tests/org.eclipse.core.tests.resources/src/org/eclipse/core/tests/internal/resources/WorkspacePreferencesTest.java - platform/eclipse.platform.resources - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2017 IBM Corporation 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:
  *     IBM Corporation - initial API and implementation
  *     Alexander Kurtakov <akurtako@redhat.com> - Bug 459343
  *******************************************************************************/
 package org.eclipse.core.tests.internal.resources;

 import java.util.*;
 import junit.framework.*;
 import org.eclipse.core.internal.resources.*;
 import org.eclipse.core.resources.*;
 import org.eclipse.core.runtime.*;
 import org.eclipse.core.tests.resources.ResourceTest;

 public class WorkspacePreferencesTest extends ResourceTest {
 	private IWorkspace workspace;
 	private Preferences preferences;

 	/**
 	 * Constructor for WorkspacePreferencesTest.
 	 * @param name
 	 */
 	public WorkspacePreferencesTest(String name) {
 		super(name);
 	}

 	/**
 	 * @see TestCase#setUp()
 	 */
 	@Override
 	protected void setUp() throws Exception {
 		super.setUp();
 		workspace = ResourcesPlugin.getWorkspace();
 		preferences = ResourcesPlugin.getPlugin().getPluginPreferences();
 		workspace.setDescription(Workspace.defaultWorkspaceDescription());
 	}

 	/**
 	 * @see TestCase#tearDown()
 	 */
 	@Override
 	protected void tearDown() throws Exception {
 		super.tearDown();
 		workspace.setDescription(Workspace.defaultWorkspaceDescription());
 	}

 	/**
 	 * Tests properties state in a brand new workspace (must match defaults).
 	 */
 	public void testDefaults() {
 		IWorkspaceDescription description = Workspace.defaultWorkspaceDescription();

 		assertEquals("1.0", description, preferences);

 		// ensures that all properties in the default workspace description
 		// appear as non-default-default properties in the property store
 		// Don't include the default build order here as it is equivalent to the
 		// String default-default (ResourcesPlugin.PREF_BUILD_ORDER).
 		String[] descriptionProperties = {ResourcesPlugin.PREF_AUTO_BUILDING, ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER, ResourcesPlugin.PREF_FILE_STATE_LONGEVITY, ResourcesPlugin.PREF_MAX_BUILD_ITERATIONS, ResourcesPlugin.PREF_MAX_FILE_STATE_SIZE, ResourcesPlugin.PREF_MAX_FILE_STATES, ResourcesPlugin.PREF_SNAPSHOT_INTERVAL};
 		List<String> defaultPropertiesList = Arrays.asList(preferences.defaultPropertyNames());
 		for (String property : descriptionProperties) {
 			assertTrue("2.0 - Description property is not default: " + property, defaultPropertiesList.contains(property));
 		}
 	}

 	/**
 	 * Makes changes in the preferences and ensure they are reflected in the
 	 * workspace description.
 	 */
 	public void testSetPreferences() {
 		preferences.setValue(ResourcesPlugin.PREF_AUTO_BUILDING, true);
 		assertTrue("1.0", workspace.getDescription().isAutoBuilding());

 		preferences.setValue(ResourcesPlugin.PREF_AUTO_BUILDING, false);
 		assertTrue("1.1", !workspace.getDescription().isAutoBuilding());

 		preferences.setValue(ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER, true);
 		assertTrue("2.0", workspace.getDescription().getBuildOrder() == null);

 		preferences.setValue(ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER, false);
 		assertTrue("2.1", workspace.getDescription().getBuildOrder() != null);

 		preferences.setValue(ResourcesPlugin.PREF_BUILD_ORDER, "x/y,:z/z");
 		List<String> expectedList = Arrays.asList(new String[] {"x", "y,:z", "z"});
 		List<String> actualList = Arrays.asList(workspace.getDescription().getBuildOrder());
 		assertEquals("2.2", expectedList, actualList);

