public async Task CancelPendingRead_CancelThenResumeReading_ReturnData()
{
// Arrange
var testPipe = new Pipe();
await testPipe.Writer.WriteAsync(new byte[] { (byte)'A' }).AsTask().DefaultTimeout();
var r = new Base64PipeReader(testPipe.Reader);
// Act 1
var readTask = r.ReadAsync().AsTask().DefaultTimeout();
r.CancelPendingRead();
var result = await readTask.DefaultTimeout();
// Assert 1
Assert.IsTrue(result.IsCanceled);
// Act 2
r.AdvanceTo(result.Buffer.Start, result.Buffer.End);
await testPipe.Writer.WriteAsync(new byte[] { (byte)'A', (byte)'=', (byte)'=' }).AsTask().DefaultTimeout();
result = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 2
CollectionAssert.AreEqual(Convert.FromBase64String("AA=="), result.Buffer.ToArray());
}
public async Task ReadAsync_MultipleBase64Fragements_Success()
{
// Arrange
var base64Data = Encoding.UTF8.GetBytes("AAAAAAYKBHRlc3Q=gAAAABBncnBjLXN0YXR1czogMA0K");
var testPipe = new Pipe();
await testPipe.Writer.WriteAsync(base64Data).AsTask().DefaultTimeout();
testPipe.Writer.Complete();
var r = new Base64PipeReader(testPipe.Reader);
// Act 1
var result1 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 1
Assert.AreEqual("AAAAAAYKBHRlc3Q=", Convert.ToBase64String(result1.Buffer.ToArray()));
// Act 2
r.AdvanceTo(result1.Buffer.End);
var result2 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 2
Assert.AreEqual("gAAAABBncnBjLXN0YXR1czogMA0K", Convert.ToBase64String(result2.Buffer.ToArray()));
// Act 3
r.AdvanceTo(result2.Buffer.End);
var result3 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 3
Assert.IsTrue(result3.IsCompleted);
Assert.AreEqual(0, result3.Buffer.Length);
}
public async Task ReadAsync_ByteAtATime_Success()
{
// Arrange
var initialData = Encoding.UTF8.GetBytes("Hello world");
var base64Data = Encoding.UTF8.GetBytes(Convert.ToBase64String(initialData));
var testPipe = new Pipe();
var r = new Base64PipeReader(testPipe.Reader);
// Act
var resultTask = r.ReadAsync().AsTask().DefaultTimeout();
Assert.IsFalse(resultTask.IsCompleted);
for (var i = 0; i < base64Data.Length; i++)
{
await testPipe.Writer.WriteAsync(base64Data.AsMemory(i, 1));
await Task.Delay(10);
}
var result = await resultTask;
// Assert
Assert.AreEqual(3, result.Buffer.Length);
r.AdvanceTo(result.Buffer.Start, result.Buffer.End);
result = await r.ReadAsync().AsTask().DefaultTimeout();
CollectionAssert.AreEqual(initialData, result.Buffer.ToArray());
}
public async Task ReadAsync_LargeMultipleBase64Fragements_Success()
{
// Arrange
const int Messages = 10;
var sb = new StringBuilder();
for (var i = 0; i < 1000; i++)
{
sb.AppendLine("The quick brown fox jumped over the lazy dog.");
}
var initialData = Encoding.UTF8.GetBytes(sb.ToString());
var base64Data = Encoding.UTF8.GetBytes(Convert.ToBase64String(initialData));
var testPipe = new Pipe();
var writeTask = Task.Run(async() =>
{
for (var i = 0; i < Messages; i++)
{
await testPipe.Writer.WriteAsync(base64Data).AsTask().DefaultTimeout();
}
testPipe.Writer.Complete();
});
var r = new Base64PipeReader(testPipe.Reader);
// Act & Assert
var readMessages = 0;
while (readMessages < Messages)
{
ReadResult result = default;
while (result.Buffer.Length < initialData.Length)
{
if (result.Buffer.Length > 0)
{
r.AdvanceTo(result.Buffer.Start, result.Buffer.End);
}
result = await r.ReadAsync().AsTask().DefaultTimeout();
}
var message = result.Buffer.Slice(0, initialData.Length);
CollectionAssert.AreEqual(initialData, message.ToArray());
r.AdvanceTo(message.End);
readMessages++;
}
var endResult = await r.ReadAsync().AsTask().DefaultTimeout();
Assert.IsTrue(endResult.IsCompleted);
}
public async Task ReadAsync_ByteAtATimeOnAdvance_Success()
{
// Arrange
var initialData = Encoding.UTF8.GetBytes("Hello world");
var base64Data = Encoding.UTF8.GetBytes(Convert.ToBase64String(initialData));
var testPipe = new Pipe();
var onAdvancePipeReader = new OnAdvancePipeReader(testPipe, base64Data);
var r = new Base64PipeReader(onAdvancePipeReader);
// Act 1
var result1 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 1
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hel"), result1.Buffer.ToArray());
// Act 2
r.AdvanceTo(result1.Buffer.Start, result1.Buffer.End);
var result2 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 2
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hello "), result2.Buffer.ToArray());
// Act 3
r.AdvanceTo(result2.Buffer.Start, result2.Buffer.End);
var result3 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 3
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hello wor"), result3.Buffer.ToArray());
// Act 4
