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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.IO;
using System.Net.Http.Headers;
using System.Threading.Tasks;
namespace System.Net.Http.Formatting.Mocks
{
public delegate bool TryComputeLengthDelegate(out long length);
public class MockHttpContent : HttpContent
{
public MockHttpContent()
{
}
public MockHttpContent(HttpContent innerContent)
{
InnerContent = innerContent;
Headers.ContentType = innerContent.Headers.ContentType;
}
public MockHttpContent(MediaTypeHeaderValue contentType)
{
if (contentType == null)
{
throw new ArgumentNullException("contentType");
}
Headers.ContentType = contentType;
}
public MockHttpContent(string contentType)
{
if (String.IsNullOrWhiteSpace(contentType))
{
throw new ArgumentNullException("contentType");
}
Headers.ContentType = new MediaTypeHeaderValue(contentType);
}
public HttpContent InnerContent { get; set; }
public Action<bool> DisposeCallback { get; set; }
public TryComputeLengthDelegate TryComputeLengthCallback { get; set; }
public Action<Stream, TransportContext> SerializeToStreamCallback { get; set; }
public Func<Stream, TransportContext, Task> SerializeToStreamAsyncCallback { get; set; }
protected override void Dispose(bool disposing)
{
if (DisposeCallback != null)
{
DisposeCallback(disposing);
}
base.Dispose(disposing);
}
protected override Task SerializeToStreamAsync(Stream stream, TransportContext context)
{
if (SerializeToStreamAsyncCallback != null)
{
return SerializeToStreamAsyncCallback(stream, context);
}
else if (InnerContent != null)
{
return InnerContent.CopyToAsync(stream, context);
}
else
{
throw new InvalidOperationException("Construct with inner HttpContent or set SerializeToStreamCallback first.");
}
}
protected override bool TryComputeLength(out long length)
{
if (TryComputeLengthCallback != null)
{
return TryComputeLengthCallback(out length);
}
if (InnerContent != null)
{
long? len = InnerContent.Headers.ContentLength;
length = len.HasValue ? len.Value : 0L;
return len.HasValue;
}
length = 0L;
return false;
}
}
}
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