public void TestRussionLetter()
{
var a = 'Я';
var result = Alphabet.AllLettersAfter(a);
Assert.AreEqual("Введите букву английского алфавита!", result);
}
public void TestLetter_g()
{
var a = 'g';
var result = Alphabet.AllLettersAfter(a);
Assert.AreEqual("HIJKLMNOPQRSTUVWXYZ", result);
}
public void TestLetter_z()
{
var a = 'z';
var result = Alphabet.AllLettersAfter(a);
Assert.AreEqual("Это последняя буква алфавита!", result);
}
public void TestLetter_T()
{
var a = 'T';
var result = Alphabet.AllLettersAfter(a);
Assert.AreEqual("UVWXYZ", result);
}
public void QuestionMarkTest()
{
var letter = '?';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("!", result);
}
public void SpecialLetterTest()
{
var letter = 'ö';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("!", result);
}
public void CapitalRussianSHLetterTest()
{
var letter = 'Ш';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("ЩЪЫЬЭЮЯ", result);
}
public void RussianYALetterTest()
{
var letter = 'Я';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("", result);
}
public void SmallRussianSHLetterTest()
{
var letter = 'ш';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("щъыьэюя", result);
}
public void LatinZLetterTest()
{
var letter = 'z';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("", result);
}
public void CapitalLatinVLetterTest()
{
var letter = 'V';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("WXYZ", result);
}
public void FirstSymbolTest()
{
var letter = char.MinValue;
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("!", result);
}
public void SmallLatinVLetterTest()
{
var letter = 'v';
var a = new Alphabet();
var result = a.AllLettersAfter(letter);
Assert.AreEqual("wxyz", result);
}
public void Random()
{
var rnd = new Random();
for (int i = 0; i != 100; i++)
{
var index = rnd.Next(0, 32);
var letter = russianLetters[index];
Assert.AreEqual(russianLetters.Substring(index + 1), russian.AllLettersAfter(letter));
}
}
public void NoLetterInAlphabet()
{
var alphabet = new Alphabet(new char[] { 'k', 't', 'a' });
Assert.Throws <ArgumentException>(() => alphabet.AllLettersAfter('q'));
}
public void Begin()
{
var i = russianLetters.IndexOf('А');
Assert.AreEqual(russianLetters.Substring(i + 1), russian.AllLettersAfter('А'));
}
