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    * and other copyright owners as documented in the project's IP log.
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  package org.eclipse.jgit.submodule;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.Map;
  import java.util.Map.Entry;
  
  import org.eclipse.jgit.api.Git;
  import org.eclipse.jgit.api.SubmoduleStatusCommand;
  import org.eclipse.jgit.api.errors.GitAPIException;
  import org.eclipse.jgit.dircache.DirCache;
  import org.eclipse.jgit.dircache.DirCacheEditor;
  import org.eclipse.jgit.dircache.DirCacheEditor.PathEdit;
  import org.eclipse.jgit.dircache.DirCacheEntry;
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.eclipse.jgit.junit.TestRepository;
  import org.eclipse.jgit.lib.ConfigConstants;
  import org.eclipse.jgit.lib.Constants;
  import org.eclipse.jgit.lib.FileMode;
  import org.eclipse.jgit.lib.ObjectId;
  import org.eclipse.jgit.lib.Repository;
  import org.eclipse.jgit.lib.StoredConfig;
  import org.eclipse.jgit.storage.file.FileBasedConfig;
  import org.junit.Test;
  
  /**
   * Unit tests of {@link SubmoduleStatusCommand}
   */
  public class SubmoduleStatusTest extends RepositoryTestCase {
  
  	@Test
  	public void repositoryWithNoSubmodules() throws GitAPIException {
  		SubmoduleStatusCommand command = new SubmoduleStatusCommand(db);
  		Map<String, SubmoduleStatus> statuses = command.call();
  		assertNotNull(statuses);
  		assertTrue(statuses.isEmpty());
  	}
  
  	@Test
  	public void repositoryWithMissingSubmodule() throws IOException,
  			GitAPIException {
  		final ObjectId id = ObjectId
  				.fromString("abcd1234abcd1234abcd1234abcd1234abcd1234");
  		final String path = "sub";
  		DirCache cache = db.lockDirCache();
  		DirCacheEditor editor = cache.editor();
  		editor.add(new PathEdit(path) {
  
  			@Override
  			public void apply(DirCacheEntry ent) {
  				ent.setFileMode(FileMode.GITLINK);
  				ent.setObjectId(id);
  			}
 		});
 		editor.commit();
 
 		SubmoduleStatusCommand command = new SubmoduleStatusCommand(db);
 		Map<String, SubmoduleStatus> statuses = command.call();
 		assertNotNull(statuses);
 		assertEquals(1, statuses.size());
 		Entry<String, SubmoduleStatus> module = statuses.entrySet().iterator()
 				.next();
 		assertNotNull(module);
 		assertEquals(path, module.getKey());
 		SubmoduleStatus status = module.getValue();
 		assertNotNull(status);
 		assertEquals(path, status.getPath());
 		assertEquals(id, status.getIndexId());
 		assertEquals(SubmoduleStatusType.MISSING, status.getType());
 	}
 
 	@Test
 	public void repositoryWithUninitializedSubmodule() throws IOException,
 			GitAPIException {
 		final ObjectId id = ObjectId
 				.fromString("abcd1234abcd1234abcd1234abcd1234abcd1234");
 		final String path = "sub";
 		DirCache cache = db.lockDirCache();
 		DirCacheEditor editor = cache.editor();
 		editor.add(new PathEdit(path) {
 
 			@Override
 			public void apply(DirCacheEntry ent) {
 				ent.setFileMode(FileMode.GITLINK);
 				ent.setObjectId(id);
 			}
 		});
 		editor.commit();
 
 		FileBasedConfig modulesConfig = new FileBasedConfig(new File(
 				db.getWorkTree(), Constants.DOT_GIT_MODULES), db.getFS());
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_PATH, path);
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, "git://server/repo.git");
 		modulesConfig.save();
 
