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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* 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 org.apache.commons.io.filefilter;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.file.AccumulatorPathVisitor;
import org.apache.commons.io.file.CounterAssertions;
import org.apache.commons.io.file.Counters;
import org.junit.jupiter.api.Test;
/**
* Tests {@link DirectoryFileFilter}.
*/
public class DirectoryFileFilterTest {
/**
* Javadoc example.
*
* System.out calls are commented out here but not in the Javadoc.
*/
@Test
public void testJavadocExampleUsingIo() {
final File dir = FileUtils.current();
final String[] files = dir.list(DirectoryFileFilter.INSTANCE);
// End of Javadoc example
assertTrue(files.length > 0);
}
/**
* Javadoc example.
*
* System.out calls are commented out here but not in the Javadoc.
*/
@Test
public void testJavadocExampleUsingNio() throws IOException {
final Path dir = Paths.get("");
final AccumulatorPathVisitor visitor = AccumulatorPathVisitor.withLongCounters(DirectoryFileFilter.INSTANCE,
TrueFileFilter.INSTANCE);
//
// Walk one dir
Files.walkFileTree(dir, Collections.emptySet(), 1, visitor);
// System.out.println(visitor.getPathCounters());
// System.out.println(visitor.getFileList());
//
visitor.getPathCounters().reset();
//
// Walk dir tree
Files.walkFileTree(dir, visitor);
// System.out.println(visitor.getPathCounters());
// System.out.println(visitor.getDirList());
// System.out.println(visitor.getFileList());
//
// End of Javadoc example
assertEquals(0, visitor.getPathCounters().getFileCounter().get());
assertTrue(visitor.getPathCounters().getDirectoryCounter().get() > 0);
assertEquals(0, visitor.getPathCounters().getByteCounter().get());
// We counted and accumulated
assertFalse(visitor.getDirList().isEmpty());
assertFalse(visitor.getFileList().isEmpty());
//
assertNotEquals(Counters.noopPathCounters(), visitor.getPathCounters());
visitor.getPathCounters().reset();
CounterAssertions.assertZeroCounters(visitor.getPathCounters());
}
}
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