[TestCase(0, TextIndex.IndexState.Start, 3, 1, null)] // test switch value.
public void TestClamp(int index, TextIndex.IndexState state, int minIndex, int maxIndex, int?actualIndex)
{
var textIndex = new TextIndex(index, state);
if (actualIndex != null)
{
var actualTextIndex = new TextIndex(actualIndex.Value, state);
Assert.AreEqual(TextIndexUtils.Clamp(textIndex, minIndex, maxIndex), actualTextIndex);
}
else
{
Assert.Throws <ArgumentException>(() => TextIndexUtils.Clamp(textIndex, minIndex, maxIndex));
}
}