public static void NullInputsInConstructor_ExpectArgumentNullException(Stream stream, Encoding encoding, ArrayPool <byte> bytePool, ArrayPool <char> charPool)
{
Assert.Throws <ArgumentNullException>(() =>
{
var httpRequestStreamReader = new ProtoResponseStreamWriter(stream, encoding, 1, bytePool, charPool);
});
}
public static async Task StreamDisposed_ExpectedObjectDisposedExceptionAsync(Func <ProtoResponseStreamWriter, Task> function)
{
var httpResponseStreamWriter = new ProtoResponseStreamWriter(new MemoryStream(), Encoding.UTF8, 10, ArrayPool <byte> .Shared, ArrayPool <char> .Shared);
httpResponseStreamWriter.Dispose();
await Assert.ThrowsAsync <ObjectDisposedException>(() =>
{
return(function(httpResponseStreamWriter));
});
}
public static void StreamDisposed_ExpectedObjectDisposedException(Action <ProtoResponseStreamWriter> action)
{
var httpResponseStreamWriter = new ProtoResponseStreamWriter(new MemoryStream(), Encoding.UTF8, 10, ArrayPool <byte> .Shared, ArrayPool <char> .Shared);
httpResponseStreamWriter.Dispose();
Assert.Throws <ObjectDisposedException>(() =>
{
action(httpResponseStreamWriter);
});
}
public async Task WriteCharArrayAsync_WritesToStream(int byteLength)
{
// Arrange
var stream = new TestMemoryStream();
var writer = new ProtoResponseStreamWriter(stream, Encoding.UTF8);
// Act
using (writer)
await writer.WriteAsync((new string('a', byteLength)).ToCharArray());
// Assert
Assert.Equal(byteLength, stream.Length);
}
public async Task NoDataWritten_FlushAsync_DoesNotFlushUnderlyingStream()
{
// Arrange
var stream = new TestMemoryStream();
var writer = new ProtoResponseStreamWriter(stream, Encoding.UTF8);
// Act
await writer.FlushAsync();
// Assert
Assert.Equal(0, stream.FlushAsyncCallCount);
Assert.Equal(0, stream.Length);
}
public async Task DoesNotDispose_UnderlyingStream_OnDisposingWriter()
{
// Arrange
var stream = new TestMemoryStream();
var writer = new ProtoResponseStreamWriter(stream, Encoding.UTF8);
// Act
await writer.WriteAsync("Hello world");
writer.Dispose();
// Assert
Assert.Equal(0, stream.DisposeCallCount);
}
public async Task FlushesBuffer_OnDispose(int byteLength)
{
// Arrange
var stream = new TestMemoryStream();
var writer = new ProtoResponseStreamWriter(stream, Encoding.UTF8);
await writer.WriteAsync(new string('a', byteLength));
// Act
writer.Dispose();
// Assert
Assert.Equal(0, stream.FlushCallCount);
Assert.Equal(0, stream.FlushAsyncCallCount);
Assert.Equal(byteLength, stream.Length);
}
public async Task WritesData_InExpectedEncoding(string data, string encodingName)
{
// Arrange
var encoding = Encoding.GetEncoding(encodingName);
var expectedBytes = encoding.GetBytes(data);
var stream = new MemoryStream();
var writer = new ProtoResponseStreamWriter(stream, encoding);
// Act
using (writer)
await writer.WriteAsync(data);
// Assert
Assert.Equal(expectedBytes, stream.ToArray());
}
public async Task DoesNotWriteBOM()
{
// Arrange
var memoryStream = new MemoryStream();
var encodingWithBOM = new UTF8Encoding(encoderShouldEmitUTF8Identifier: true);
var writer = new ProtoResponseStreamWriter(memoryStream, encodingWithBOM);
var expectedData = new byte[] { 97, 98, 99, 100 }; // without BOM
// Act
using (writer)
await writer.WriteAsync("abcd");
// Assert
Assert.Equal(expectedData, memoryStream.ToArray());
}
public async Task WriteCharAsync_WritesToStream(int byteLength)
{
// Arrange
var stream = new TestMemoryStream();
var writer = new ProtoResponseStreamWriter(stream, Encoding.UTF8);
// Act
using (writer)
for (var i = 0; i < byteLength; i++)
{
await writer.WriteAsync('a');
}
// Assert
Assert.Equal(byteLength, stream.Length);
}
public async Task FlushesBuffer_ButNotStream_OnFlushAsync(int byteLength)
{
// Arrange
var stream = new TestMemoryStream();
var writer = new ProtoResponseStreamWriter(stream, Encoding.UTF8);
await writer.WriteAsync(new string('a', byteLength));
var expectedWriteCount = Math.Ceiling((double)byteLength / ProtoResponseStreamWriter.DefaultBufferSize);
// Act
await writer.FlushAsync();
// Assert
Assert.Equal(0, stream.FlushAsyncCallCount);
Assert.Equal(expectedWriteCount, stream.WriteAsyncCallCount);
Assert.Equal(byteLength, stream.Length);
}
public async Task WritesData_OfDifferentLength_InExpectedEncoding(
char character,
int charCount,
string encodingName)
{
// Arrange
var encoding = Encoding.GetEncoding(encodingName);
var data = new string(character, charCount);
var expectedBytes = encoding.GetBytes(data);
var stream = new MemoryStream();
var writer = new ProtoResponseStreamWriter(stream, encoding);
// Act
using (writer)
await writer.WriteAsync(data);
// Assert
Assert.Equal(expectedBytes, stream.ToArray());
}
public void ProtoResponseStreamWriter_UsingPooledBuffers()
{
// Arrange
var encoding = Encoding.UTF8;
var stream = new MemoryStream();
var expectedBytes = encoding.GetBytes("Hello, World!");
using (var writer = new ProtoResponseStreamWriter(
stream,
encoding,
1024,
ArrayPool <byte> .Shared,
ArrayPool <char> .Shared))
// Act
writer.Write("Hello, World!");
// Assert
Assert.Equal(expectedBytes, stream.ToArray());
}
public async Task ProtoResponseStreamWriter_WritesDataCorrectly_ForCharactersHavingSurrogatePairs(int characterSize)
{
// Arrange
// Here "𐐀" (called Deseret Long I) actually represents 2 characters. Try to make this character split across
// the boundary
var content = new string('a', characterSize - 1) + "𐐀";
var stream = new TestMemoryStream();
var writer = new ProtoResponseStreamWriter(stream, Encoding.Unicode);
// Act
await writer.WriteAsync(content);
await writer.FlushAsync();
// Assert
stream.Seek(0, SeekOrigin.Begin);
var streamReader = new StreamReader(stream, Encoding.Unicode);
var actualContent = await streamReader.ReadToEndAsync();
Assert.Equal(content, actualContent);
}
public async Task FlushWriteThrows_DontFlushInDispose(int byteLength)
{
// Arrange
var stream = new TestMemoryStream()
{
ThrowOnWrite = true
};
var writer = new ProtoResponseStreamWriter(stream, Encoding.UTF8);
await writer.WriteAsync(new string('a', byteLength));
await Assert.ThrowsAsync <IOException>(() => writer.FlushAsync());
// Act
writer.Dispose();
// Assert
Assert.Equal(1, stream.WriteAsyncCallCount);
Assert.Equal(0, stream.WriteCallCount);
Assert.Equal(0, stream.FlushCallCount);
Assert.Equal(0, stream.FlushAsyncCallCount);
Assert.Equal(0, stream.Length);
}
