public void Test_Input_Empty()
{
string input = "";
var letterCombined = Letters.Combiner(input);
Assert.AreEqual(letterCombined.Count, 0);
}
public void Test_Input_234()
{
string input = "234";
var letterCombined = Letters.Combiner(input);
var desiredCombination = new List <string>()
{
"ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf", "dg", "dh", "di", "eg", "eh", "ei", "fg", "fh", "fi"
};
desiredCombination.Should().BeEquivalentTo(letterCombined);
}
public void Test_Input_2()
{
string input = "2";
var letterCombined = Letters.Combiner(input);
var desiredCombination = new List <string>()
{
"a", "b", "c"
};
desiredCombination.Should().BeEquivalentTo(letterCombined);
}