public void Can_Load_And_Peek_At_Three_Chars_From_Buffer()
{
ICharacterBuffer charBuffer = new StringCharacterBuffer("ABCDEFGHI", 3);
charBuffer.Load(3);
Assert.AreEqual((char)charBuffer.Peek(1), 'A');
Assert.AreEqual((char)charBuffer.Peek(2), 'B');
Assert.AreEqual((char)charBuffer.Peek(3), 'C');
}
public void Will_Not_Exceed_Buffer_If_Chars_Do_Not_Exist()
{
ICharacterBuffer charBuffer = new StringCharacterBuffer("ABC", 2);
charBuffer.Load(2);
Assert.AreEqual((char)charBuffer.Peek(1), 'A');
Assert.AreEqual((char)charBuffer.Peek(2), 'B');
charBuffer.Load(2);
Assert.AreEqual((char)charBuffer.Peek(1), 'C');
Assert.AreEqual(charBuffer.Peek(2), -1);
}
public void Cannot_Peek_Past_Buffer()
{
ICharacterBuffer charBuffer = new StringCharacterBuffer("ABCDEFGHI", 1);
charBuffer.Load();
Assert.AreEqual(0, charBuffer.Peek(2));
}