public void PrintPermutations_PermuteEmpty()
{
var output = StringPermutation.Permute(string.Empty);
Assert.AreEqual(1, output.Count);
Assert.AreEqual(string.Empty, output[0]);
}
public void PrintPermutations_PermuteOne()
{
var output = StringPermutation.Permute("A");
Assert.AreEqual(1, output.Count);
Assert.AreEqual("A", output[0]);
}
public void PrintPermutations_PermuteNull()
{
var output = StringPermutation.Permute(null);
Assert.AreEqual(1, output.Count);
Assert.AreEqual(null, output[0]);
}
public void PrintPermutations_PermuteTwo()
{
var output = StringPermutation.Permute("AB");
Assert.AreEqual(2, output.Count);
Assert.IsTrue(output.Contains("AB"));
Assert.IsTrue(output.Contains("BA"));
}
public void PrintPermutations_PermuteThree()
{
var output = StringPermutation.Permute("ABC");
Assert.AreEqual(6, output.Count);
Assert.IsTrue(output.Contains("ABC"));
Assert.IsTrue(output.Contains("ACB"));
Assert.IsTrue(output.Contains("BAC"));
Assert.IsTrue(output.Contains("BCA"));
Assert.IsTrue(output.Contains("CAB"));
Assert.IsTrue(output.Contains("CBA"));
}