public void TestEscapes()
{
Assert.AreEqual(Patterns.CharClass(LineFeed, 'a').Expression, @"[\na]");
Assert.AreEqual(Patterns.CharClass(CarriageReturn, 'a').Expression, @"[\ra]");
Assert.AreEqual(Patterns.CharClass(Digit, 'a').Expression, @"[\da]");
Assert.AreEqual(Patterns.CharClass(NonDigit, 'a').Expression, @"[\Da]");
Assert.AreEqual(Patterns.CharClass(AnyWordChar, 'a').Expression, @"[\wa]");
Assert.AreEqual(Patterns.CharClass(NonWordChar, 'a').Expression, @"[\Wa]");
Assert.AreEqual(Patterns.CharClass(Bell, 'a').Expression, @"[\aa]");
Assert.AreEqual(Patterns.CharClass(Alarm, 'a').Expression, @"[\aa]");
Assert.AreEqual(Patterns.CharClass(Backspace, 'a').Expression, @"[\ba]");
Assert.AreEqual(Patterns.CharClass(Tab, 'a').Expression, @"[\ta]");
Assert.AreEqual(Patterns.CharClass(VerticalTab, 'a').Expression, @"[\va]");
Assert.AreEqual(Patterns.CharClass(FormFeed, 'a').Expression, @"[\fa]");
Assert.AreEqual(Patterns.CharClass(WhiteSpace, 'a').Expression, @"[\sa]");
Assert.AreEqual(Patterns.CharClass(NonWhiteSpace, 'a').Expression, @"[\Sa]");
Assert.AreEqual(Patterns.CharClass(Escape, 'a').Expression, @"[\ea]");
Assert.AreEqual(Patterns.CharClass(Hat, 'a').Expression, @"[\^a]");
Assert.AreEqual(Patterns.CharClass(Minus, 'a').Expression, @"[\-a]");
Assert.AreEqual(Patterns.CharClass(OpenSquareBracket, 'a').Expression, @"[\[a]");
Assert.AreEqual(Patterns.CharClass(BackSlash, 'a').Expression, @"[\\a]");
}