 		SubmoduleStatusCommand command = new SubmoduleStatusCommand(db);
 		Map<String, SubmoduleStatus> statuses = command.call();
 		assertNotNull(statuses);
 		assertEquals(1, statuses.size());
 		Entry<String, SubmoduleStatus> module = statuses.entrySet().iterator()
 				.next();
 		assertNotNull(module);
 		assertEquals(path, module.getKey());
 		SubmoduleStatus status = module.getValue();
 		assertNotNull(status);
 		assertEquals(path, status.getPath());
 		assertEquals(id, status.getIndexId());
 		assertEquals(SubmoduleStatusType.UNINITIALIZED, status.getType());
 	}
 
 	@Test
 	public void repositoryWithNoHeadInSubmodule() throws IOException,
 			GitAPIException {
 		final ObjectId id = ObjectId
 				.fromString("abcd1234abcd1234abcd1234abcd1234abcd1234");
 		final String path = "sub";
 		DirCache cache = db.lockDirCache();
 		DirCacheEditor editor = cache.editor();
 		editor.add(new PathEdit(path) {
 
 			@Override
 			public void apply(DirCacheEntry ent) {
 				ent.setFileMode(FileMode.GITLINK);
 				ent.setObjectId(id);
 			}
 		});
 		editor.commit();
 
 		String url = "git://server/repo.git";
 		StoredConfig config = db.getConfig();
 		config.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		config.save();
 
 		FileBasedConfig modulesConfig = new FileBasedConfig(new File(
 				db.getWorkTree(), Constants.DOT_GIT_MODULES), db.getFS());
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_PATH, path);
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		modulesConfig.save();
 
 		Repository subRepo = Git.init().setBare(false)
 				.setDirectory(new File(db.getWorkTree(), path)).call()
 				.getRepository();
 		assertNotNull(subRepo);
 
 		SubmoduleStatusCommand command = new SubmoduleStatusCommand(db);
 		Map<String, SubmoduleStatus> statuses = command.call();
 		assertNotNull(statuses);
 		assertEquals(1, statuses.size());
 		Entry<String, SubmoduleStatus> module = statuses.entrySet().iterator()
 				.next();
 		assertNotNull(module);
 		assertEquals(path, module.getKey());
 		SubmoduleStatus status = module.getValue();
 		assertNotNull(status);
 		assertEquals(path, status.getPath());
 		assertEquals(id, status.getIndexId());
 		assertEquals(SubmoduleStatusType.UNINITIALIZED, status.getType());
 	}
 
 	@Test
 	public void repositoryWithNoSubmoduleRepository() throws IOException,
 			GitAPIException {
 		final ObjectId id = ObjectId
 				.fromString("abcd1234abcd1234abcd1234abcd1234abcd1234");
 		final String path = "sub";
 		DirCache cache = db.lockDirCache();
 		DirCacheEditor editor = cache.editor();
 		editor.add(new PathEdit(path) {
 
 			@Override
 			public void apply(DirCacheEntry ent) {
 				ent.setFileMode(FileMode.GITLINK);
 				ent.setObjectId(id);
 			}
 		});
 		editor.commit();
 
 		String url = "git://server/repo.git";
 		StoredConfig config = db.getConfig();
 		config.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		config.save();
 
 		FileBasedConfig modulesConfig = new FileBasedConfig(new File(
 				db.getWorkTree(), Constants.DOT_GIT_MODULES), db.getFS());
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_PATH, path);
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		modulesConfig.save();
 
 		SubmoduleStatusCommand command = new SubmoduleStatusCommand(db);
 		Map<String, SubmoduleStatus> statuses = command.call();
 		assertNotNull(statuses);
 		assertEquals(1, statuses.size());
 		Entry<String, SubmoduleStatus> module = statuses.entrySet().iterator()
 				.next();
 		assertNotNull(module);
 		assertEquals(path, module.getKey());
 		SubmoduleStatus status = module.getValue();
 		assertNotNull(status);
 		assertEquals(path, status.getPath());
 		assertEquals(id, status.getIndexId());
 		assertEquals(SubmoduleStatusType.UNINITIALIZED, status.getType());
 	}
 
