public void TextUtility_DetermineTextKind_1() { Assert.AreEqual ( TextKind.PlainText, TextUtility.DetermineTextKind(null) ); Assert.AreEqual ( TextKind.PlainText, TextUtility.DetermineTextKind("") ); Assert.AreEqual ( TextKind.RichText, TextUtility.DetermineTextKind(@"{\rtf1 Hello}") ); Assert.AreEqual ( TextKind.RichText, TextUtility.DetermineTextKind(@"Hello, {\b World}!") ); Assert.AreEqual ( TextKind.Html, TextUtility.DetermineTextKind("<html><body>Hello</body></html>") ); Assert.AreEqual ( TextKind.Html, TextUtility.DetermineTextKind("Hello, <b>World</b>!") ); Assert.AreEqual ( TextKind.PlainText, TextUtility.DetermineTextKind("Hello, world!") ); Assert.AreEqual ( TextKind.PlainText, TextUtility.DetermineTextKind("Hello, <world}!") ); }