public static async Task WriteDuringReadAsync()
{
using var writer = new FileBufferingWriter();
writer.Write(new byte[] { 1, 2, 3 });
using var manager = writer.GetWrittenContent();
Equal(new byte[] { 1, 2, 3 }, manager.Memory.ToArray());
Throws <InvalidOperationException>(writer.Clear);
Throws <InvalidOperationException>(() => writer.WriteByte(2));
Throws <InvalidOperationException>(() => writer.GetWrittenContent());
await ThrowsAsync <InvalidOperationException>(() => writer.WriteAsync(new byte[2], 0, 2));
await ThrowsAsync <InvalidOperationException>(writer.GetWrittenContentAsync().AsTask);
}
public static void ReadWriteApm(int threshold, bool asyncIO)
{
using var writer = new FileBufferingWriter(memoryThreshold: threshold, asyncIO: asyncIO);
var bytes = new byte[500];
for (byte i = 0; i < byte.MaxValue; i++)
{
bytes[i] = i;
}
var ar = writer.BeginWrite(bytes, 0, byte.MaxValue, null, "state1");
Equal("state1", ar.AsyncState);
True(ar.AsyncWaitHandle.WaitOne(DefaultTimeout));
writer.EndWrite(ar);
ar = writer.BeginWrite(bytes, byte.MaxValue, bytes.Length - byte.MaxValue, null, "state2");
Equal("state2", ar.AsyncState);
True(ar.AsyncWaitHandle.WaitOne(DefaultTimeout));
writer.EndWrite(ar);
Equal(bytes.Length, writer.Length);
using var manager = writer.GetWrittenContent();
Equal(bytes, manager.Memory.ToArray());
}
public static void StressTest3()
{
var buffer = new byte[1024 * 1024 * 10]; // 10 MB
new Random().NextBytes(buffer);
using var writer = new FileBufferingWriter(asyncIO: false);
writer.Write(buffer);
False(writer.TryGetWrittenContent(out _));
using var content = writer.GetWrittenContent();
True(buffer.AsSpan().SequenceEqual(content.Memory.Span));
}
public static void ReuseAfterCleanup(int threshold)
{
using var writer = new FileBufferingWriter(memoryThreshold: threshold, asyncIO: false);
var bytes = new byte[500];
for (byte i = 0; i < byte.MaxValue; i++)
{
bytes[i] = i;
}
writer.Write(bytes, 0, byte.MaxValue);
writer.Write(bytes.AsSpan(byte.MaxValue));
Equal(bytes.Length, writer.Length);
using (var manager = writer.GetWrittenContent())
Equal(bytes, manager.Memory.ToArray());
writer.Clear();
writer.Write(bytes, 0, byte.MaxValue);
writer.Write(bytes.AsSpan(byte.MaxValue));
Equal(bytes.Length, writer.Length);
using (var manager = writer.GetWrittenContent())
Equal(bytes, manager.Memory.ToArray());
}
public static void StressTest(int threshold)
{
var dict = new Dictionary <string, string>
{
{ "Key1", "Value1" },
{ "Key2", "Value2" }
};
var formatter = new BinaryFormatter();
using var writer = new FileBufferingWriter(memoryThreshold: threshold, asyncIO: false);
formatter.Serialize(writer, dict);
using var manager = writer.GetWrittenContent();
using var source = StreamSource.AsStream(manager.Memory);
Equal(dict, formatter.Deserialize(source));
}
public static void CompatWithReadOnlySequence(int threshold)
{
using var writer = new FileBufferingWriter(memoryThreshold: threshold, asyncIO: false);
var bytes = new byte[500];
for (byte i = 0; i < byte.MaxValue; i++)
{
bytes[i] = i;
}
writer.Write(bytes, 0, 450);
writer.Write(bytes.AsSpan(450));
Equal(bytes.Length, writer.Length);
using var source = writer.GetWrittenContent(10);
Equal(bytes, source.Sequence.ToArray());
}
public static void ReadWriteWithInitialCapacity(int threshold)
{
using var writer = new FileBufferingWriter(memoryThreshold: threshold, initialCapacity: 5, asyncIO: false);
var bytes = new byte[500];
for (byte i = 0; i < byte.MaxValue; i++)
{
bytes[i] = i;
}
writer.Write(bytes, 0, byte.MaxValue);
writer.Write(bytes.AsSpan(byte.MaxValue));
Equal(bytes.Length, writer.Length);
using var manager = writer.GetWrittenContent();
Equal(bytes, manager.Memory.ToArray());
if (writer.TryGetWrittenContent(out var content))
{
Equal(bytes, content.ToArray());
}
}
public static void BufferedReadWrite(int threshold)
{
using var writer = new FileBufferingWriter(memoryThreshold: threshold, asyncIO: false);
var bytes = new byte[500];
for (byte i = 0; i < byte.MaxValue; i++)
{
bytes[i] = i;
}
IBufferWriter <byte> buffer = writer;
buffer.Write(new ReadOnlySpan <byte>(bytes, 0, byte.MaxValue));
buffer.Write(bytes.AsSpan(byte.MaxValue));
Equal(bytes.Length, writer.Length);
using var manager = writer.GetWrittenContent();
Equal(bytes, manager.Memory.ToArray());
if (writer.TryGetWrittenContent(out var content))
{
Equal(bytes, content.ToArray());
}
}