From c01336fb8a589ded50b7f9b5234dcbdc4c4e7a30 Mon Sep 17 00:00:00 2001
From: Harald Kuhr <harald.kuhr@gmail.com>
Date: Fri, 14 Oct 2022 18:16:18 +0200
Subject: [PATCH] #687 #691 Stream performance regressions, now with JDK 11
 support...

---
 .../stream/BufferedChannelImageInputStreamTest.java    | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/BufferedChannelImageInputStreamTest.java b/imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/BufferedChannelImageInputStreamTest.java
index a38dcfcb..579f13e6 100755
--- a/imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/BufferedChannelImageInputStreamTest.java
+++ b/imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/BufferedChannelImageInputStreamTest.java
@@ -402,18 +402,16 @@ public class BufferedChannelImageInputStreamTest {
     @Test
     public void testCloseStream() throws IOException {
         // Create wrapper stream
-        FileInputStream mock = mock(FileInputStream.class);
-        when(mock.getChannel()).thenCallRealMethod();
-        ImageInputStream stream = new BufferedChannelImageInputStream(mock);
-        reset(mock);
+        FileInputStream input = spy(new FileInputStream(randomDataToFile(new byte[0])));
+        ImageInputStream stream = new BufferedChannelImageInputStream(input);
+        reset(input);
 
         stream.close();
-        verify(mock, only()).close();
+        verify(input, only()).close();
     }
 
     @Test
     public void testCloseChannel() throws IOException {
-        // Create wrapper stream
         SeekableByteChannel mock = mock(SeekableByteChannel.class);
         ImageInputStream stream = new BufferedChannelImageInputStream(mock);