 		preferences.setValue(ResourcesPlugin.PREF_BUILD_ORDER, "");
 		assertTrue("2.3", workspace.getDescription().getBuildOrder().length == 0);

 		long snapshotInterval = 800000000L;
 		preferences.setValue(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL, snapshotInterval);
 		assertEquals("3.0", snapshotInterval, workspace.getDescription().getSnapshotInterval());

 		long defaultSnapshotInterval = preferences.getDefaultLong(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL);
 		preferences.setValue(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL, defaultSnapshotInterval);
 		assertEquals("3.1", defaultSnapshotInterval, workspace.getDescription().getSnapshotInterval());

 		preferences.setToDefault(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL);
 		assertEquals("3.2", defaultSnapshotInterval, workspace.getDescription().getSnapshotInterval());
 		assertEquals("Description not synchronized", workspace.getDescription(), preferences);

 	}

 	/**
 	 * Ensures property change events are properly fired when setting workspace description.
 	 */
 	public void testEvents() {
 		IWorkspaceDescription original = workspace.getDescription();

 		IWorkspaceDescription modified = workspace.getDescription();
 		// 1 - PREF_AUTO_BUILDING
 		modified.setAutoBuilding(!original.isAutoBuilding());
 		// 2 - PREF_DEFAULT_BUILD_ORDER and 3 - PREF_BUILD_ORDER
 		modified.setBuildOrder(new String[] {"a", "b", "c"});
 		// 3 - PREF_APPLY_FILE_STATE_POLICY
 		modified.setApplyFileStatePolicy(!original.isApplyFileStatePolicy());
 		// 4 - PREF_FILE_STATE_LONGEVITY
 		modified.setFileStateLongevity((original.getFileStateLongevity() + 1) * 2);
 		// 5 - PREF_MAX_BUILD_ITERATIONS
 		modified.setMaxBuildIterations((original.getMaxBuildIterations() + 1) * 2);
 		// 6 - PREF_MAX_FILE_STATES
 		modified.setMaxFileStates((original.getMaxFileStates() + 1) * 2);
 		// 7 - PREF_MAX_FILE_STATE_SIZE
 		modified.setMaxFileStateSize((original.getMaxFileStateSize() + 1) * 2);
 		// 8 - PREF_SNAPSHOT_INTERVAL
 		modified.setSnapshotInterval((original.getSnapshotInterval() + 1) * 2);

 		final List<String> changedProperties = new LinkedList<>();
 		Preferences.IPropertyChangeListener listener = event -> changedProperties.add(event.getProperty());
 		try {
 			preferences.addPropertyChangeListener(listener);
 			try {
 				workspace.setDescription(original);
 			} catch (CoreException e) {
 				fail("1.0", e);
 			}
 			// no events should have been fired
 			assertEquals("1.1 - wrong number of properties changed ", 0, changedProperties.size());
 			try {
 				workspace.setDescription(modified);
 			} catch (CoreException e) {
 				fail("2.0", e);
 			}
 			// the right number of events should have been fired
 			assertEquals("2.1 - wrong number of properties changed ", 9, changedProperties.size());
 		} finally {
 			preferences.removePropertyChangeListener(listener);
 		}
 	}

 	/**
 	 * Ensures preferences with both default/non-default values are properly exported/imported.
 	 */
 	public void testImportExport() {
 		IPath originalPreferencesFile = getRandomLocation().append("original.epf");
 		IPath modifiedPreferencesFile = getRandomLocation().append("modified.epf");
 		try {
 			// saves the current preferences (should be the default ones)
 			IWorkspaceDescription original = workspace.getDescription();

 			// sets a non-used preference to a non-default value so a
 			// preferences file can be generated
 			preferences.setValue("foo.bar", getRandomString());

