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/*******************************************************************************
* Copyright (c) 2009, 2010 Oracle. 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:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.common.utility.tests.internal.iterables;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import junit.framework.TestCase;
import org.eclipse.jpt.common.utility.Filter;
import org.eclipse.jpt.common.utility.internal.iterables.FilteringIterable;
@SuppressWarnings("nls")
public class FilteringIterableTests extends TestCase {
private static final String PREFIX = "prefix";
public FilteringIterableTests(String name) {
super(name);
}
public void testAccept() {
int i = 0;
for (String s : this.buildIterable()) {
assertTrue(s.contains(PREFIX));
i++;
}
assertEquals(6, i);
}
public void testFilter() {
Filter<String> filter = this.buildFilter();
int i = 0;
for (String s : new FilteringIterable<String>(this.buildNestedIterable(), filter)) {
assertTrue(s.contains(PREFIX));
i++;
}
assertEquals(6, i);
}
public void testToString() {
assertNotNull(this.buildIterable().toString());
}
public void testMissingFilter() {
boolean exCaught = false;
Iterable<String> iterable = new FilteringIterable<String>(this.buildNestedIterable());
try {
Iterator<String> iterator = iterable.iterator();
fail("bogus iterator: " + iterator);
} catch (RuntimeException ex) {
exCaught = true;
}
assertTrue(exCaught);
}
private Iterable<String> buildIterable() {
return this.buildFilteringIterable(this.buildNestedIterable());
}
private Iterable<String> buildFilteringIterable(Iterable<String> nestedIterable) {
return new FilteringIterable<String>(nestedIterable) {
@Override
protected boolean accept(String s) {
return s.startsWith(PREFIX);
}
};
}
private Filter<String> buildFilter() {
return new Filter<String>() {
public boolean accept(String s) {
return s.startsWith(PREFIX);
}
};
}
private Iterable<String> buildNestedIterable() {
Collection<String> c = new ArrayList<String>();
c.add(PREFIX + "1");
c.add(PREFIX + "2");
c.add(PREFIX + "3");
c.add("4");
c.add(PREFIX + "5");
c.add(PREFIX + "6");
c.add(PREFIX + "7");
c.add("8");
return c;
}
}
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