public void Compress_ConvertsLinesToChars()
{
var compressor = new LineToCharCompressor();
var result1 = compressor.Compress("alpha\nbeta\nalpha\n");
var result2 = compressor.Compress("beta\nalpha\nbeta\n");
Assert.AreEqual("\u0000\u0001\u0000", result1);
Assert.AreEqual("\u0001\u0000\u0001", result2);
}
public void Compress_DisjunctStrings()
{
var compressor = new LineToCharCompressor();
var result1 = compressor.Compress("a");
var result2 = compressor.Compress("b");
Assert.AreEqual("\u0000", result1);
Assert.AreEqual("\u0001", result2);
}
public void Decompress_OneLine()
{
var compressor = new LineToCharCompressor();
var result = compressor.Compress("a");
Assert.AreEqual("\u0000", result);
}
public void Compress_MultipleLines()
{
var d = new LineToCharCompressor();
var result = d.Compress("line1\r\nline2\r\n");
Assert.AreEqual("\u0000\u0001", result);
}
public void Compress_WhenCalled_EmptyText_ReturnsEmptyString()
{
var compressor = new LineToCharCompressor();
var result = compressor.Compress(string.Empty);
Assert.AreEqual("", result);
}
public void MultipleTexts()
{
var text1 = Enumerable.Range(1, 70000).Aggregate(new StringBuilder(), (sb, i) => sb.Append(i).AppendLine()).ToString();
var text2 = Enumerable.Range(20000, 999999).Aggregate(new StringBuilder(), (sb, i) => sb.Append(i).AppendLine()).ToString();
var compressor = new LineToCharCompressor();
var compressed1 = compressor.Compress(text1, 40000);
var compressed2 = compressor.Compress(text2);
var decompressed1 = compressor.Decompress(compressed1);
var decompressed2 = compressor.Decompress(compressed2);
AssertEqual(text1, decompressed1);
AssertEqual(text2, decompressed2);
}
public void Compress_OneLine()
{
var d = new LineToCharCompressor();
var result = d.Compress("a");
Assert.Equal("\u0000", result);
}
public void Decompress()
{
var d = new LineToCharCompressor();
var input = "line1\r\nline2\r\n";
var compressed = d.Compress(input);
var result = d.Decompress(compressed);
Assert.AreEqual(input, result);
}
public void Compress_MoreThan65535Lines_DecompressesCorrectly()
{
// More than 65536 to verify any 16-bit limitation.
var lineList = new StringBuilder();
for (var i = 0; i < 66000; i++)
{
lineList.Append(i + "\n");
}
var chars = lineList.ToString();
var compressor = new LineToCharCompressor();
var result = compressor.Compress(chars, sizeof(char));
var decompressed = compressor.Decompress(result);
AssertEqual(chars, decompressed);
}
public void Compress_MoreThan300Entries()
{
// More than 256 to reveal any 8-bit limitations.
var n = 300;
var lineList = new StringBuilder();
var charList = new StringBuilder();
for (var x = 0; x < n; x++)
{
lineList.Append(x + "\n");
charList.Append(Convert.ToChar(x));
}
var lines = lineList.ToString();
var chars = charList.ToString();
Assert.AreEqual(n, chars.Length);
var compressor = new LineToCharCompressor();
var result = compressor.Compress(lines);
Assert.AreEqual(chars, result);
}