org.eclipse.egit.core.test.op.DiscardChangesOperationTest.java Source code

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Here is the source code for org.eclipse.egit.core.test.op.DiscardChangesOperationTest.java

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/*******************************************************************************
 * Copyright (C) 2010, Mathias Kinzler <mathias.kinzler@sap.com>
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package org.eclipse.egit.core.test.op;

import static org.junit.Assert.assertEquals;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;

import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.egit.core.Activator;
import org.eclipse.egit.core.op.DiscardChangesOperation;
import org.eclipse.egit.core.test.DualRepositoryTestCase;
import org.eclipse.egit.core.test.TestRepository;
import org.eclipse.jgit.lib.Constants;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class DiscardChangesOperationTest extends DualRepositoryTestCase {

    File workdir;

    IProject project;

    String projectName = "DiscardChangesTest";

    @Before
    public void setUp() throws Exception {

        workdir = testUtils.createTempDir("Repository1");

        repository1 = new TestRepository(new File(workdir, Constants.DOT_GIT));

        // now we create a project in repo1
        project = testUtils.createProjectInLocalFileSystem(workdir, projectName);
        testUtils.addFileToProject(project, "folder1/file1.txt", "Hello world");

        repository1.connect(project);

        project.accept(new IResourceVisitor() {

            public boolean visit(IResource resource) throws CoreException {
                if (resource instanceof IFile) {
                    try {
                        repository1.track(EFS.getStore(resource.getLocationURI()).toLocalFile(0, null));
                    } catch (IOException e) {
                        throw new CoreException(Activator.error(e.getMessage(), e));
                    }
                }
                return true;
            }
        });
        repository1.commit("Initial commit");
    }

    @After
    public void tearDown() throws Exception {
        project.close(null);
        project.delete(false, false, null);
        repository1.dispose();
        repository1 = null;
        testUtils.deleteTempDirs();
    }

    @Test
    public void testDiscardChanges() throws Exception {
        IFile file = project.getFile(new Path("folder1/file1.txt"));
        String contents = testUtils.slurpAndClose(file.getContents());
        assertEquals("Hello world", contents);

        file.setContents(new ByteArrayInputStream("Changed".getBytes(project.getDefaultCharset())), 0, null);

        contents = testUtils.slurpAndClose(file.getContents());
        assertEquals("Changed", contents);

        DiscardChangesOperation dcop = new DiscardChangesOperation(new IResource[] { file });
        dcop.execute(new NullProgressMonitor());

        contents = testUtils.slurpAndClose(file.getContents());
        assertEquals("Hello world", contents);

    }
}