public void BasicTests()
{
ParsingHelper helper = new ParsingHelper(ShortTest);
// Initial state
Assert.AreEqual('\0', ParsingHelper.NullChar);
Assert.AreEqual(ShortTest, helper.Text);
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
// Peek
Assert.AreEqual('F', helper.Peek());
Assert.AreEqual('o', helper.Peek(1));
Assert.AreEqual('u', helper.Peek(2));
Assert.AreEqual('r', helper.Peek(3));
Assert.AreEqual(ParsingHelper.NullChar, helper.Peek(1000));
Assert.AreEqual(ParsingHelper.NullChar, helper.Peek(-1000));
Assert.AreEqual(0, helper.Index);
// Get
Assert.AreEqual('F', helper.Get());
Assert.AreEqual('o', helper.Get());
Assert.AreEqual('u', helper.Get());
Assert.AreEqual('r', helper.Get());
Assert.AreEqual(4, helper.Index);
helper.Index = ShortTest.Length;
Assert.AreEqual(ParsingHelper.NullChar, helper.Get());
// Next
helper.Reset();
helper.Next();
Assert.AreEqual(1, helper.Index);
Assert.AreEqual('o', helper.Peek());
helper.Next(2);
Assert.AreEqual(3, helper.Index);
Assert.AreEqual('r', helper.Peek());
helper.Next(-2);
Assert.AreEqual(1, helper.Index);
Assert.AreEqual('o', helper.Peek());
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length - helper.Index, helper.Remaining);
helper.Next(10000);
Assert.AreEqual(helper.Text.Length, helper.Index);
Assert.AreEqual(true, helper.EndOfText);
Assert.AreEqual(0, helper.Remaining);
helper.Next(-10000);
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
helper.Index = 10000;
Assert.AreEqual(ShortTest.Length, helper.Index);
Assert.AreEqual(true, helper.EndOfText);
Assert.AreEqual(0, helper.Remaining);
helper.Index = -10000;
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(false, helper.EndOfText);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
helper.Index = 0;
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(ShortTest.Length, helper.Remaining);
Assert.AreEqual(false, helper.EndOfText);
helper.Index = helper.Text.Length;
Assert.AreEqual(helper.Text.Length, helper.Index);
Assert.AreEqual(0, helper.Remaining);
Assert.AreEqual(true, helper.EndOfText);
helper.Index = 5;
Assert.AreEqual(5, helper.Index);
Assert.AreEqual(ShortTest.Length - 5, helper.Remaining);
Assert.AreEqual(false, helper.EndOfText);
helper.Reset();
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(ShortTest, helper.Text);
helper.Reset(null);
Assert.AreEqual(0, helper.Index);
Assert.AreEqual(string.Empty, helper.Text);
Assert.AreEqual(true, helper.EndOfText);
Assert.AreEqual(0, helper.Remaining);
}