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- /*
- * Copyright (C) 2010, Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * 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
- *
- * 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.
- */
-
- package org.eclipse.jgit.lib;
-
- import static org.eclipse.jgit.lib.Constants.OBJ_BLOB;
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertNotNull;
- import static org.junit.Assert.assertNotSame;
- import static org.junit.Assert.assertSame;
- import static org.junit.Assert.assertTrue;
- import static org.junit.Assert.fail;
-
- import java.io.ByteArrayInputStream;
- import java.io.ByteArrayOutputStream;
- import java.io.IOException;
- import java.util.Arrays;
-
- import org.eclipse.jgit.errors.LargeObjectException;
- import org.eclipse.jgit.errors.MissingObjectException;
- import org.eclipse.jgit.junit.JGitTestUtil;
- import org.eclipse.jgit.junit.TestRng;
- import org.junit.Test;
-
- public class ObjectLoaderTest {
- private TestRng rng;
-
- private TestRng getRng() {
- if (rng == null)
- rng = new TestRng(JGitTestUtil.getName());
- return rng;
- }
-
- @Test
- public void testSmallObjectLoader() throws MissingObjectException,
- IOException {
- final byte[] act = getRng().nextBytes(512);
- final ObjectLoader ldr = new ObjectLoader.SmallObject(OBJ_BLOB, act);
-
- assertEquals(OBJ_BLOB, ldr.getType());
- assertEquals(act.length, ldr.getSize());
- assertFalse("not is large", ldr.isLarge());
- assertSame(act, ldr.getCachedBytes());
- assertSame(act, ldr.getCachedBytes(1));
- assertSame(act, ldr.getCachedBytes(Integer.MAX_VALUE));
-
- byte[] copy = ldr.getBytes();
- assertNotSame(act, copy);
- assertTrue("same content", Arrays.equals(act, copy));
-
- copy = ldr.getBytes(1);
- assertNotSame(act, copy);
- assertTrue("same content", Arrays.equals(act, copy));
-
- copy = ldr.getBytes(Integer.MAX_VALUE);
- assertNotSame(act, copy);
- assertTrue("same content", Arrays.equals(act, copy));
-
- ObjectStream in = ldr.openStream();
- assertNotNull("has stream", in);
- assertTrue("is small stream", in instanceof ObjectStream.SmallStream);
- assertEquals(OBJ_BLOB, in.getType());
- assertEquals(act.length, in.getSize());
- assertEquals(act.length, in.available());
- assertTrue("mark supported", in.markSupported());
- copy = new byte[act.length];
- assertEquals(act.length, in.read(copy));
- assertEquals(0, in.available());
- assertEquals(-1, in.read());
- assertTrue("same content", Arrays.equals(act, copy));
-
- ByteArrayOutputStream tmp = new ByteArrayOutputStream();
- ldr.copyTo(tmp);
- assertTrue("same content", Arrays.equals(act, tmp.toByteArray()));
- }
-
- @Test
- public void testLargeObjectLoader() throws MissingObjectException,
- IOException {
- final byte[] act = getRng().nextBytes(512);
- final ObjectLoader ldr = new ObjectLoader() {
- @Override
- public byte[] getCachedBytes() throws LargeObjectException {
- throw new LargeObjectException();
- }
-
- @Override
- public long getSize() {
- return act.length;
- }
-
- @Override
- public int getType() {
- return OBJ_BLOB;
- }
-
- @Override
- public ObjectStream openStream() throws MissingObjectException,
- IOException {
- return new ObjectStream.Filter(getType(), act.length,
- new ByteArrayInputStream(act));
- }
- };
-
- assertEquals(OBJ_BLOB, ldr.getType());
- assertEquals(act.length, ldr.getSize());
- assertTrue("is large", ldr.isLarge());
-
- try {
- ldr.getCachedBytes();
- fail("did not throw on getCachedBytes()");
- } catch (LargeObjectException tooBig) {
- // expected
- }
-
- try {
- ldr.getBytes();
- fail("did not throw on getBytes()");
- } catch (LargeObjectException tooBig) {
- // expected
- }
-
- try {
- ldr.getCachedBytes(64);
- fail("did not throw on getCachedBytes(64)");
- } catch (LargeObjectException tooBig) {
- // expected
- }
-
- byte[] copy = ldr.getCachedBytes(1024);
- assertNotSame(act, copy);
- assertTrue("same content", Arrays.equals(act, copy));
-
- ObjectStream in = ldr.openStream();
- assertNotNull("has stream", in);
- assertEquals(OBJ_BLOB, in.getType());
- assertEquals(act.length, in.getSize());
- assertEquals(act.length, in.available());
- assertTrue("mark supported", in.markSupported());
- copy = new byte[act.length];
- assertEquals(act.length, in.read(copy));
- assertEquals(0, in.available());
- assertEquals(-1, in.read());
- assertTrue("same content", Arrays.equals(act, copy));
-
- ByteArrayOutputStream tmp = new ByteArrayOutputStream();
- ldr.copyTo(tmp);
- assertTrue("same content", Arrays.equals(act, tmp.toByteArray()));
- }
-
- @Test
- public void testLimitedGetCachedBytes() throws LargeObjectException,
- MissingObjectException, IOException {
- byte[] act = getRng().nextBytes(512);
- ObjectLoader ldr = new ObjectLoader.SmallObject(OBJ_BLOB, act) {
- @Override
- public boolean isLarge() {
- return true;
- }
- };
- assertTrue("is large", ldr.isLarge());
-
- try {
- ldr.getCachedBytes(10);
- fail("Did not throw LargeObjectException");
- } catch (LargeObjectException tooBig) {
- // Expected result.
- }
-
- byte[] copy = ldr.getCachedBytes(512);
- assertNotSame(act, copy);
- assertTrue("same content", Arrays.equals(act, copy));
-
- copy = ldr.getCachedBytes(1024);
- assertNotSame(act, copy);
- assertTrue("same content", Arrays.equals(act, copy));
- }
-
- @Test
- public void testLimitedGetCachedBytesExceedsJavaLimits()
- throws LargeObjectException, MissingObjectException, IOException {
- ObjectLoader ldr = new ObjectLoader() {
- @Override
- public boolean isLarge() {
- return true;
- }
-
- @Override
- public byte[] getCachedBytes() throws LargeObjectException {
- throw new LargeObjectException();
- }
-
- @Override
- public long getSize() {
- return Long.MAX_VALUE;
- }
-
- @Override
- public int getType() {
- return OBJ_BLOB;
- }
-
- @Override
- public ObjectStream openStream() throws MissingObjectException,
- IOException {
- return new ObjectStream() {
- @Override
- public long getSize() {
- return Long.MAX_VALUE;
- }
-
- @Override
- public int getType() {
- return OBJ_BLOB;
- }
-
- @Override
- public int read() throws IOException {
- fail("never should have reached read");
- return -1;
- }
-
- @Override
- public int read(byte b[], int off, int len) {
- fail("never should have reached read");
- return -1;
- }
- };
- }
- };
- assertTrue("is large", ldr.isLarge());
-
- try {
- ldr.getCachedBytes(10);
- fail("Did not throw LargeObjectException");
- } catch (LargeObjectException tooBig) {
- // Expected result.
- }
-
- try {
- ldr.getCachedBytes(Integer.MAX_VALUE);
- fail("Did not throw LargeObjectException");
- } catch (LargeObjectException tooBig) {
- // Expected result.
- }
- }
- }
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