 			// exports original preferences (only default values - except for bogus preference above)
 			try {
 				Preferences.exportPreferences(originalPreferencesFile);
 			} catch (CoreException e) {
 				fail("1.0", e);
 			}

 			// creates a modified description
 			IWorkspaceDescription modified = workspace.getDescription();
 			modified.setAutoBuilding(!original.isAutoBuilding());
 			modified.setBuildOrder(new String[] {"a", "b", "c"});
 			modified.setApplyFileStatePolicy(!original.isApplyFileStatePolicy());
 			modified.setFileStateLongevity((original.getFileStateLongevity() + 1) * 2);
 			modified.setMaxBuildIterations((original.getMaxBuildIterations() + 1) * 2);
 			modified.setMaxFileStates((original.getMaxFileStates() + 1) * 2);
 			modified.setMaxFileStateSize((original.getMaxFileStateSize() + 1) * 2);
 			modified.setSnapshotInterval((original.getSnapshotInterval() + 1) * 2);

 			// sets modified description
 			try {
 				workspace.setDescription(modified);
 			} catch (CoreException ce) {
 				fail("2.0", ce);
 			}
 			assertEquals("2.1", modified, workspace.getDescription());

 			// exports modified preferences
 			try {
 				Preferences.exportPreferences(modifiedPreferencesFile);
 			} catch (CoreException e) {
 				fail("3.0", e);
 			}

 			// imports original preferences
 			try {
 				Preferences.importPreferences(originalPreferencesFile);
 			} catch (CoreException e) {
 				fail("4.0", e);
 			}
 			// ensures preferences exported match the imported ones
 			assertEquals("4.1", original, workspace.getDescription());

 			// imports modified preferences
 			try {
 				Preferences.importPreferences(modifiedPreferencesFile);
 			} catch (CoreException e) {
 				fail("5.0", e);
 			}
 			// ensures preferences exported match the imported ones
 			assertEquals("5.1", modified, workspace.getDescription());
 		} finally {
 			ensureDoesNotExistInFileSystem(originalPreferencesFile.removeLastSegments(1).toFile());
 			ensureDoesNotExistInFileSystem(modifiedPreferencesFile.removeLastSegments(1).toFile());
 		}

 	}

 	/**
 	 * Makes changes through IWorkspace#setDescription and checks if the changes
 	 * are reflected in the preferences.
 	 */
 	public void testSetDescription() {
 		IWorkspaceDescription description = workspace.getDescription();
 		description.setAutoBuilding(false);
 		description.setBuildOrder(new String[] {"a", "b,c", "c"});
 		description.setFileStateLongevity(60000 * 5);
 		description.setMaxBuildIterations(35);
 		description.setMaxFileStates(16);
 		description.setMaxFileStateSize(100050);
 		description.setSnapshotInterval(1234567);
 		try {
 			workspace.setDescription(description);
 		} catch (CoreException ce) {
 			fail("2.0", ce);
 		}
 		assertEquals("2.1 - Preferences not synchronized", description, preferences);

 		// try to make changes without committing them

 		// sets current state to a known value
 		description.setFileStateLongevity(90000);
 		try {
 			workspace.setDescription(description);
 		} catch (CoreException ce) {
 			fail("3.0", ce);
 		}
 		// try to make a change
 		description.setFileStateLongevity(100000);
 		// the original value should remain set
 		assertEquals("3.1", 90000, workspace.getDescription().getFileStateLongevity());
 		assertEquals("3.2", 90000, preferences.getLong(ResourcesPlugin.PREF_FILE_STATE_LONGEVITY));
 	}

