commit 53708e2f1536bda500ca109ad82869122b776f25
author Jan Tattermusch <jtattermusch@google.com> Mon Jun 08 17:03:03 2020 +0200
committer Jan Tattermusch <jtattermusch@google.com> Mon Jun 08 17:03:03 2020 +0200
tree a4ddf922b79e165ca43a97c07e6be00b6662a7dd
parent e14a5c8fe67719315694ee0b8d355734fe587ef0

test writing to a stackalloc buffer

csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs

diff --git a/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs b/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs
index fb83ff4..36a2f02 100644
--- a/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs
+++ b/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs
@@ -127,7 +127,15 @@
                 var segmentedBufferWriter = new ArrayBufferWriter<byte>();
                 segmentedBufferWriter.MaxGrowBy = blockSize;
                 message.WriteTo(segmentedBufferWriter);
-                Assert.AreEqual(bytes, bufferWriter.WrittenSpan.ToArray());
+                Assert.AreEqual(bytes, segmentedBufferWriter.WrittenSpan.ToArray());
+            }
+
+            // if the full message is small enough, try serializing directly into stack-allocated buffer
+            if (bytes.Length <= 256)
+            {
+                Span<byte> stackAllocBuffer = stackalloc byte[bytes.Length];
+                message.WriteTo(stackAllocBuffer);
+                Assert.AreEqual(bytes, stackAllocBuffer.ToArray());
             }
         }
     }