public void EmptySpace()
{
WordTargetLayout layout = new WordTargetLayout(new List <string> {
"VARIABLE", "VALUE", "VAGUE", "UNCLEAR", "STATE"
});
layout.AssignWord("VALUE", 3);
layout.AssignWord("UNCLEAR", 3);
Assert.AreEqual(0.660, layout.GetEmptySpace(3), 0.001);
Assert.AreEqual(1.0, layout.GetEmptySpace(4));
Assert.AreEqual(0.892, layout.GetEmptySpace(5), 0.001);
Assert.ThrowsException <System.Exception>(() => layout.GetEmptySpace(6));
Assert.ThrowsException <System.Exception>(() => layout.GetEmptySpace(1));
}
