public void Main()
{
CharSet c = new CharSet();
List <char> lab = new List <char> {
'a', 'b'
};
CharSet lc = new CharSet(lab);
Assert.True(TestUtils.listsEqual(lab, lc.getList()));
CharSet lcCopy = new CharSet(lc);
Assert.True(TestUtils.listsEqual(lcCopy.getList(), lc.getList()));
c.insert('f');
Assert.IsTrue(c.contains('f'));
Assert.IsFalse(c.contains('e'));
Assert.AreEqual(1, c.size());
c.erase('f');
Assert.IsFalse(c.contains('f'));
Assert.AreEqual(0, c.size());
c.insert('g');
c.insert('g');
c.insert('h');
Assert.AreEqual(2, c.size());
c.clear();
Assert.AreEqual(0, c.size());
}
