public void GetPermutations_ThrowsException_ForNullSequence()
{
Assert.Throws <ArgumentNullException>(() =>
Set.GetPermutations <int>(null));
}
public void GetPermutations_ReturnsOneElementSequence_ForOneElementSet()
{
var result = Set.GetPermutations("a".AsList()).Select(s => s.ToString(string.Empty)).ToArray();
TestHelper.AssertSequence(result, "a");
}
public void GetPermutations_ReturnsPermutationsOfTwo()
{
var result = Set.GetPermutations("ab".AsList()).Select(s => s.ToString(string.Empty)).ToArray();
TestHelper.AssertSequence(result, "ba", "ab");
}
public void GetPermutations_ReturnsEmptySequence_ForEmptySet()
{
var result = Set.GetPermutations(new int[0]);
TestHelper.AssertSequence(result);
}