 	/**
 	 * Checks if a legacy workspace description is correctly loaded and
 	 * its file discarded.
 	 */
 	public void testMigration() {
 		WorkspaceDescription description = new WorkspaceDescription("Legacy workspace");
 		description.setAutoBuilding(false);
 		final String[] buildOrder = new String[] {"g", "r", "e", "p"};
 		description.setBuildOrder(buildOrder);
 		description.setFileStateLongevity(Math.abs((long) (Math.random() * 100000L)));
 		description.setMaxFileStates(Math.abs((int) (Math.random() * 100000L)));
 		description.setMaxFileStateSize(Math.abs((long) (Math.random() * 100000L)));
 		description.setSnapshotInterval(Math.abs((long) (Math.random() * 100000L)));
 		LocalMetaArea localMetaArea = ((Workspace) workspace).getMetaArea();
 		try {
 			localMetaArea.write(description);
 		} catch (CoreException ce) {
 			fail("1.0", ce);
 		}
 		assertTrue("2.0 - file .description does not exist", localMetaArea.getOldWorkspaceDescriptionLocation().toFile().isFile());
 		WorkspaceDescription descriptionFromDisk = localMetaArea.readOldWorkspace();
 		assertTrue("2.1 - file .description still exists", !localMetaArea.getOldWorkspaceDescriptionLocation().toFile().isFile());
 		assertEquals("3.0", description, descriptionFromDisk);
 	}

 	/**
 	 * Compares the values in a workspace description with the corresponding
 	 * properties in a preferences object.
 	 */
 	public void assertEquals(String message, IWorkspaceDescription description, Preferences preferences) throws ComparisonFailure {
 		assertEquals(message + " - 1", description.isAutoBuilding(), preferences.getBoolean(ResourcesPlugin.PREF_AUTO_BUILDING));
 		assertEquals(message + " - 2", description.getBuildOrder() == null, preferences.getBoolean(ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER));
 		assertEquals(message + " - 3", WorkspacePreferences.convertStringArraytoString(description.getBuildOrder()), preferences.getString(ResourcesPlugin.PREF_BUILD_ORDER));
 		assertEquals(message + " - 4", description.isApplyFileStatePolicy(), preferences.getBoolean(ResourcesPlugin.PREF_APPLY_FILE_STATE_POLICY));
 		assertEquals(message + " - 5", description.getFileStateLongevity(), preferences.getLong(ResourcesPlugin.PREF_FILE_STATE_LONGEVITY));
 		assertEquals(message + " - 6", description.getMaxFileStates(), preferences.getInt(ResourcesPlugin.PREF_MAX_FILE_STATES));
 		assertEquals(message + " - 7", description.getMaxFileStateSize(), preferences.getLong(ResourcesPlugin.PREF_MAX_FILE_STATE_SIZE));
 		assertEquals(message + " - 8", description.getSnapshotInterval(), preferences.getLong(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL));
 		assertEquals(message + " - 9", description.getMaxBuildIterations(), preferences.getLong(ResourcesPlugin.PREF_MAX_BUILD_ITERATIONS));
 	}

 	/**
 	 * Compares two workspace description objects..
 	 */
 	public void assertEquals(String message, IWorkspaceDescription description1, IWorkspaceDescription description2) throws ComparisonFailure {
 		assertEquals(message + " - 1", description1.isAutoBuilding(), description2.isAutoBuilding());
 		assertEquals(message + " - 2", description1.getBuildOrder(), description2.getBuildOrder());
 		assertEquals(message + " - 3", WorkspacePreferences.convertStringArraytoString(description1.getBuildOrder()), WorkspacePreferences.convertStringArraytoString(description2.getBuildOrder()));
 		assertEquals(message + " - 4", description1.isApplyFileStatePolicy(), description2.isApplyFileStatePolicy());
 		assertEquals(message + " - 5", description1.getFileStateLongevity(), description2.getFileStateLongevity());
 		assertEquals(message + " - 6", description1.getMaxFileStates(), description2.getMaxFileStates());
 		assertEquals(message + " - 7", description1.getMaxFileStateSize(), description2.getMaxFileStateSize());
 		assertEquals(message + " - 8", description1.getSnapshotInterval(), description2.getSnapshotInterval());
 		assertEquals(message + " - 9", description1.getMaxBuildIterations(), description2.getMaxBuildIterations());
 	}

 	public static Test suite() {
 		//		TestSuite suite = new TestSuite();
 		//		suite.addTest(new WorkspacePreferencesTest("testImportExport"));
 		//		return suite;
 		return new TestSuite(WorkspacePreferencesTest.class);

