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- /*
- * Copyright (C) 2016, 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.internal.storage.reftree;
-
- import static org.eclipse.jgit.lib.Constants.HEAD;
- import static org.eclipse.jgit.lib.Constants.R_HEADS;
- import static org.eclipse.jgit.lib.Constants.R_TAGS;
- import static org.eclipse.jgit.lib.Ref.Storage.LOOSE;
- import static org.eclipse.jgit.lib.Ref.Storage.NEW;
- import static org.eclipse.jgit.transport.ReceiveCommand.Result.LOCK_FAILURE;
- import static org.eclipse.jgit.transport.ReceiveCommand.Result.NOT_ATTEMPTED;
- import static org.eclipse.jgit.transport.ReceiveCommand.Result.REJECTED_OTHER_REASON;
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertNotNull;
- import static org.junit.Assert.assertNull;
- import static org.junit.Assert.assertSame;
- import static org.junit.Assert.assertTrue;
-
- import java.io.IOException;
- import java.util.Arrays;
- import java.util.Collections;
-
- import org.eclipse.jgit.errors.MissingObjectException;
- import org.eclipse.jgit.internal.JGitText;
- import org.eclipse.jgit.internal.storage.dfs.DfsRepositoryDescription;
- import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
- import org.eclipse.jgit.junit.TestRepository;
- import org.eclipse.jgit.lib.ObjectId;
- import org.eclipse.jgit.lib.ObjectIdRef;
- import org.eclipse.jgit.lib.ObjectInserter;
- import org.eclipse.jgit.lib.ObjectReader;
- import org.eclipse.jgit.lib.Ref;
- import org.eclipse.jgit.lib.SymbolicRef;
- import org.eclipse.jgit.revwalk.RevBlob;
- import org.eclipse.jgit.revwalk.RevTag;
- import org.eclipse.jgit.revwalk.RevWalk;
- import org.eclipse.jgit.transport.ReceiveCommand;
- import org.junit.Before;
- import org.junit.Test;
-
- public class RefTreeTest {
- private static final String R_MASTER = R_HEADS + "master";
- private InMemoryRepository repo;
- private TestRepository<InMemoryRepository> git;
-
- @Before
- public void setUp() throws IOException {
- repo = new InMemoryRepository(new DfsRepositoryDescription("RefTree"));
- git = new TestRepository<>(repo);
- }
-
- @Test
- public void testEmptyTree() throws IOException {
- RefTree tree = RefTree.newEmptyTree();
- try (ObjectReader reader = repo.newObjectReader()) {
- assertNull(HEAD, tree.exactRef(reader, HEAD));
- assertNull("master", tree.exactRef(reader, R_MASTER));
- }
- }
-
- @Test
- public void testApplyThenReadMaster() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob id = git.blob("A");
- Command cmd = new Command(null, ref(R_MASTER, id));
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- assertSame(NOT_ATTEMPTED, cmd.getResult());
-
- try (ObjectReader reader = repo.newObjectReader()) {
- Ref m = tree.exactRef(reader, R_MASTER);
- assertNotNull(R_MASTER, m);
- assertEquals(R_MASTER, m.getName());
- assertEquals(id, m.getObjectId());
- assertTrue("peeled", m.isPeeled());
- }
- }
-
- @Test
- public void testUpdateMaster() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob id1 = git.blob("A");
- Command cmd1 = new Command(null, ref(R_MASTER, id1));
- assertTrue(tree.apply(Collections.singletonList(cmd1)));
- assertSame(NOT_ATTEMPTED, cmd1.getResult());
-
- RevBlob id2 = git.blob("B");
- Command cmd2 = new Command(ref(R_MASTER, id1), ref(R_MASTER, id2));
- assertTrue(tree.apply(Collections.singletonList(cmd2)));
- assertSame(NOT_ATTEMPTED, cmd2.getResult());
-
- try (ObjectReader reader = repo.newObjectReader()) {
- Ref m = tree.exactRef(reader, R_MASTER);
- assertNotNull(R_MASTER, m);
- assertEquals(R_MASTER, m.getName());
- assertEquals(id2, m.getObjectId());
- assertTrue("peeled", m.isPeeled());
- }
- }
-
- @Test
- public void testHeadSymref() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob id = git.blob("A");
- Command cmd1 = new Command(null, ref(R_MASTER, id));
- Command cmd2 = new Command(null, symref(HEAD, R_MASTER));
- assertTrue(tree.apply(Arrays.asList(new Command[] { cmd1, cmd2 })));
- assertSame(NOT_ATTEMPTED, cmd1.getResult());
- assertSame(NOT_ATTEMPTED, cmd2.getResult());
-
- try (ObjectReader reader = repo.newObjectReader()) {
- Ref m = tree.exactRef(reader, HEAD);
- assertNotNull(HEAD, m);
- assertEquals(HEAD, m.getName());
- assertTrue("symbolic", m.isSymbolic());
- assertNotNull(m.getTarget());
- assertEquals(R_MASTER, m.getTarget().getName());
- assertEquals(id, m.getTarget().getObjectId());
- }
-
- // Writing flushes some buffers, re-read from blob.