r.AdvanceTo(result3.Buffer.Start, result3.Buffer.End);
var result4 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 4
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hello world"), result4.Buffer.ToArray());
Assert.IsFalse(result4.IsCompleted);
// Act 4
r.AdvanceTo(result4.Buffer.End, result4.Buffer.End);
var result5 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 4
Assert.IsTrue(result5.IsCompleted);
}
public async Task ReadAsync_MultipleSuccesfulReadsAndWrites_Success()
{
// Arrange
var initialData = Encoding.UTF8.GetBytes("Hello world");
var base64Data = Encoding.UTF8.GetBytes(Convert.ToBase64String(initialData));
var testPipe = new Pipe();
var r = new Base64PipeReader(testPipe.Reader);
// Act 1
await testPipe.Writer.WriteAsync(base64Data.AsMemory(0, 5));
var result1 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 1
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hel"), result1.Buffer.ToArray());
// Act 2
r.AdvanceTo(result1.Buffer.Start, result1.Buffer.End);
await testPipe.Writer.WriteAsync(base64Data.AsMemory(5, 5));
var result2 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 2
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hello "), result2.Buffer.ToArray());
// Act 3
r.AdvanceTo(result2.Buffer.Start, result2.Buffer.End);
await testPipe.Writer.WriteAsync(base64Data.AsMemory(10));
var result3 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 3
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hello world"), result3.Buffer.ToArray());
// Act 4
r.AdvanceTo(result3.Buffer.End, result3.Buffer.End);
await testPipe.Writer.WriteAsync(base64Data);
var result4 = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert 4
CollectionAssert.AreEqual(Encoding.UTF8.GetBytes("Hello world"), result4.Buffer.ToArray());
}
public async Task CancelPendingRead_CancelOnFirstRead_CancelResult()
{
// Arrange
var testPipe = new Pipe();
var r = new Base64PipeReader(testPipe.Reader);
// Act
var readTask = r.ReadAsync().AsTask().DefaultTimeout();
r.CancelPendingRead();
var result = await readTask;
// Assert
Assert.IsTrue(result.IsCanceled);
}
public async Task CancelPendingRead_CancelOnSecondRead_CancelResult()
{
// Arrange
var testPipe = new Pipe();
await testPipe.Writer.WriteAsync(new byte[] { (byte)'a' }).AsTask().DefaultTimeout();
var r = new Base64PipeReader(testPipe.Reader);
// Act
var readTask = r.ReadAsync().AsTask().DefaultTimeout();
r.CancelPendingRead();
var result = await readTask;
// Assert
Assert.IsTrue(result.IsCanceled);
}
public async Task ReadAsync_SmallData_Success()
{
// Arrange
var initialData = Encoding.UTF8.GetBytes("Hello world");
var base64Data = Encoding.UTF8.GetBytes(Convert.ToBase64String(initialData));
var testPipe = new Pipe();
await testPipe.Writer.WriteAsync(base64Data);
var r = new Base64PipeReader(testPipe.Reader);
// Act
var result = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert
Assert.Greater(result.Buffer.Length, 0);
CollectionAssert.AreEqual(initialData, result.Buffer.ToArray());
}
public async Task ReadAsync_RoundtripData_Success(string text)
{
// Arrange
var initialData = Encoding.UTF8.GetBytes(text);
var base64Data = Encoding.UTF8.GetBytes(Convert.ToBase64String(initialData));
var testPipe = new Pipe();
await testPipe.Writer.WriteAsync(base64Data).AsTask().DefaultTimeout();
testPipe.Writer.Complete();
var r = new Base64PipeReader(testPipe.Reader);
// Act
var result = await r.ReadAsync().AsTask().DefaultTimeout();
// Assert
CollectionAssert.AreEqual(initialData, result.Buffer.ToArray());
}
public async Task ReadAsync_MultipleWrites_Success()
{
// Arrange
var initialData = Encoding.UTF8.GetBytes("Hello world");
var base64Data = Encoding.UTF8.GetBytes(Convert.ToBase64String(initialData));
var testPipe = new Pipe();
await testPipe.Writer.WriteAsync(base64Data.AsMemory(0, 2));
var r = new Base64PipeReader(testPipe.Reader);
// Act
var resultTask = r.ReadAsync();
Assert.IsFalse(resultTask.IsCompleted);
await testPipe.Writer.WriteAsync(base64Data.AsMemory(2));
var result = await resultTask;
// Assert
Assert.Greater(result.Buffer.Length, 0);
CollectionAssert.AreEqual(initialData, result.Buffer.ToArray());
}
public async Task ReadAsync_NotEnoughData_Error()
{
// Arrange
var testPipe = new Pipe();
await testPipe.Writer.WriteAsync(new byte[] { (byte)'a' }).AsTask().DefaultTimeout();
testPipe.Writer.Complete();
var r = new Base64PipeReader(testPipe.Reader);
// Act
var ex = await ExceptionAssert.ThrowsAsync <InvalidOperationException>(() => r.ReadAsync().AsTask()).DefaultTimeout();
// Assert
Assert.AreEqual("Unexpected end of data when reading base64 content.", ex.Message);
}