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-rw-r--r--org.eclipse.jgit.test/tst/org/eclipse/jgit/util/TemporaryBufferTest.java196
1 files changed, 109 insertions, 87 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 d978804d57..01dcde29bd 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
@@ -1,44 +1,11 @@
/*
- * Copyright (C) 2008-2009, Google Inc.
- * and other copyright owners as documented in the project's IP log.
+ * Copyright (C) 2008-2009, Google Inc. and others
*
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Distribution License v. 1.0 which is available at
+ * https://www.eclipse.org/org/documents/edl-v10.php.
*
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.util;
@@ -61,6 +28,7 @@ import org.junit.Test;
public class TemporaryBufferTest {
@Test
public void testEmpty() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
try {
b.close();
@@ -75,6 +43,7 @@ public class TemporaryBufferTest {
@Test
public void testOneByte() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte test = (byte) new TestRng(getName()).nextInt();
try {
@@ -87,10 +56,8 @@ public class TemporaryBufferTest {
assertEquals(1, r.length);
assertEquals(test, r[0]);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(1, r.length);
assertEquals(test, r[0]);
@@ -102,6 +69,7 @@ public class TemporaryBufferTest {
@Test
public void testOneBlock_BulkWrite() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.Block.SZ);
@@ -118,10 +86,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -133,6 +99,7 @@ public class TemporaryBufferTest {
@Test
public void testOneBlockAndHalf_BulkWrite() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.Block.SZ * 3 / 2);
@@ -149,10 +116,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -164,6 +129,7 @@ public class TemporaryBufferTest {
@Test
public void testOneBlockAndHalf_SingleWrite() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.Block.SZ * 3 / 2);
@@ -178,10 +144,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -193,6 +157,7 @@ public class TemporaryBufferTest {
@Test
public void testOneBlockAndHalf_Copy() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.Block.SZ * 3 / 2);
@@ -208,10 +173,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -223,6 +186,7 @@ public class TemporaryBufferTest {
@Test
public void testLarge_SingleWrite() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.DEFAULT_IN_CORE_LIMIT * 3);
@@ -236,10 +200,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -253,18 +215,18 @@ public class TemporaryBufferTest {
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);
- assertArrayEquals(test, act);
+ try (TemporaryBuffer.Heap b = new TemporaryBuffer.Heap(cnt + 4)) {
+ b.write(test);
+ InputStream in = b.openInputStream();
+ byte[] act = new byte[cnt];
+ IO.readFully(in, act, 0, cnt);
+ assertArrayEquals(test, act);
+ }
}
@Test
public void testInCoreLimit_SwitchOnAppendByte() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.DEFAULT_IN_CORE_LIMIT + 1);
@@ -279,10 +241,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -294,6 +254,7 @@ public class TemporaryBufferTest {
@Test
public void testInCoreLimit_SwitchBeforeAppendByte() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.DEFAULT_IN_CORE_LIMIT * 3);
@@ -308,10 +269,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -323,6 +282,7 @@ public class TemporaryBufferTest {
@Test
public void testInCoreLimit_SwitchOnCopy() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final byte[] test = new TestRng(getName())
.nextBytes(TemporaryBuffer.DEFAULT_IN_CORE_LIMIT * 2);
@@ -340,10 +300,8 @@ public class TemporaryBufferTest {
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(test.length, r.length);
assertArrayEquals(test, r);
@@ -355,7 +313,7 @@ public class TemporaryBufferTest {
@Test
public void testDestroyWhileOpen() throws IOException {
- @SuppressWarnings("resource" /* java 7 */)
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
try {
b.write(new TestRng(getName())
@@ -367,6 +325,7 @@ public class TemporaryBufferTest {
@Test
public void testRandomWrites() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
final TemporaryBuffer b = new TemporaryBuffer.LocalFile(null);
final TestRng rng = new TestRng(getName());
final int max = TemporaryBuffer.DEFAULT_IN_CORE_LIMIT * 2;
@@ -399,10 +358,8 @@ public class TemporaryBufferTest {
assertEquals(expect.length, r.length);
assertArrayEquals(expect, r);
}
- {
- final ByteArrayOutputStream o = new ByteArrayOutputStream();
+ try (ByteArrayOutputStream o = new ByteArrayOutputStream()) {
b.writeTo(o, null);
- o.close();
final byte[] r = o.toByteArray();
assertEquals(expect.length, r.length);
assertArrayEquals(expect, r);
@@ -414,16 +371,16 @@ public class TemporaryBufferTest {
@Test
public void testHeap() throws IOException {
- @SuppressWarnings("resource" /* java 7 */)
- final TemporaryBuffer b = new TemporaryBuffer.Heap(2 * 8 * 1024);
- final byte[] r = new byte[8 * 1024];
- b.write(r);
- b.write(r);
- try {
- b.write(1);
- fail("accepted too many bytes of data");
- } catch (IOException e) {
- assertEquals("In-memory buffer limit exceeded", e.getMessage());
+ try (TemporaryBuffer b = new TemporaryBuffer.Heap(2 * 8 * 1024)) {
+ final byte[] r = new byte[8 * 1024];
+ b.write(r);
+ b.write(r);
+ try {
+ b.write(1);
+ fail("accepted too many bytes of data");
+ } catch (IOException e) {
+ assertEquals("In-memory buffer limit exceeded", e.getMessage());
+ }
}
}
@@ -449,4 +406,69 @@ public class TemporaryBufferTest {
}
}
}
+
+ @Test
+ public void testHeapToByteArrayWithLimit() throws IOException {
+ int sz = 2 * Block.SZ;
+ try (TemporaryBuffer b = new TemporaryBuffer.Heap(sz / 2, sz)) {
+ for (int i = 0; i < sz; i++) {
+ b.write('a' + i % 26);
+ }
+ byte[] prefix = b.toByteArray(5);
+ assertEquals(5, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ prefix = b.toByteArray(Block.SZ + 37);
+ assertEquals(Block.SZ + 37, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ prefix = b.toByteArray(sz);
+ assertEquals(sz, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ prefix = b.toByteArray(sz + 37);
+ assertEquals(sz, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ }
+ }
+
+ @Test
+ public void testFileToByteArrayWithLimit() throws IOException {
+ @SuppressWarnings("resource") // Buffer is explicitly destroyed in finally block
+ TemporaryBuffer b = new TemporaryBuffer.LocalFile(null, 2 * Block.SZ);
+ int sz = 3 * Block.SZ;
+ try {
+ for (int i = 0; i < sz; i++) {
+ b.write('a' + i % 26);
+ }
+ b.close();
+ byte[] prefix = b.toByteArray(5);
+ assertEquals(5, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ prefix = b.toByteArray(Block.SZ + 37);
+ assertEquals(Block.SZ + 37, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ prefix = b.toByteArray(sz);
+ assertEquals(sz, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ prefix = b.toByteArray(sz + 37);
+ assertEquals(sz, prefix.length);
+ for (int i = 0; i < prefix.length; i++) {
+ assertEquals('a' + i % 26, prefix[i]);
+ }
+ } finally {
+ b.destroy();
+ }
+ }
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-16 08:54:45 +0000