 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2017 IBM Corporation 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:
	* IBM Corporation - initial API and implementation
	* Alexander Kurtakov <akurtako@redhat.com> - Bug 459343
	*******************************************************************************/
	package org.eclipse.core.tests.internal.resources;

	import java.util.*;
	import junit.framework.*;
	import org.eclipse.core.internal.resources.*;
	import org.eclipse.core.resources.*;
	import org.eclipse.core.runtime.*;
	import org.eclipse.core.tests.resources.ResourceTest;

	public class WorkspacePreferencesTest extends ResourceTest {
	private IWorkspace workspace;
	private Preferences preferences;

	/**
	* Constructor for WorkspacePreferencesTest.
	* @param name
	*/
	public WorkspacePreferencesTest(String name) {
	super(name);
	}

	/**
	* @see TestCase#setUp()
	*/
	@Override
	protected void setUp() throws Exception {
	super.setUp();
	workspace = ResourcesPlugin.getWorkspace();
	preferences = ResourcesPlugin.getPlugin().getPluginPreferences();
	workspace.setDescription(Workspace.defaultWorkspaceDescription());
	}

	/**
	* @see TestCase#tearDown()
	*/
	@Override
	protected void tearDown() throws Exception {
	super.tearDown();
	workspace.setDescription(Workspace.defaultWorkspaceDescription());
	}

	/**
	* Tests properties state in a brand new workspace (must match defaults).
	*/
	public void testDefaults() {
	IWorkspaceDescription description = Workspace.defaultWorkspaceDescription();

	assertEquals("1.0", description, preferences);

	// ensures that all properties in the default workspace description
	// appear as non-default-default properties in the property store
	// Don't include the default build order here as it is equivalent to the
	// String default-default (ResourcesPlugin.PREF_BUILD_ORDER).
	String[] descriptionProperties = {ResourcesPlugin.PREF_AUTO_BUILDING, ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER, ResourcesPlugin.PREF_FILE_STATE_LONGEVITY, ResourcesPlugin.PREF_MAX_BUILD_ITERATIONS, ResourcesPlugin.PREF_MAX_FILE_STATE_SIZE, ResourcesPlugin.PREF_MAX_FILE_STATES, ResourcesPlugin.PREF_SNAPSHOT_INTERVAL};
	List<String> defaultPropertiesList = Arrays.asList(preferences.defaultPropertyNames());
	for (String property : descriptionProperties) {
	assertTrue("2.0 - Description property is not default: " + property, defaultPropertiesList.contains(property));
	}
	}

	/**
	* Makes changes in the preferences and ensure they are reflected in the
	* workspace description.
	*/
	public void testSetPreferences() {
	preferences.setValue(ResourcesPlugin.PREF_AUTO_BUILDING, true);
	assertTrue("1.0", workspace.getDescription().isAutoBuilding());

	preferences.setValue(ResourcesPlugin.PREF_AUTO_BUILDING, false);
	assertTrue("1.1", !workspace.getDescription().isAutoBuilding());

	preferences.setValue(ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER, true);
	assertTrue("2.0", workspace.getDescription().getBuildOrder() == null);

	preferences.setValue(ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER, false);
	assertTrue("2.1", workspace.getDescription().getBuildOrder() != null);

	preferences.setValue(ResourcesPlugin.PREF_BUILD_ORDER, "x/y,:z/z");
	List<String> expectedList = Arrays.asList(new String[] {"x", "y,:z", "z"});
	List<String> actualList = Arrays.asList(workspace.getDescription().getBuildOrder());
	assertEquals("2.2", expectedList, actualList);

