| /* |
| * Copyright (C) 2010, Google Inc. and others |
| * |
| * 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. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| 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. |
| } |
| } |
| } |