public void Notify()
{
var file = Path.GetTempFileName();
File.Delete(file);
var info = new FileInfo(file);
var scheduler = new TestScheduler();
FileNotification result = null;
using (info.WatchFile(TimeSpan.FromSeconds(1), scheduler).Subscribe(x => result = x))
{
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Missing);
File.AppendAllLines(file, Enumerable.Range(1, 10).Select(i => i.ToString()));
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Created);
result.NotificationType.Should().NotBe(0);
File.AppendAllLines(file, Enumerable.Range(11, 10).Select(i => i.ToString()));
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Changed);
File.Delete(file);
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Missing);
}
}
public void Notify()
{
var file = Path.GetTempFileName();
File.Delete(file);
var info = new FileInfo(file);
var scheduler = new TestScheduler();
FileNotification result = null;
using (info.WatchFile(TimeSpan.FromSeconds(1), scheduler).Subscribe(x => result = x))
{
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Missing);
File.AppendAllLines(file, Enumerable.Range(1, 10).Select(i => i.ToString()));
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Created);
result.NotificationType.Should().NotBe(0);
File.AppendAllLines(file, Enumerable.Range(11, 10).Select(i => i.ToString()));
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Changed);
File.Delete(file);
scheduler.AdvanceBySeconds(1);
result.NotificationType.Should().Be(FileNotificationType.Missing);
}
}
public void AutoTailWithFilter()
{
var scheduler = new TestScheduler();
var autoTailer = Observable.Return(new ScrollRequest(10));
Func <string, bool> predicate = s => s.Contains("odd");
using (var file = new TestFile())
{
file.Append(Enumerable.Range(1, 100).Select(i => i % 2 == 1 ? $"{i} is an odd number" : $"{i} is an even number").ToArray());
var search = file.Info.Search(predicate, scheduler);
using (var tailer = new LineScroller(file.Info, search, autoTailer, new NullLogger(), scheduler))
{
//lines which contain "1"
var expectedLines = Enumerable.Range(1, 100)
.Select(i => i % 2 == 1 ? $"{i} is an odd number" : $"{i} is an even number")
.Where(s => s.Contains("odd"))
.Reverse()
.Take(10)
.Reverse()
.ToArray();
scheduler.AdvanceBySeconds(1);
tailer.Lines.Items.Select(l => l.Text).ShouldAllBeEquivalentTo(expectedLines);
file.Append(Enumerable.Range(101, 10).Select(i => i % 2 == 1 ? $"{i} is an odd number" : $"{i} is an even number").ToArray());
scheduler.AdvanceBySeconds(1);
expectedLines = Enumerable.Range(1, 110)
.Select(i => i % 2 == 1 ? $"{i} is an odd number" : $"{i} is an even number")
.Where(s => s.Contains("odd"))
.Reverse()
.Take(10)
.Reverse()
.ToArray();
scheduler.AdvanceBySeconds(1);
tailer.Lines.Items.Select(l => l.Text).ShouldAllBeEquivalentTo(expectedLines);
}
}
}
public void AutoTailWithFilter()
{
var file = Path.GetTempFileName();
var info = new FileInfo(file);
var scheduler = new TestScheduler();
var textMatch = Observable.Return("odd");
var autoTailer = Observable.Return(new ScrollRequest(10));
File.AppendAllLines(file, Enumerable.Range(1, 100)
.Select(i => i%2 == 1 ? $"{i} is an odd number" : $"{i} is an even number").ToArray());
using (var tailer = new FileTailer(info, textMatch, autoTailer, scheduler))
{
//lines which contain "1"
var expectedLines = Enumerable.Range(1, 100)
.Select(i => i % 2 == 1 ? $"{i} is an odd number" : $"{i} is an even number")
.Where(s => s.Contains("odd"))
.Reverse()
.Take(10)