	preferences.setValue(ResourcesPlugin.PREF_BUILD_ORDER, "");
	assertTrue("2.3", workspace.getDescription().getBuildOrder().length == 0);

	long snapshotInterval = 800000000L;
	preferences.setValue(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL, snapshotInterval);
	assertEquals("3.0", snapshotInterval, workspace.getDescription().getSnapshotInterval());

	long defaultSnapshotInterval = preferences.getDefaultLong(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL);
	preferences.setValue(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL, defaultSnapshotInterval);
	assertEquals("3.1", defaultSnapshotInterval, workspace.getDescription().getSnapshotInterval());

	preferences.setToDefault(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL);
	assertEquals("3.2", defaultSnapshotInterval, workspace.getDescription().getSnapshotInterval());
	assertEquals("Description not synchronized", workspace.getDescription(), preferences);

	}

	/**
	* Ensures property change events are properly fired when setting workspace description.
	*/
	public void testEvents() {
	IWorkspaceDescription original = workspace.getDescription();

	IWorkspaceDescription modified = workspace.getDescription();
	// 1 - PREF_AUTO_BUILDING
	modified.setAutoBuilding(!original.isAutoBuilding());
	// 2 - PREF_DEFAULT_BUILD_ORDER and 3 - PREF_BUILD_ORDER
	modified.setBuildOrder(new String[] {"a", "b", "c"});
	// 3 - PREF_APPLY_FILE_STATE_POLICY
	modified.setApplyFileStatePolicy(!original.isApplyFileStatePolicy());
	// 4 - PREF_FILE_STATE_LONGEVITY
	modified.setFileStateLongevity((original.getFileStateLongevity() + 1) * 2);
	// 5 - PREF_MAX_BUILD_ITERATIONS
	modified.setMaxBuildIterations((original.getMaxBuildIterations() + 1) * 2);
	// 6 - PREF_MAX_FILE_STATES
	modified.setMaxFileStates((original.getMaxFileStates() + 1) * 2);
	// 7 - PREF_MAX_FILE_STATE_SIZE
	modified.setMaxFileStateSize((original.getMaxFileStateSize() + 1) * 2);
	// 8 - PREF_SNAPSHOT_INTERVAL
	modified.setSnapshotInterval((original.getSnapshotInterval() + 1) * 2);

	final List<String> changedProperties = new LinkedList<>();
	Preferences.IPropertyChangeListener listener = event -> changedProperties.add(event.getProperty());
	try {
	preferences.addPropertyChangeListener(listener);
	try {
	workspace.setDescription(original);
	} catch (CoreException e) {
	fail("1.0", e);
	}
	// no events should have been fired
	assertEquals("1.1 - wrong number of properties changed ", 0, changedProperties.size());
	try {
	workspace.setDescription(modified);
	} catch (CoreException e) {
	fail("2.0", e);
	}
	// the right number of events should have been fired
	assertEquals("2.1 - wrong number of properties changed ", 9, changedProperties.size());
	} finally {
	preferences.removePropertyChangeListener(listener);
	}
	}

	/**
	* Ensures preferences with both default/non-default values are properly exported/imported.
	*/
	public void testImportExport() {
	IPath originalPreferencesFile = getRandomLocation().append("original.epf");
	IPath modifiedPreferencesFile = getRandomLocation().append("modified.epf");
	try {
	// saves the current preferences (should be the default ones)
	IWorkspaceDescription original = workspace.getDescription();

	// sets a non-used preference to a non-default value so a
	// preferences file can be generated
	preferences.setValue("foo.bar", getRandomString());

	// exports original preferences (only default values - except for bogus preference above)
	try {
	Preferences.exportPreferences(originalPreferencesFile);
	} catch (CoreException e) {
	fail("1.0", e);
	}

