public void GetInt_Range_RandomInRangeResult()
{
var target = new FastRandomRandomization();
FlowAssert.IsAtLeastOneAttemptOk(100, () => {
Assert.AreEqual(0, target.GetInt(0, 2));
});
FlowAssert.IsAtLeastOneAttemptOk(100, () => {
Assert.AreEqual(1, target.GetInt(0, 2));
});
for (int i = 0; i < 100; i++)
{
Assert.AreNotEqual(2, target.GetInt(0, 2));
}
}
public void GetDouble_Range_RandomInRangeResult()
{
var target = new FastRandomRandomization();
FlowAssert.IsAtLeastOneAttemptOk(100, () => {
Assert.IsTrue(target.GetDouble(0, 2.2) < 1);
});
FlowAssert.IsAtLeastOneAttemptOk(1000, () => {
Assert.IsTrue(target.GetDouble(0, 2.2) > 2.1);
});
for (int i = 0; i < 100; i++)
{
Assert.AreNotEqual(2.3, target.GetDouble(0, 2.2));
}
}
public void GetUniqueInts_Length_ArrayWithUniqueInts()
{
var target = new FastRandomRandomization();
var actual = target.GetUniqueInts(10, 0, 10);
Assert.AreEqual(10, actual.Length);
Assert.AreEqual(10, actual.Distinct().Count());
for (int i = 0; i < 10; i++)
{
Assert.IsTrue(actual[i] >= 0 && actual[i] < 10);
}
actual = target.GetUniqueInts(10, 10, 20);
Assert.AreEqual(10, actual.Length);
Assert.AreEqual(10, actual.Distinct().Count());
for (int i = 0; i < 10; i++)
{
Assert.IsTrue(actual[i] >= 10 && actual[i] < 20);
}
actual = target.GetUniqueInts(2, 0, 20);
Assert.AreEqual(2, actual.Length);
Assert.AreEqual(2, actual.Distinct().Count());
for (int i = 0; i < 2; i++)
{
Assert.IsTrue(actual[i] >= 0 && actual[i] < 20);
}
FlowAssert.IsAtLeastOneAttemptOk(100, () =>
{
actual = target.GetUniqueInts(2, 0, 20);
Assert.AreEqual(2, actual.Length);
Assert.AreEqual(2, actual.Distinct().Count());
Assert.IsTrue(actual[0] >= 2);
});
}
public void SelectChromosomes_Generation_ChromosomesSelected()
{
var target = new RouletteWheelSelection();
var c1 = Substitute.ForPartsOf <ChromosomeBase>(2);
c1.Fitness = 0.1;
var c2 = Substitute.ForPartsOf <ChromosomeBase>(2);
c2.Fitness = 0.5;
var c3 = Substitute.ForPartsOf <ChromosomeBase>(2);
c3.Fitness = 0;
var c4 = Substitute.ForPartsOf <ChromosomeBase>(2);
c4.Fitness = 0.7;
var generation = new Generation(1, new List <IChromosome>()
{
c1, c2, c3, c4
});
// Just one selected chromosome is c1.
FlowAssert.IsAtLeastOneAttemptOk(100, () =>
{
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(1, actual.Count(c => c.Fitness == 0.1));
});
// All selected chromosome is c1.
FlowAssert.IsAtLeastOneAttemptOk(1000, () =>
{
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.IsTrue(actual.All(c => c.Fitness == 0.1));
});
// Just one selected chromosome is c2.
FlowAssert.IsAtLeastOneAttemptOk(100, () =>
{
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(1, actual.Count(c => c.Fitness == 0.5));
});
// All selected chromosome is c2.
FlowAssert.IsAtLeastOneAttemptOk(1000, () =>
{
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.IsTrue(actual.All(c => c.Fitness == 0.5));
});
// None selected chromosome is c3.
FlowAssert.IsAtLeastOneAttemptOk(100, () =>
{
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(0, actual.Count(c => c.Fitness == 0.0));
});
// Just one selected chromosome is c4.
FlowAssert.IsAtLeastOneAttemptOk(100, () =>
{
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(1, actual.Count(c => c.Fitness == 0.7));
});
// All selected chromosome is c4.
FlowAssert.IsAtLeastOneAttemptOk(1000, () =>
{
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.IsTrue(actual.All(c => c.Fitness == 0.7));
});
}