public void ReadAllLines()
{
var file = Path.Combine(TestContentManager.GetContentPath(), "text.txt");
var encoding = Encoding.Default;
const int takeLines = 3;
var lines = File.ReadAllLines(file, encoding).Take(takeLines);
var streamParser = new LineTextParser(UnitLineParser.Instance);
int linesTaken = 0;
var lineStream = Observable.Using(() => new StreamReader(file, encoding),
reader => streamParser.ExtractWords(reader).Do(line => linesTaken++).Take(takeLines));
var lines2 = lineStream.ToList().Wait();
Assert.That(lines2, Is.EquivalentTo(lines));
Assert.That(linesTaken, Is.LessThanOrEqualTo(takeLines));
}
public void LargeFileReadingPerformance([Values(false, true)] bool isAsyncStream, [Values(false, true)] bool isAsyncParser)
{
var path = largeContentPath;
Assume.That(path != null && File.Exists(path), "Failed to prepare test file");
using (var reader = new StreamReader(new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite | FileShare.Delete,
65536,
FileOptions.SequentialScan | (isAsyncStream ? FileOptions.Asynchronous : 0))))
{
var parser = new LineTextParser(AlphaNumericWordsLineParser.Instance)
{
UseAsync = isAsyncParser
};
var sw = Stopwatch.StartNew();
var count = parser.ExtractWords(reader).Count().Wait();
Console.WriteLine("Read {0} words in {1}", count, sw.Elapsed);
}
}
