org.eclipse.egit.ui.test.commit.DiffRegionFormatterTest.java Source code

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Here is the source code for org.eclipse.egit.ui.test.commit.DiffRegionFormatterTest.java

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/*******************************************************************************
 *  Copyright (c) 2011, 2013 GitHub Inc and others.
 *  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
 *
 *  Contributors:
 *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
 *******************************************************************************/
package org.eclipse.egit.ui.test.commit;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.io.File;

import org.eclipse.egit.core.Activator;
import org.eclipse.egit.ui.common.LocalRepositoryTestCase;
import org.eclipse.egit.ui.internal.commit.DiffRegionFormatter;
import org.eclipse.egit.ui.internal.commit.DiffRegionFormatter.DiffRegion;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.junit.Before;
import org.junit.Test;

/**
 * Unit tests for {@link DiffRegionFormatter}.
 */
public class DiffRegionFormatterTest extends LocalRepositoryTestCase {

    private Repository repository;

    private RevCommit commit;

    @Before
    public void setup() throws Exception {
        File repoFile = createProjectAndCommitToRepository();
        assertNotNull(repoFile);
        repository = Activator.getDefault().getRepositoryCache().lookupRepository(repoFile);
        assertNotNull(repository);

        try (RevWalk walk = new RevWalk(repository)) {
            commit = walk.parseCommit(repository.resolve(Constants.HEAD));
            assertNotNull(commit);
            walk.parseBody(commit.getParent(0));
        }
    }

    @Test
    public void testRanges() throws Exception {
        IDocument document = new Document();
        DiffRegionFormatter formatter = new DiffRegionFormatter(document);
        formatter.setRepository(repository);
        formatter.format(commit.getTree(), commit.getParent(0).getTree());
        assertTrue(document.getLength() > 0);
        DiffRegion[] regions = formatter.getRegions();
        assertNotNull(regions);
        assertTrue(regions.length > 0);
        for (DiffRegion region : regions) {
            assertNotNull(region);
            assertTrue(region.getOffset() >= 0);
            assertTrue(region.getLength() >= 0);
            assertTrue(region.getOffset() < document.getLength());
        }

    }

}