public void GetPreviousWord()
{
WordTargetLayout layout = new WordTargetLayout(new List <string> {
"VARIABLE", "VALUE", "VAGUE", "UNCLEAR", "STATE"
});
Assert.AreEqual(null, layout.GetPreviousWord("VARIABLE"));
Assert.AreEqual("VARIABLE", layout.GetPreviousWord("VALUE"));
Assert.AreEqual("UNCLEAR", layout.GetPreviousWord("STATE"));
Assert.ThrowsException <System.Exception>(() => layout.GetNextWord("NOTTHERE"));
}
