public void EqualsAtIndex()
{
const string s = "01234567890123456789012345678901234567890123456789012345678901234567890123456789";
for (var index = 0; index <= s.Length; index++)
{
for (var length = 0; length < s.Length - index; length++)
{
const string format = "index={0} length={1}";
Assert.True(StringPool.EqualsAtIndex(s, index, s.Substring(index, length)), format, index, length);
if (length < s.Length)
{
Assert.False(StringPool.EqualsAtIndex(s, index, s.Substring(index, length) + 'Z'), format, index, length);
}
if (index > 0 && length > 0)
{
Assert.False(StringPool.EqualsAtIndex(s, index - 1, s.Substring(index, length)), format, index, length);
Assert.False(StringPool.EqualsAtIndex(s, index, s.Substring(index - 1, length)), format, index, length);
}
if (index + length < s.Length)
{
if (length == 0)
{
Assert.True(StringPool.EqualsAtIndex(s, index + 1, s.Substring(index, length)), format, index, length);
Assert.True(StringPool.EqualsAtIndex(s, index, s.Substring(index + 1, length)), format, index, length);
}
else
{
Assert.False(StringPool.EqualsAtIndex(s, index + 1, s.Substring(index, length)), format, index, length);
Assert.False(StringPool.EqualsAtIndex(s, index, s.Substring(index + 1, length)), format, index, length);
}
}
}
}
}