public void ConstructorTest()
{
int size = 4;
Permutor permutor = new Permutor(size);
int[] current = permutor.GetCurrentPermutation();
Assert.IsTrue(Compares.AreEqual(GetIdentity(size), current));
}
public void SetPermutationTest()
{
int size = 4;
int[] target = new int[] { 3, 1, 0, 2 };
Permutor permutor = new Permutor(size);
permutor.SetPermutation(target);
Assert.IsTrue(Compares.AreEqual(target, permutor.GetCurrentPermutation()));
}
public void SetRankTest()
{
int size = 4;
int[] reverse = new int[] { 3, 2, 1, 0 };
Permutor permutor = new Permutor(size);
// out of 4! = 24 permutations, numbered 0-23, this is the last
permutor.Rank = 23;
Assert.IsTrue(Compares.AreEqual(reverse, permutor.GetCurrentPermutation()));
}
public void GetCurrentPermutationTest()
{
int size = 4;
Permutor permutor = new Permutor(size);
bool allOk = true;
while (permutor.HasNext())
{
permutor.GetNextPermutation();
int[] current = permutor.GetCurrentPermutation();
if (ArrayElementsDistinct(current))
{
continue;
}
else
{
allOk = false;
break;
}
}
Assert.IsTrue(allOk);
}
