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/*******************************************************************************
* Copyright (C) 2013, François Rey <eclipse.org_@_francois_._rey_._name>
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* François Rey - First implementation as part of handling linked resources
*******************************************************************************/
package org.eclipse.egit.core.test;
import static org.hamcrest.Matchers.hasItem;
import static org.junit.Assert.assertThat;
import java.util.Collection;
import java.util.HashSet;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.egit.core.internal.indexdiff.GitResourceDeltaVisitor;
import org.eclipse.egit.core.project.RepositoryMapping;
import org.eclipse.jgit.lib.Repository;
/**
* Helper class for test cases that need to know what workspace changes egit
* will detect. Changes to files within the git repository folder are ignored
* by default, however this behavior can be changed by a constructor parameter.
* Usage: create one instance per test case and call {@link #setUp()} and
* {@link #tearDown()} before and after the test case. Use other functions
* to test and assert what changed resources are expected.
* Implementation is mainly an {@link IResourceChangeListener} which calls
* a {@link GitResourceDeltaVisitor} for each change that occurs in a project
* that uses egit.
*/
public class GitResourceDeltaTestHelper {
private Repository repository;
private IResourceChangeListener resourceChangeListener;
private final Collection<IResource> changedResources;
private final boolean ignoreTeamPrivateMember;
public GitResourceDeltaTestHelper(Repository repository) {
this(repository, true);
}
public GitResourceDeltaTestHelper(Repository repository,
boolean ignoreTeamPrivateMember) {
this.repository = repository;
this.changedResources = new HashSet<IResource>();
this.ignoreTeamPrivateMember = ignoreTeamPrivateMember;
}
public void setUp() {
resourceChangeListener = new IResourceChangeListener() {
@Override
public void resourceChanged(final IResourceChangeEvent event) {
try {
event.getDelta().accept(new IResourceDeltaVisitor() {
@Override
public boolean visit(IResourceDelta delta)
throws CoreException {
final IResource resource = delta.getResource();
IProject project = resource.getProject();
if (project == null)
return true;
RepositoryMapping mapping = RepositoryMapping
.getMapping(resource);
if (mapping == null)
return true;
if (mapping.getRepository() != repository)
return false;
GitResourceDeltaVisitor visitor = new GitResourceDeltaVisitor(
repository);
try {
event.getDelta().accept(visitor);
} catch (CoreException e) {
String msg = "Exception during accept of GitResourceDeltaVisitor for resource delta";
throw new RuntimeException(msg, e);
}
IPath gitDirAbsolutePath = mapping
.getGitDirAbsolutePath();
for (IResource res : visitor.getResourcesToUpdate()) {
if (ignoreTeamPrivateMember
&& (res.isTeamPrivateMember() || gitDirAbsolutePath
.isPrefixOf(res
.getRawLocation()
.makeAbsolute())))
continue;
changedResources.add(res);
}
return false;
}
});
} catch (CoreException e) {
throw new RuntimeException(
"Exception during accept of test visitor for resource delta",
e);
}
}
};
ResourcesPlugin.getWorkspace().addResourceChangeListener(
resourceChangeListener, IResourceChangeEvent.POST_CHANGE);
}
public void tearDown() {
if (resourceChangeListener != null) {
ResourcesPlugin.getWorkspace().removeResourceChangeListener(
resourceChangeListener);
resourceChangeListener = null;
}
}
public Collection<IResource> getChangedResources() {
return changedResources;
}
public boolean noChangedResources() {
return changedResources.isEmpty();
}
public boolean anyChangedResources() {
return !changedResources.isEmpty();
}
public void assertChangedResources(String[] expected) {
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
for (String file : expected)
assertThat(changedResources, hasItem(root.findMember(file)));
}
}
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