- ObjectId newId = write(tree);
- try (ObjectReader reader = repo.newObjectReader();
- RevWalk rw = new RevWalk(reader)) {
- tree = RefTree.read(reader, rw.parseTree(newId));
- Ref m = tree.exactRef(reader, HEAD);
- assertEquals(R_MASTER, m.getTarget().getName());
- }
- }
-
- @Test
- public void testTagIsPeeled() throws Exception {
- String name = "v1.0";
- RefTree tree = RefTree.newEmptyTree();
- RevBlob id = git.blob("A");
- RevTag tag = git.tag(name, id);
-
- String ref = R_TAGS + name;
- Command cmd = create(ref, tag);
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- assertSame(NOT_ATTEMPTED, cmd.getResult());
-
- try (ObjectReader reader = repo.newObjectReader()) {
- Ref m = tree.exactRef(reader, ref);
- assertNotNull(ref, m);
- assertEquals(ref, m.getName());
- assertEquals(tag, m.getObjectId());
- assertTrue("peeled", m.isPeeled());
- assertEquals(id, m.getPeeledObjectId());
- }
- }
-
- @Test
- public void testApplyAlreadyExists() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob a = git.blob("A");
- Command cmd = new Command(null, ref(R_MASTER, a));
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- ObjectId treeId = write(tree);
-
- RevBlob b = git.blob("B");
- Command cmd1 = create(R_MASTER, b);
- Command cmd2 = create(R_MASTER, b);
- assertFalse(tree.apply(Arrays.asList(new Command[] { cmd1, cmd2 })));
- assertSame(LOCK_FAILURE, cmd1.getResult());
- assertSame(REJECTED_OTHER_REASON, cmd2.getResult());
- assertEquals(JGitText.get().transactionAborted, cmd2.getMessage());
- assertEquals(treeId, write(tree));
- }
-
- @Test
- public void testApplyWrongOldId() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob a = git.blob("A");
- Command cmd = new Command(null, ref(R_MASTER, a));
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- ObjectId treeId = write(tree);
-
- RevBlob b = git.blob("B");
- RevBlob c = git.blob("C");
- Command cmd1 = update(R_MASTER, b, c);
- Command cmd2 = create(R_MASTER, b);
- assertFalse(tree.apply(Arrays.asList(new Command[] { cmd1, cmd2 })));
- assertSame(LOCK_FAILURE, cmd1.getResult());
- assertSame(REJECTED_OTHER_REASON, cmd2.getResult());
- assertEquals(JGitText.get().transactionAborted, cmd2.getMessage());
- assertEquals(treeId, write(tree));
- }
-
- @Test
- public void testApplyWrongOldIdButAlreadyCurrentIsNoOp() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob a = git.blob("A");
- Command cmd = new Command(null, ref(R_MASTER, a));
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- ObjectId treeId = write(tree);
-
- RevBlob b = git.blob("B");
- cmd = update(R_MASTER, b, a);
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- assertEquals(treeId, write(tree));
- }
-
- @Test
- public void testApplyCannotCreateSubdirectory() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob a = git.blob("A");
- Command cmd = new Command(null, ref(R_MASTER, a));
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- ObjectId treeId = write(tree);
-
- RevBlob b = git.blob("B");
- Command cmd1 = create(R_MASTER + "/fail", b);
- assertFalse(tree.apply(Collections.singletonList(cmd1)));
- assertSame(LOCK_FAILURE, cmd1.getResult());
- assertEquals(treeId, write(tree));
- }
-
- @Test
- public void testApplyCannotCreateParentRef() throws Exception {
- RefTree tree = RefTree.newEmptyTree();
- RevBlob a = git.blob("A");
- Command cmd = new Command(null, ref(R_MASTER, a));
- assertTrue(tree.apply(Collections.singletonList(cmd)));
- ObjectId treeId = write(tree);
-
- RevBlob b = git.blob("B");
- Command cmd1 = create("refs/heads", b);
- assertFalse(tree.apply(Collections.singletonList(cmd1)));
- assertSame(LOCK_FAILURE, cmd1.getResult());
- assertEquals(treeId, write(tree));
- }
-
- private static Ref ref(String name, ObjectId id) {
- return new ObjectIdRef.PeeledNonTag(LOOSE, name, id);
- }
-
- private static Ref symref(String name, String dest) {
- Ref d = new ObjectIdRef.PeeledNonTag(NEW, dest, null);
- return new SymbolicRef(name, d);
- }
-
- private Command create(String name, ObjectId id)
- throws MissingObjectException, IOException {
- return update(name, ObjectId.zeroId(), id);
- }
-
- private Command update(String name, ObjectId oldId, ObjectId newId)
- throws MissingObjectException, IOException {
- try (RevWalk rw = new RevWalk(repo)) {
- return new Command(rw, new ReceiveCommand(oldId, newId, name));
- }
- }
-
- private ObjectId write(RefTree tree) throws IOException {
- try (ObjectInserter ins = repo.newObjectInserter()) {
- ObjectId id = tree.writeTree(ins);
- ins.flush();
- return id;
- }
- }
- }
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