 	@Test
 	public void repositoryWithInitializedSubmodule() throws Exception {
 		String path = "sub";
 		Repository subRepo = Git.init().setBare(false)
 				.setDirectory(new File(db.getWorkTree(), path)).call()
 				.getRepository();
 		assertNotNull(subRepo);
 
 		TestRepository<?> subTr = new TestRepository<>(subRepo);
 		ObjectId id = subTr.branch(Constants.HEAD).commit().create().copy();
 
 		DirCache cache = db.lockDirCache();
 		DirCacheEditor editor = cache.editor();
 		editor.add(new PathEdit(path) {
 
 			@Override
 			public void apply(DirCacheEntry ent) {
 				ent.setFileMode(FileMode.GITLINK);
 				ent.setObjectId(id);
 			}
 		});
 		editor.commit();
 
 		String url = "git://server/repo.git";
 		StoredConfig config = db.getConfig();
 		config.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		config.save();
 
 		FileBasedConfig modulesConfig = new FileBasedConfig(new File(
 				db.getWorkTree(), Constants.DOT_GIT_MODULES), db.getFS());
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_PATH, path);
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		modulesConfig.save();
 
 		SubmoduleStatusCommand command = new SubmoduleStatusCommand(db);
 		Map<String, SubmoduleStatus> statuses = command.call();
 		assertNotNull(statuses);
 		assertEquals(1, statuses.size());
 		Entry<String, SubmoduleStatus> module = statuses.entrySet().iterator()
 				.next();
 		assertNotNull(module);
 		assertEquals(path, module.getKey());
 		SubmoduleStatus status = module.getValue();
 		assertNotNull(status);
 		assertEquals(path, status.getPath());
 		assertEquals(id, status.getIndexId());
 		assertEquals(SubmoduleStatusType.INITIALIZED, status.getType());
 	}
 
 	@Test
 	public void repositoryWithDifferentRevCheckedOutSubmodule() throws Exception {
 		String path = "sub";
 		Repository subRepo = Git.init().setBare(false)
 				.setDirectory(new File(db.getWorkTree(), path)).call()
 				.getRepository();
 		assertNotNull(subRepo);
 
 		TestRepository<?> subTr = new TestRepository<>(subRepo);
 		ObjectId id = subTr.branch(Constants.HEAD).commit().create().copy();
 
 		DirCache cache = db.lockDirCache();
 		DirCacheEditor editor = cache.editor();
 		editor.add(new PathEdit(path) {
 
 			@Override
 			public void apply(DirCacheEntry ent) {
 				ent.setFileMode(FileMode.GITLINK);
 				ent.setObjectId(id);
 			}
 		});
 		editor.commit();
 
 		String url = "git://server/repo.git";
 		StoredConfig config = db.getConfig();
 		config.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		config.save();
 
 		FileBasedConfig modulesConfig = new FileBasedConfig(new File(
 				db.getWorkTree(), Constants.DOT_GIT_MODULES), db.getFS());
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_PATH, path);
 		modulesConfig.setString(ConfigConstants.CONFIG_SUBMODULE_SECTION, path,
 				ConfigConstants.CONFIG_KEY_URL, url);
 		modulesConfig.save();
 
 		ObjectId newId = subTr.branch(Constants.HEAD).commit().create().copy();
 
 		SubmoduleStatusCommand command = new SubmoduleStatusCommand(db);
 		Map<String, SubmoduleStatus> statuses = command.call();
 		assertNotNull(statuses);
 		assertEquals(1, statuses.size());
 		Entry<String, SubmoduleStatus> module = statuses.entrySet().iterator()
 				.next();
 		assertNotNull(module);
 		assertEquals(path, module.getKey());
 		SubmoduleStatus status = module.getValue();
 		assertNotNull(status);
 		assertEquals(path, status.getPath());
 		assertEquals(id, status.getIndexId());
 		assertEquals(newId, status.getHeadId());
 		assertEquals(SubmoduleStatusType.REV_CHECKED_OUT, status.getType());
 	}
 }