	// creates a modified description
	IWorkspaceDescription modified = workspace.getDescription();
	modified.setAutoBuilding(!original.isAutoBuilding());
	modified.setBuildOrder(new String[] {"a", "b", "c"});
	modified.setApplyFileStatePolicy(!original.isApplyFileStatePolicy());
	modified.setFileStateLongevity((original.getFileStateLongevity() + 1) * 2);
	modified.setMaxBuildIterations((original.getMaxBuildIterations() + 1) * 2);
	modified.setMaxFileStates((original.getMaxFileStates() + 1) * 2);
	modified.setMaxFileStateSize((original.getMaxFileStateSize() + 1) * 2);
	modified.setSnapshotInterval((original.getSnapshotInterval() + 1) * 2);

	// sets modified description
	try {
	workspace.setDescription(modified);
	} catch (CoreException ce) {
	fail("2.0", ce);
	}
	assertEquals("2.1", modified, workspace.getDescription());

	// exports modified preferences
	try {
	Preferences.exportPreferences(modifiedPreferencesFile);
	} catch (CoreException e) {
	fail("3.0", e);
	}

	// imports original preferences
	try {
	Preferences.importPreferences(originalPreferencesFile);
	} catch (CoreException e) {
	fail("4.0", e);
	}
	// ensures preferences exported match the imported ones
	assertEquals("4.1", original, workspace.getDescription());

	// imports modified preferences
	try {
	Preferences.importPreferences(modifiedPreferencesFile);
	} catch (CoreException e) {
	fail("5.0", e);
	}
	// ensures preferences exported match the imported ones
	assertEquals("5.1", modified, workspace.getDescription());
	} finally {
	ensureDoesNotExistInFileSystem(originalPreferencesFile.removeLastSegments(1).toFile());
	ensureDoesNotExistInFileSystem(modifiedPreferencesFile.removeLastSegments(1).toFile());
	}

	}

	/**
	* Makes changes through IWorkspace#setDescription and checks if the changes
	* are reflected in the preferences.
	*/
	public void testSetDescription() {
	IWorkspaceDescription description = workspace.getDescription();
	description.setAutoBuilding(false);
	description.setBuildOrder(new String[] {"a", "b,c", "c"});
	description.setFileStateLongevity(60000 * 5);
	description.setMaxBuildIterations(35);
	description.setMaxFileStates(16);
	description.setMaxFileStateSize(100050);
	description.setSnapshotInterval(1234567);
	try {
	workspace.setDescription(description);
	} catch (CoreException ce) {
	fail("2.0", ce);
	}
	assertEquals("2.1 - Preferences not synchronized", description, preferences);

	// try to make changes without committing them

	// sets current state to a known value
	description.setFileStateLongevity(90000);
	try {
	workspace.setDescription(description);
	} catch (CoreException ce) {
	fail("3.0", ce);
	}
	// try to make a change
	description.setFileStateLongevity(100000);
	// the original value should remain set
	assertEquals("3.1", 90000, workspace.getDescription().getFileStateLongevity());
	assertEquals("3.2", 90000, preferences.getLong(ResourcesPlugin.PREF_FILE_STATE_LONGEVITY));
	}

	/**
	* Checks if a legacy workspace description is correctly loaded and
	* its file discarded.
	*/
	public void testMigration() {
	WorkspaceDescription description = new WorkspaceDescription("Legacy workspace");
	description.setAutoBuilding(false);
	final String[] buildOrder = new String[] {"g", "r", "e", "p"};
	description.setBuildOrder(buildOrder);
	description.setFileStateLongevity(Math.abs((long) (Math.random() * 100000L)));
	description.setMaxFileStates(Math.abs((int) (Math.random() * 100000L)));
	description.setMaxFileStateSize(Math.abs((long) (Math.random() * 100000L)));
	description.setSnapshotInterval(Math.abs((long) (Math.random() * 100000L)));
	LocalMetaArea localMetaArea = ((Workspace) workspace).getMetaArea();
	try {
	localMetaArea.write(description);
	} catch (CoreException ce) {
	fail("1.0", ce);
	}
	assertTrue("2.0 - file .description does not exist", localMetaArea.getOldWorkspaceDescriptionLocation().toFile().isFile());
	WorkspaceDescription descriptionFromDisk = localMetaArea.readOldWorkspace();
	assertTrue("2.1 - file .description still exists", !localMetaArea.getOldWorkspaceDescriptionLocation().toFile().isFile());
	assertEquals("3.0", description, descriptionFromDisk);
	}

