public void Can_count_lines_ranged()
{
var expected = 10000L;
using (var fixture = new FlatFileFixture((int)expected, Encoding.UTF8))
{
var sw = Stopwatch.StartNew();
var lines = LineReader.CountLines(fixture.FileStream, Encoding.UTF8);
Assert.Equal(expected, lines);
Trace.WriteLine($"{lines} lines took {sw.Elapsed} to read.");
}
}
public void Can_count_lines_ranged()
{
const long expected = 10000L;
using var fixture = new FlatFileFixture((int)expected, Encoding.UTF8);
var range = new RangeStream(fixture.FileStream, 0, 5000);
var sw = Stopwatch.StartNew();
var lines = LineReader.CountLines(range, Encoding.UTF8);
Assert.True(lines < 150);
_console.WriteLine($"{lines} lines took {sw.Elapsed} to read.");
}
private void CheckRowCount(Stream stream)
{
var linesInFile = LineReader.CountLines(stream, Encoding);
if (linesInFile < RowCount)
{
throw new ArgumentException($"file does not have at least {RowCount} rows");
}
if (stream.CanSeek)
{
stream.Position = 0L;
}
}
public long LineReader_CountLines()
{
return(LineReader.CountLines(File.OpenRead(_files[rowCount]), Encoding.UTF8, null, CancellationToken.None));
}
