public void Should_Clone_ReadOnlyDictionary()
{
var values = new Dictionary <int, bool> {
{ 1, true }, { 2, false }, { 3, true }, { 4, false }, { 5, true }
};
var original = new ReadOnlyDictionary <int, bool>(values);
var cloned = original.Clone();
Assert.IsNotNull(cloned);
}