public void ConstructorWithoutLimits() {
using (var memory = new MemoryStream(this.buffer))
using (var underTest = new BandwidthLimitedStream(memory)) {
Assert.That(underTest.ReadLimit, Is.Null);
Assert.That(underTest.WriteLimit, Is.Null);
}
}
public void ReadOrWriteOneByteMoreThanLimitTakesAtMinimumOneSecond([Values(true, false)]bool read) {
byte[] buf = new byte[this.length];
using (var memstream = new MemoryStream(this.buffer))
using (var underTest = new BandwidthLimitedStream(memstream, limit: this.limit)) {
var start = DateTime.Now;
if (read) {
underTest.Read(buf, 0, (int)this.limit + 1);
} else {
underTest.Write(buf, 0, (int)this.limit + 1);
}
TimeSpan duration = DateTime.Now - start;
Assert.That(duration.TotalMilliseconds, Is.AtLeast(1000));
}
}
public void SetAndGetReadAndWriteLimits([Values(true, false)]bool limitRead, [Values(true, false)]bool limitWrite) {
using (var memory = new MemoryStream(this.buffer))
using (var underTest = new BandwidthLimitedStream(memory)) {
Assert.That(underTest.ReadLimit, Is.Null);
Assert.That(underTest.WriteLimit, Is.Null);
underTest.ReadLimit = limitRead ? this.limit : (long?)null;
Assert.That(underTest.ReadLimit, Is.EqualTo(limitRead ? this.limit : (long?)null));
Assert.That(underTest.WriteLimit, Is.Null);
underTest.WriteLimit = limitWrite ? this.limit : (long?)null;
Assert.That(underTest.ReadLimit, Is.EqualTo(limitRead ? this.limit : (long?)null));
Assert.That(underTest.WriteLimit, Is.EqualTo(limitWrite ? this.limit : (long?)null));
underTest.DisableReadLimit();
Assert.That(underTest.ReadLimit, Is.Null);
Assert.That(underTest.WriteLimit, Is.EqualTo(limitWrite ? this.limit : (long?)null));
underTest.DisableWriteLimit();
Assert.That(underTest.ReadLimit, Is.Null);
Assert.That(underTest.WriteLimit, Is.Null);
}
}
public void ChangingLimitsNotifiesListener() {
using (var memory = new MemoryStream(this.buffer))
using (var underTest = new BandwidthLimitedStream(memory)) {
int readLimitNotified = 0;
int writeLimitNotified = 0;
long? expectedReadLimit = this.limit;
long? expectedWriteLimit = this.limit;
underTest.PropertyChanged += (sender, e) => {
Assert.That(sender, Is.EqualTo(underTest));
if (e.PropertyName == Utils.NameOf((BandwidthLimitedStream s) => s.ReadLimit)) {
readLimitNotified++;
Assert.That((sender as BandwidthLimitedStream).ReadLimit, Is.EqualTo(expectedReadLimit));
} else if (e.PropertyName == Utils.NameOf((BandwidthLimitedStream s) => s.WriteLimit)) {
writeLimitNotified++;
Assert.That((sender as BandwidthLimitedStream).WriteLimit, Is.EqualTo(expectedWriteLimit));
}
};
underTest.WriteLimit = expectedWriteLimit;
underTest.ReadLimit = expectedReadLimit;
Assert.That(readLimitNotified, Is.EqualTo(1));
Assert.That(writeLimitNotified, Is.EqualTo(1));
expectedReadLimit = null;
expectedWriteLimit = null;
underTest.DisableLimits();
Assert.That(readLimitNotified, Is.EqualTo(2));
Assert.That(writeLimitNotified, Is.EqualTo(2));
}
}