	/**
	* Compares the values in a workspace description with the corresponding
	* properties in a preferences object.
	*/
	public void assertEquals(String message, IWorkspaceDescription description, Preferences preferences) throws ComparisonFailure {
	assertEquals(message + " - 1", description.isAutoBuilding(), preferences.getBoolean(ResourcesPlugin.PREF_AUTO_BUILDING));
	assertEquals(message + " - 2", description.getBuildOrder() == null, preferences.getBoolean(ResourcesPlugin.PREF_DEFAULT_BUILD_ORDER));
	assertEquals(message + " - 3", WorkspacePreferences.convertStringArraytoString(description.getBuildOrder()), preferences.getString(ResourcesPlugin.PREF_BUILD_ORDER));
	assertEquals(message + " - 4", description.isApplyFileStatePolicy(), preferences.getBoolean(ResourcesPlugin.PREF_APPLY_FILE_STATE_POLICY));
	assertEquals(message + " - 5", description.getFileStateLongevity(), preferences.getLong(ResourcesPlugin.PREF_FILE_STATE_LONGEVITY));
	assertEquals(message + " - 6", description.getMaxFileStates(), preferences.getInt(ResourcesPlugin.PREF_MAX_FILE_STATES));
	assertEquals(message + " - 7", description.getMaxFileStateSize(), preferences.getLong(ResourcesPlugin.PREF_MAX_FILE_STATE_SIZE));
	assertEquals(message + " - 8", description.getSnapshotInterval(), preferences.getLong(ResourcesPlugin.PREF_SNAPSHOT_INTERVAL));
	assertEquals(message + " - 9", description.getMaxBuildIterations(), preferences.getLong(ResourcesPlugin.PREF_MAX_BUILD_ITERATIONS));
	}

	/**
	* Compares two workspace description objects..
	*/
	public void assertEquals(String message, IWorkspaceDescription description1, IWorkspaceDescription description2) throws ComparisonFailure {
	assertEquals(message + " - 1", description1.isAutoBuilding(), description2.isAutoBuilding());
	assertEquals(message + " - 2", description1.getBuildOrder(), description2.getBuildOrder());
	assertEquals(message + " - 3", WorkspacePreferences.convertStringArraytoString(description1.getBuildOrder()), WorkspacePreferences.convertStringArraytoString(description2.getBuildOrder()));
	assertEquals(message + " - 4", description1.isApplyFileStatePolicy(), description2.isApplyFileStatePolicy());
	assertEquals(message + " - 5", description1.getFileStateLongevity(), description2.getFileStateLongevity());
	assertEquals(message + " - 6", description1.getMaxFileStates(), description2.getMaxFileStates());
	assertEquals(message + " - 7", description1.getMaxFileStateSize(), description2.getMaxFileStateSize());
	assertEquals(message + " - 8", description1.getSnapshotInterval(), description2.getSnapshotInterval());
	assertEquals(message + " - 9", description1.getMaxBuildIterations(), description2.getMaxBuildIterations());
	}

	public static Test suite() {
	// TestSuite suite = new TestSuite();
	// suite.addTest(new WorkspacePreferencesTest("testImportExport"));
	// return suite;
	return new TestSuite(WorkspacePreferencesTest.class);

	}
	}