public void NullNeedle()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("This haystack does not contain a n-e-e-d-l-e");
using (var memStream = new MemoryStream(haystackByteArray))
using (var searchableStringStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = searchableStringStream.IndexOfAll(null);
}
}
public void NotInStream()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("This haystack does not contain a n-e-e-d-l-e");
var needleByteArray = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var searchableStringStream = new SearchableStringStream(memStream))
{
// Act
var foundPositions = searchableStringStream.IndexOfAll(needleByteArray);
// Assert
Assert.AreEqual(0, foundPositions.Length);
}
}
public void EmptyStream()
{
// Arrange
var emptyByteArray = new byte[0];
var needleByteArray = "needle";
using (var memStream = new MemoryStream(emptyByteArray))
using (var searchableStringStream = new SearchableStringStream(memStream))
{
// Act
var foundPositions = searchableStringStream.IndexOfAll(needleByteArray);
// Assert
Assert.AreEqual(0, foundPositions.Length);
}
}
public void SingleOccuranceAtBeginning()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("needle in a haystack");
var needleByteArray = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var searchableStringStream = new SearchableStringStream(memStream))
{
// Act
var foundPositions = searchableStringStream.IndexOfAll(needleByteArray);
// Assert
Assert.AreEqual(1, foundPositions.Length);
Assert.AreEqual(0, foundPositions[0]);
}
}
public void MultipleOccuranceSelectTwo_Unicode()
{
// Arrange
var haystackByteArray = Encoding.Unicode.GetBytes("This hay stack has a needle here and another needle here and another needle here");
var needleByteArray = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var searchableStringStream = new SearchableStringStream(memStream, Encoding.Unicode))
{
// Act
var foundPositions = searchableStringStream.IndexOfAll(needleByteArray, 2);
// Assert
Assert.AreEqual(2, foundPositions.Length);
Assert.AreEqual(42, foundPositions[0]);
Assert.AreEqual(90, foundPositions[1]);
}
}
public void MultipleOccurance_UTF8()
{
// Arrange
var haystackByteArray = Encoding.UTF8.GetBytes("This hay stack has a needle here and another needle here and another needle here");
var needleByteArray = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var searchableStringStream = new SearchableStringStream(memStream, Encoding.UTF8))
{
// Act
var foundPositions = searchableStringStream.IndexOfAll(needleByteArray);
// Assert
Assert.AreEqual(3, foundPositions.Length);
Assert.AreEqual(21, foundPositions[0]);
Assert.AreEqual(45, foundPositions[1]);
Assert.AreEqual(69, foundPositions[2]);
}
}