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/*******************************************************************************
* Copyright (c) 2005, 2012 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:
* Anton Leherbauer - initial API and implementation
*******************************************************************************/
package org.eclipse.text.tests;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.eclipse.jface.text.CopyOnWriteTextStore;
import org.eclipse.jface.text.GapTextStore;
import org.eclipse.jface.text.ITextStore;
/**
* Test suite for the CopyOnWriteTextStore.
*
* @since 3.2
*/
public class CopyOnWriteTextStoreTest extends TestCase {
private static class COWTextStore extends CopyOnWriteTextStore {
COWTextStore() {
super(new GapTextStore());
}
ITextStore getStore() {
return fTextStore;
}
String get() {
return get(0, getLength());
}
}
private static final String INITIAL_CONTENT= "xxxxx";
private COWTextStore fText;
public CopyOnWriteTextStoreTest(String name) {
super(name);
}
protected void setUp() {
fText= new COWTextStore();
fText.set(INITIAL_CONTENT);
}
public static Test suite() {
return new TestSuite(CopyOnWriteTextStoreTest.class);
}
protected void tearDown () {
fText= null;
}
public void testInitialContent() {
assertEquals(INITIAL_CONTENT, fText.get());
// check that underlying text store is not modifiable
boolean failed= false;
try {
fText.getStore().replace(0,0,null);
} catch (UnsupportedOperationException uoe) {
failed= true;
}
assertTrue(failed);
}
public void testFirstModification() {
checkReplace(1, 1, "y");
assertEquals(GapTextStore.class, fText.getStore().getClass());
}
public void testSet() {
fText.replace(1, 1, "y");
fText.set(INITIAL_CONTENT);
assertEquals(INITIAL_CONTENT, fText.get());
// check that underlying text store is not modifiable
boolean failed= false;
try {
fText.getStore().replace(0,0,null);
} catch (UnsupportedOperationException uoe) {
failed= true;
}
assertTrue(failed);
}
public void testInsert1() {
for (int i= 1; i < 5; i++) {
checkReplace(2 * i - 1, 0, "y");
}
}
public void testInsert2() {
for (int i= 1; i < 5; i++) {
checkReplace(2 * (i - 1), 0, "y");
}
}
public void testDelete1() {
for (int i= 1; i < 5; i++) {
checkReplace(0, 1, "");
}
}
public void testDelete2() {
for (int i= 1; i < 5; i++) {
checkReplace(fText.getLength()-1, 1, "");
}
}
public void testAppend() {
for (int i= 1; i < 5; i++) {
checkReplace(fText.getLength(), 0, "y");
}
}
private void checkReplace(int offset, int length, String text) {
StringBuffer buf= new StringBuffer(fText.get());
buf.replace(offset, offset + length, text);
fText.replace(offset, length, text);
assertEquals(buf.toString(), fText.get());
}
}
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