From 12d7976055fc36b8f3aed1a881b79f784e5fd040 Mon Sep 17 00:00:00 2001
From: Bas van der Linden <de_bas@hotmail.com>
Date: Sun, 12 Jul 2020 15:12:18 +0200
Subject: [PATCH] Added test for ByteString.CopyFrom(ReadOnlySpan<byte> bytes)

---
 csharp/src/Google.Protobuf.Test/ByteStringTest.cs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/csharp/src/Google.Protobuf.Test/ByteStringTest.cs b/csharp/src/Google.Protobuf.Test/ByteStringTest.cs
index 0ef8d8f4e7..e31ecd1839 100644
--- a/csharp/src/Google.Protobuf.Test/ByteStringTest.cs
+++ b/csharp/src/Google.Protobuf.Test/ByteStringTest.cs
@@ -110,6 +110,18 @@ namespace Google.Protobuf
             Assert.AreEqual(10, bs[0]);
         }
 
+        [Test]
+        public void CopyFromReadOnlySpanCopiesContents()
+        {
+            byte[] data = new byte[1];
+            data[0] = 10;
+            ReadOnlySpan<byte> byteSpan = data;
+            var bs = ByteString.CopyFrom(byteSpan);
+            Assert.AreEqual(10, bs[0]);
+            data[0] = 5;
+            Assert.AreEqual(10, bs[0]);
+        }
+
         [Test]
         public void ToByteArrayCopiesContents()
         {
@@ -249,5 +261,6 @@ namespace Google.Protobuf
             var copied = byteString.Memory.ToArray();
             CollectionAssert.AreEqual(byteString, copied);
         }
+
     }
 }
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