
int result = 0;
result = FoldFunction.Fold(listOfFold, 1, (x, y) => x * y);
Assert.AreEqual(0, result);
}
public void FoldTestShoulWork()
{
var listOfFold = new List <int>()
{
1, 2, 3, 4
};
int result = 0;
result = FoldFunction.Fold(listOfFold, 1, (x, y) => x * y);
Assert.IsTrue(listOfFold.Contains(3));
Assert.IsFalse(listOfFold.Contains(8));
Assert.AreEqual(24, result);
}
public void TestReactValue()
{
var numbers = new[] {10, 11, 12, 13, 6};
var calls = 0;
var f = new FoldFunction<int>((x, y) =>
{
calls++;
return Math.Max(x, y);
});
Assert.That(f.React(13, numbers.ToList().ToLog(Δ1.Empty)), Is.EqualTo(13.ToLog(false)));
Assert.That(calls, Is.EqualTo(0));
Assert.That(f.React(13, numbers.ToList().Mutate(Expressions.Numbers(4).ToIns(), (key, i) => 26)), Is.EqualTo(26.ToLog(true)));
Assert.That(calls, Is.EqualTo(5));
calls = 0;
Assert.That(f.React(13, numbers.ToList().Mutate(Expressions.Numbers(4).ToIns(), (key, i) => 13)), Is.EqualTo(13.ToLog(false)));
Assert.That(calls, Is.EqualTo(5));
calls = 0;
Assert.That(f.React(13, numbers.ToList().Mutate(Expressions.Numbers(5).ToIns(), (key, i) => 26)), Is.EqualTo(26.ToLog(true)));
Assert.That(calls, Is.EqualTo(1));
calls = 0;
Assert.That(f.React(13, numbers.ToList().Mutate(Expressions.Numbers(5).ToIns(), (key, i) => 7)), Is.EqualTo(13.ToLog(false)));
Assert.That(calls, Is.EqualTo(1));
calls = 0;
Assert.That(f.React(13, numbers.ToList().Mutate(Expressions.Numbers(1).ToDel(), (key, i) => 26)), Is.EqualTo(13.ToLog(false)));
Assert.That(calls, Is.EqualTo(3));
calls = 0;
Assert.That(f.React(13, numbers.ToList().Mutate(Expressions.Numbers(3).ToDel(), (key, i) => 26)), Is.EqualTo(12.ToLog(true)));
Assert.That(calls, Is.EqualTo(3));
}
