TemporaryBuffer: Fix reading from in-memory InputStream

I had the conditions wrong here, causing the in-memory InputStream
to always appear to be at EOF.

Change-Id: I6811d6187a34eaf1fd6c5002550d631decdfc391
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/TemporaryBufferTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/TemporaryBufferTest.java
index cc4cad5ee1..eb4fb1e87d 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/TemporaryBufferTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/TemporaryBufferTest.java
@@ -52,6 +52,7 @@ import static org.junit.Assert.fail;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.Arrays;
 
 import org.eclipse.jgit.junit.TestRng;
@@ -249,6 +250,20 @@ public class TemporaryBufferTest {
 	}
 
 	@Test
+	public void testInCoreInputStream() throws IOException {
+		final int cnt = 256;
+		final byte[] test = new TestRng(getName()).nextBytes(cnt);
+		final TemporaryBuffer.Heap b = new TemporaryBuffer.Heap(cnt + 4);
+		b.write(test);
+		b.close();
+
+		InputStream in = b.openInputStream();
+		byte[] act = new byte[cnt];
+		IO.readFully(in, act, 0, cnt);
+		assertTrue(Arrays.equals(test, act));
+	}
+
+	@Test
 	public void testInCoreLimit_SwitchOnAppendByte() throws IOException {
 		final TemporaryBuffer b = new TemporaryBuffer.LocalFile();
 		final byte[] test = new TestRng(getName())