/*
* Copyright (c) 2013, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.eclipse.org/legal/epl-v10.html
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.dart.tools.debug.core.util;
import junit.framework.TestCase;
public class HistoryListTest extends TestCase {
class MockListener implements HistoryListListener<String> {
public String changed;
public void clear() {
changed = null;
}
@Override
public void historyAboutToChange(String current) {
}
@Override
public void historyChanged(String current) {
changed = current;
}
}
protected HistoryList<String> historyList;
protected MockListener mockListener;
public void testAdd() {
historyList.add("foo");
assertEquals("foo", mockListener.changed);
assertFalse(historyList.hasNext());
assertFalse(historyList.hasPrevious());
}
public void testClear() {
historyList.add("foo");
historyList.clear();
assertEquals(null, mockListener.changed);
assertFalse(historyList.hasNext());
assertFalse(historyList.hasPrevious());
}
public void testHasNext() {
historyList.add("foo");
historyList.add("bar");
historyList.navigatePrevious();
assertEquals("foo", mockListener.changed);
assertTrue(historyList.hasNext());
assertFalse(historyList.hasPrevious());
}
public void testNavigateNext() {
historyList.add("foo");
historyList.add("bar");
historyList.navigatePrevious();
historyList.navigateNext();
assertEquals("bar", mockListener.changed);
assertFalse(historyList.hasNext());
assertTrue(historyList.hasPrevious());
}
public void testRemoveMatching() {
historyList.add("a");
historyList.add("1");
historyList.add("b");
historyList.add("1");
historyList.add("c");
historyList.navigatePrevious();
historyList.navigatePrevious();
assertEquals("b", historyList.getCurrent());
assertEquals(5, historyList.size());
historyList.removeMatching(new HistoryListMatcher<String>() {
@Override
public boolean matches(String t) {
return "1".equals(t);
}
});
assertEquals("b", historyList.getCurrent());
assertEquals(3, historyList.size());
assertTrue(historyList.hasNext());
historyList.removeMatching(new HistoryListMatcher<String>() {
@Override
public boolean matches(String t) {
return "b".equals(t);
}
});
assertEquals("c", historyList.getCurrent());
assertEquals(2, historyList.size());
assertFalse(historyList.hasNext());
}
@Override
protected void setUp() throws Exception {
mockListener = new MockListener();
historyList = new HistoryList<String>();
historyList.addListener(mockListener);
}
}