X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/0f74b22fb1b64f983debb78d7946eb26728fcc52..0f644e242ef37c911ad3dc25aca8135c339de349:/sdk/go/streamer/streamer_test.go

diff --git a/sdk/go/streamer/streamer_test.go b/sdk/go/streamer/streamer_test.go
index 80aeb26897..f8ddbf5a4c 100644
--- a/sdk/go/streamer/streamer_test.go
+++ b/sdk/go/streamer/streamer_test.go
@@ -1,3 +1,7 @@
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: Apache-2.0
+
 package streamer
 
 import (
@@ -365,3 +369,13 @@ func (s *StandaloneSuite) TestManyReaders(c *C) {
 	writer.Write([]byte("baz"))
 	writer.Close()
 }
+
+func (s *StandaloneSuite) TestMultipleCloseNoPanic(c *C) {
+	buffer := make([]byte, 100)
+	tr := AsyncStreamFromSlice(buffer)
+	sr := tr.MakeStreamReader()
+	c.Check(sr.Close(), IsNil)
+	c.Check(sr.Close(), Equals, ErrAlreadyClosed)
+	c.Check(tr.Close(), IsNil)
+	c.Check(tr.Close(), Equals, ErrAlreadyClosed)
+}