public void EmptyNeedle()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("This haystack does not contain a n-e-e-d-l-e");
var emptyNeedle = string.Empty;
using (var memStream = new MemoryStream(haystackByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = sStream.LastIndexOf(emptyNeedle);
}
}
public void SingleOccuranceAtEnd()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("haystack with a needle");
var needle = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = sStream.LastIndexOf(needle);
// Assert
Assert.AreEqual(16, foundPosition);
}
}
public void NotInStream()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("This haystack does not contain a n-e-e-d-l-e");
var needle = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = sStream.LastIndexOf(needle);
// Assert
Assert.AreEqual(-1, foundPosition);
}
}
public void EmptyStream()
{
// Arrange
var emptyByteArray = new byte[0];
var needle = "needle";
using (var memStream = new MemoryStream(emptyByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = sStream.LastIndexOf(needle);
// Assert
Assert.AreEqual(-1, foundPosition);
}
}
public void MultipleOccurance()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("This hay stack has a needle here and another needle here and another needle here");
var needle = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = sStream.LastIndexOf(needle);
// Assert
Assert.AreEqual(69, foundPosition);
}
}