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Use ReadOnlyMemory<byte> for binary data to eliminate UTF-16 transcoding (#1070)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
Co-authored-by: ericstj <8918108+ericstj@users.noreply.github.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
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Copilot 2026-02-19 14:08:05 -08:00 • committed by GitHub
commit 80b1ad21d7
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1 changed files with 400 additions and 103 deletions
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11
tests/ModelContextProtocol.Tests/Client/McpClientTests.cs
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@ -160,11 +160,7 @@ public class McpClientTests : ClientServerTestBase
new SamplingMessage
{
Role = Role.User,
Content = [new ImageContentBlock
{
MimeType = "image/png",
Data = Convert.ToBase64String(new byte[] { 1, 2, 3 })
}],
Content = [ImageContentBlock.FromBytes((byte[])[1, 2, 3], "image/png")],
}
],
MaxTokens = 100
@ -196,7 +192,8 @@ public class McpClientTests : ClientServerTestBase
// Assert
Assert.NotNull(result);
Assert.Equal(expectedData, result.Content.OfType<ImageContentBlock>().FirstOrDefault()?.Data);
var imageData = result.Content.OfType<ImageContentBlock>().FirstOrDefault()?.Data.ToArray() ?? [];
Assert.Equal(expectedData, System.Text.Encoding.UTF8.GetString(imageData));
Assert.Equal("test-model", result.Model);
Assert.Equal(Role.Assistant, result.Role);
Assert.Equal("endTurn", result.StopReason);
@ -211,7 +208,7 @@ public class McpClientTests : ClientServerTestBase
var mockChatClient = new Mock<IChatClient>();
var resource = new BlobResourceContents
{
Blob = data,
Blob = System.Text.Encoding.UTF8.GetBytes(data),
MimeType = "application/octet-stream",
Uri = "data:application/octet-stream"
};