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/*******************************************************************************
 * Copyright (C) 2015, Max Hohenegger <eclipse@hohenegger.eu>
 *
 * 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.gitflow.op;

import static org.eclipse.jgit.lib.Constants.DEFAULT_REMOTE_NAME;
import static org.eclipse.jgit.lib.Constants.DOT_GIT;
import static org.eclipse.jgit.lib.Constants.HEAD;
import static org.eclipse.jgit.lib.Constants.R_HEADS;
import static org.junit.Assert.assertEquals;

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

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.egit.core.Activator;
import org.eclipse.egit.core.op.BranchOperation;
import org.eclipse.egit.core.op.CloneOperation;
import org.eclipse.egit.core.test.DualRepositoryTestCase;
import org.eclipse.egit.core.test.TestRepository;
import org.eclipse.egit.gitflow.GitFlowRepository;
import org.eclipse.jgit.errors.RevisionSyntaxException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.transport.URIish;
import org.junit.Before;

public class AbstractDualRepositoryTestCase extends DualRepositoryTestCase {
	protected static final String MY_FEATURE = "myFeature";

	protected static final String MY_MASTER = "master";

	protected static final String MY_RELEASE = "myRelease";

	protected static final String MY_VERSION_TAG = "v";

	protected static final String MY_HOTFIX = "myHotfix";

	private File workdir;

	private File workdir2;

	String projectName = "FeaturePublishTest";

	@Override
	@Before
	public void beforeTestCase() throws Exception {
		workdir = testUtils.createTempDir("Repository1");
		workdir2 = testUtils.createTempDir("Repository2");

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

		repository1.createInitialCommit("setUp");

		Repository repository = repository1.getRepository();
		new InitOperation(repository).execute(null);

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

		repository1.connect(project);
		repository1.trackAllFiles(project);
		repository1.commit("Initial commit");

		// let's get rid of the project
		project.delete(false, false, null);

		// let's clone repository1 to repository2
		URIish uri = repository1.getUri();
		CloneOperation clop = new CloneOperation(uri, true, null, workdir2,
				R_HEADS + MY_MASTER, DEFAULT_REMOTE_NAME, 0);
		clop.run(null);

		Repository repo2 = Activator.getDefault().getRepositoryCache()
				.lookupRepository(new File(workdir2, DOT_GIT));
		repository2 = new TestRepository(repo2);
		new InitOperation(repository).execute(null);
	}

	protected void assertCommitArrivedAtRemote(RevCommit branchCommit,
			Repository remote) throws CoreException {
		GitFlowRepository gfRepo = new GitFlowRepository(remote);
		BranchOperation checkoutOperation = new BranchOperation(remote,
				gfRepo.getConfig().getFullFeatureBranchName(MY_FEATURE));
		checkoutOperation.execute(null);
		RevCommit developHead = findHead(remote);
		assertEquals(branchCommit, developHead);
	}

	protected RevCommit findHead(Repository repo) {
		try (RevWalk walk = new RevWalk(repo)) {
			try {
				ObjectId head = repo.resolve(HEAD);
				return walk.parseCommit(head);
			} catch (RevisionSyntaxException | IOException e) {
				throw new RuntimeException(e);
			}
		}
	}

	protected String getRemoteName(GitFlowRepository gfRepo, String featureName) {
		return gfRepo.getConfig().getRemoteName(featureName);
	}
}

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