.Reverse()
.ToArray();
scheduler.AdvanceBySeconds(1);
tailer.Lines.Items.Select(l => l.Text).ShouldAllBeEquivalentTo(expectedLines);
File.AppendAllLines(file, Enumerable.Range(101, 10)
.Select(i => i % 2 == 1 ? $"{i} is an odd number" : $"{i} is an even number").ToArray());
scheduler.AdvanceBySeconds(1);
expectedLines = Enumerable.Range(1, 110)
.Select(i => i % 2 == 1 ? $"{i} is an odd number" : $"{i} is an even number")
.Where(s => s.Contains("odd"))
.Reverse()
.Take(10)
.Reverse()
.ToArray();
scheduler.AdvanceBySeconds(1);
File.Delete(file);
tailer.Lines.Items.Select(l => l.Text).ShouldAllBeEquivalentTo(expectedLines);
}
}
public void AutoTailWithFilter()
{
var scheduler = new TestScheduler();
var autoTailer = Observable.Return(new ScrollRequest(10));
Func<string, bool> predicate = s => s.Contains("odd");
using (var file = new TestFile())
{
file.Append(Enumerable.Range(1, 100).Select(i => i%2 == 1 ? $"{i} is an odd number" : $"{i} is an even number").ToArray());
var search = file.Info.Search(predicate, scheduler);
using (var tailer = new LineScroller(file.Info, search, autoTailer, new NullLogger(), scheduler))
{
//lines which contain "1"
var expectedLines = Enumerable.Range(1, 100)
.Select(i => i%2 == 1 ? $"{i} is an odd number" : $"{i} is an even number")
.Where(s => s.Contains("odd"))
.Reverse()
.Take(10)
.Reverse()
.ToArray();
scheduler.AdvanceBySeconds(1);
tailer.Lines.Items.Select(l => l.Text).ShouldAllBeEquivalentTo(expectedLines);
file.Append( Enumerable.Range(101, 10).Select(i => i%2 == 1 ? $"{i} is an odd number" : $"{i} is an even number").ToArray());
scheduler.AdvanceBySeconds(1);
expectedLines = Enumerable.Range(1, 110)
.Select(i => i%2 == 1 ? $"{i} is an odd number" : $"{i} is an even number")
.Where(s => s.Contains("odd"))
.Reverse()
.Take(10)
.Reverse()
.ToArray();
scheduler.AdvanceBySeconds(1);
tailer.Lines.Items.Select(l => l.Text).ShouldAllBeEquivalentTo(expectedLines);
}
}
}
public void AutoTail()
{
var file = Path.GetTempFileName();
var info = new FileInfo(file);
var scheduler = new TestScheduler();
var textMatch = Observable.Return((string)null);
var autoTailer = Observable.Return(new ScrollRequest(10));
File.AppendAllLines(file, Enumerable.Range(1, 100).Select(i =>i.ToString()).ToArray());
using (var tailer = new FileTailer(info, textMatch, autoTailer,scheduler))
{
scheduler.AdvanceBySeconds(1);
tailer.Lines.Items.Select(l => l.Number).ShouldAllBeEquivalentTo(Enumerable.Range(91, 10));
File.AppendAllLines(file, Enumerable.Range(101, 10).Select(i => i.ToString()));
scheduler.AdvanceByMilliSeconds(250);
File.Delete(file);
tailer.Lines.Items.Select(l => l.Number).ShouldAllBeEquivalentTo(Enumerable.Range(101, 10));
}
}
public void WillNotApplyFilterWhenTextIsLessThan3Character()
{
var file = Path.GetTempFileName();
var info = new FileInfo(file);
var scheduler = new TestScheduler();
var textMatch = Observable.Return((string)"1");
var autoTailer = Observable.Return(new ScrollRequest(10));
File.AppendAllLines(file, Enumerable.Range(1, 100).Select(i => i.ToString()).ToArray());
using (var tailer = new FileTailer(info, textMatch, autoTailer, scheduler))
{
//lines which contain "1"
int[] expectedLines = Enumerable.Range(91, 10)
.Select(i => i.ToString())
.Select(int.Parse)
.ToArray();
scheduler.AdvanceBySeconds(1);
tailer.Lines.Items.Select(l => l.Number).ShouldAllBeEquivalentTo(expectedLines);
File.Delete(file);
tailer.Lines.Items.Select(l => l.Number).ShouldAllBeEquivalentTo(expectedLines);
}
}