public void StartPositionNegative()
{
var byteArray = Encoding.ASCII.GetBytes("0123456789");
using (var memStream = new MemoryStream(byteArray))
using (var sStream = new SearchableStringStream(memStream))
{
sStream.ReadStringInRange(-2, 2);
}
}
public void EndPositionLargerThanStream()
{
var byteArray = Encoding.ASCII.GetBytes("0123456789");
using (var memStream = new MemoryStream(byteArray))
using (var sStream = new SearchableStringStream(memStream))
{
sStream.ReadStringInRange(1, 11);
}
}
public void EmptyStream()
{
var emptyByteArray = new byte[0];
using (var memStream = new MemoryStream(emptyByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
sStream.ReadStringInRange(0, 1);
}
}
public void ZeroLines()
{
var byteArray = Encoding.ASCII.GetBytes("0123456789");
using (var memStream = new MemoryStream(byteArray))
using (var sStream = new SearchableStringStream(memStream))
{
sStream.ReadLines(0);
}
}
public void NullNeedle()
{
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 sStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = sStream.IndexOfAllBackwards(null);
}
}
public void LessLinesThanAskedFor()
{
var byteArray = Encoding.ASCII.GetBytes("0123456789");
using (var memStream = new MemoryStream(byteArray))
using (var sStream = new SearchableStringStream(memStream))
{
var result = sStream.ReadLines(10);
Assert.AreEqual("0123456789", result);
}
}
public void GetThreeOfMany()
{
var byteArray = Encoding.ASCII.GetBytes("0\n1\n2\n3\n4\n5\n6\n7\n8\n9");
using (var memStream = new MemoryStream(byteArray))
using (var sStream = new SearchableStringStream(memStream))
{
var result = sStream.ReadLines(3);
Assert.AreEqual("0\n1\n2\n", result);
}
}
public void ReadWholeStream()
{
var byteArray = Encoding.ASCII.GetBytes("0123456789");
using (var memStream = new MemoryStream(byteArray))
using (var sStream = new SearchableStringStream(memStream))
{
var result = sStream.ReadStringInRange(0, 9);
Assert.AreEqual("0123456789", result);
}
}
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 StartPostionPastFirstLine_GetThree()
{
var byteArray = Encoding.ASCII.GetBytes("0\n1\n2\n3\n4\n5\n6\n7\n8\n9");
using (var memStream = new MemoryStream(byteArray))
using (var sStream = new SearchableStringStream(memStream))
{
sStream.Position = 2;
var result = sStream.ReadLines(3);
Assert.AreEqual("1\n2\n3\n", result);
}
}
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 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);
}
}
public void SingleOccuranceAtBeginning()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("needle in a haystack");
var needle = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var searchableStringStream = new SearchableStringStream(memStream))
{
// Act
var foundPosition = searchableStringStream.IndexOf(needle);
// Assert
Assert.AreEqual(0, foundPosition);
}
}
public void SingleOccuranceAtEnd()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("haystack with a needle");
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(16, foundPositions[0]);
}
}
public void EmptyStream()
{
// Arrange
var emptyByteArray = new byte[0];
var needle = "needle";
using (var memStream = new MemoryStream(emptyByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
sStream.Seek(0, SeekOrigin.End);
// Act
var foundPositions = sStream.IndexOfAllBackwards(needle);
// Assert
Assert.AreEqual(0, foundPositions.Length);
}
}
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 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))
{
sStream.Seek(0, SeekOrigin.End);
// Act
var foundPositions = sStream.IndexOfAllBackwards(needle);
// Assert
Assert.AreEqual(0, foundPositions.Length);
}
}
public void MultipleOccuranceSelectTwo()
{
// 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))
{
sStream.Seek(0, SeekOrigin.End);
// Act
var foundPositions = sStream.IndexOfAllBackwards(needle, 2);
// Assert
Assert.AreEqual(2, foundPositions.Length);
Assert.AreEqual(45, foundPositions[1]);
Assert.AreEqual(69, foundPositions[0]);
}
}
public void SingleOccuranceAtBeginning()
{
// Arrange
var haystackByteArray = Encoding.ASCII.GetBytes("needle in a haystack");
var needle = "needle";
using (var memStream = new MemoryStream(haystackByteArray))
using (var sStream = new SearchableStringStream(memStream))
{
sStream.Seek(0, SeekOrigin.End);
// Act
var foundPositions = sStream.IndexOfAllBackwards(needle);
// Assert
Assert.AreEqual(1, foundPositions.Length);
Assert.AreEqual(0, foundPositions[0]);
}
}
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]);
}
}
