filefiltertestcase.java

java 的io 操作类 java 的io 操作类

/*
 * 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 java.io.File;
import java.io.FileFilter;
import java.io.FilenameFilter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;

import junit.framework.TestSuite;
import junit.textui.TestRunner;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOCase;
import org.apache.commons.io.testtools.FileBasedTestCase;

/**
 * Used to test FileFilterUtils.
 */
public class FileFilterTestCase extends FileBasedTestCase {

    /**
     * The subversion directory name.
     */
    static final String SVN_DIR_NAME = ".svn";
    
    private static final boolean WINDOWS = (File.separatorChar == '\\');

    public FileFilterTestCase(String name) {
        super(name);
    }

    public static void main(String[] args) {
        TestRunner.run(suite());
    }

    public static TestSuite suite() {
        return new TestSuite(FileFilterTestCase.class);
    }

    public void setUp() {
        getTestDirectory().mkdirs();
    }

    public void tearDown() throws Exception {
        FileUtils.deleteDirectory(getTestDirectory());
    }

    public void assertFiltering(IOFileFilter filter, File file, boolean expected) throws Exception {
        // Note. This only tests the (File, String) version if the parent of
        //       the File passed in is not null
        assertTrue(
            "Filter(File) " + filter.getClass().getName() + " not " + expected + " for " + file,
            (filter.accept(file) == expected));

        if (file != null && file.getParentFile() != null) {
            assertTrue(
                "Filter(File, String) " + filter.getClass().getName() + " not " + expected + " for " + file,
                (filter.accept(file.getParentFile(), file.getName()) == expected));
        } else if (file == null) {
            assertTrue(
                "Filter(File, String) " + filter.getClass().getName() + " not " + expected + " for null",
                filter.accept(file) == expected);
        }
    }

    public void testSuffix() throws Exception {
        IOFileFilter filter = new SuffixFileFilter(new String[] { "tes", "est" });
        File testFile = new File( "test" );
        File fredFile = new File( "fred" );
        assertFiltering(filter, new File("fred.tes"), true);
        assertFiltering(filter, new File("fred.est"), true);
        assertFiltering(filter, new File("fred.EST"), false); //case-sensitive
        assertFiltering(filter, new File("fred.exe"), false);

        filter = FileFilterUtils.orFileFilter( 
        			FileFilterUtils.suffixFileFilter( "tes" ),
        			FileFilterUtils.suffixFileFilter( "est" ) );
        assertFiltering(filter, new File("fred"), false);
        assertFiltering(filter, new File(".tes"), true);
        assertFiltering(filter, new File("fred.test"), true);

        filter = new SuffixFileFilter("est");
        assertFiltering(filter, new File("test"), true);
        assertFiltering(filter, new File("fred"), false);

        assertTrue( filter.accept( testFile.getParentFile(), testFile.getName() ) );
        assertTrue( !filter.accept( fredFile.getParentFile(), fredFile.getName() ) );

        List prefixes = Arrays.asList( new String[] { "ood", "red" } );
        IOFileFilter listFilter = new SuffixFileFilter( prefixes );

        assertTrue( !listFilter.accept( testFile.getParentFile(), testFile.getName() ) );
        assertTrue( listFilter.accept( fredFile.getParentFile(), fredFile.getName() ) );

        try {
            new SuffixFileFilter((String) null);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new SuffixFileFilter((String[]) null);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new SuffixFileFilter((List) null);
            fail();
        } catch (IllegalArgumentException ex) {
        }
}

    public void testSuffixCaseInsensitive() throws Exception {

        IOFileFilter filter = new SuffixFileFilter(new String[] { "tes", "est" }, IOCase.INSENSITIVE);
        assertFiltering(filter, new File("foo.tes"), true);
        assertFiltering(filter, new File("foo.est"), true);
        assertFiltering(filter, new File("foo.EST"), true); //case-sensitive
        assertFiltering(filter, new File("foo.TES"), true); //case-sensitive
        assertFiltering(filter, new File("foo.exe"), false);

        filter = new SuffixFileFilter("est", IOCase.INSENSITIVE);
        assertFiltering(filter, new File("test"), true);
        assertFiltering(filter, new File("TEST"), true);

        List suffixes = Arrays.asList( new String[] { "tes", "est" } );
        filter = new SuffixFileFilter(suffixes, IOCase.INSENSITIVE);
        assertFiltering(filter, new File("bar.tes"), true);
        assertFiltering(filter, new File("bar.est"), true);
        assertFiltering(filter, new File("bar.EST"), true); //case-sensitive
        assertFiltering(filter, new File("bar.TES"), true); //case-sensitive
        assertFiltering(filter, new File("bar.exe"), false);

        try {
            new SuffixFileFilter((String) null, IOCase.INSENSITIVE);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new SuffixFileFilter((String[]) null, IOCase.INSENSITIVE);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new SuffixFileFilter((List) null, IOCase.INSENSITIVE);
            fail();
        } catch (IllegalArgumentException ex) {
        }
    }

    public void testDirectory() throws Exception {
        // XXX: This test presumes the current working dir is the base dir of the source checkout.
        IOFileFilter filter = new DirectoryFileFilter();

        assertFiltering(filter, new File("src/"), true);
        assertFiltering(filter, new File("src/java/"), true);

        assertFiltering(filter, new File("project.xml"), false);

        assertFiltering(filter, new File("imaginary"), false);
        assertFiltering(filter, new File("imaginary/"), false);

        assertFiltering(filter, new File("LICENSE.txt"), false);
        
        assertSame(DirectoryFileFilter.DIRECTORY, DirectoryFileFilter.INSTANCE);
    }

    public void testFiles() throws Exception {
        // XXX: This test presumes the current working dir is the base dir of the source checkout.
        IOFileFilter filter = FileFileFilter.FILE;
        
        assertFiltering(filter, new File("src/"), false);
        assertFiltering(filter, new File("src/java/"), false);
        
        assertFiltering(filter, new File("project.xml"), true);
        
        assertFiltering(filter, new File("imaginary"), false);
        assertFiltering(filter, new File("imaginary/"), false);
        
        assertFiltering(filter, new File("LICENSE.txt"), true);
    }

    public void testPrefix() throws Exception {
        IOFileFilter filter = new PrefixFileFilter(new String[] { "foo", "bar" });
        File testFile = new File( "test" );
        File fredFile = new File( "fred" );

        assertFiltering(filter, new File("foo.test"), true);
        assertFiltering(filter, new File("FOO.test"), false);  //case-sensitive
        assertFiltering(filter, new File("foo"), true);
        assertFiltering(filter, new File("bar"), true);
        assertFiltering(filter, new File("food/"), true);

        filter = FileFilterUtils.prefixFileFilter( "bar" );
        assertFiltering(filter, new File("barred\\"), true);
        assertFiltering(filter, new File("test"), false);
        assertFiltering(filter, new File("fo_o.test"), false);
        assertFiltering(filter, new File("abar.exe"), false);

        filter = new PrefixFileFilter("tes");
        assertFiltering(filter, new File("test"), true);
        assertFiltering(filter, new File("fred"), false);

        assertTrue( filter.accept( testFile.getParentFile(), testFile.getName() ) );
        assertTrue( !filter.accept( fredFile.getParentFile(), fredFile.getName() ) );

        List prefixes = Arrays.asList( new String[] { "foo", "fre" } );
        IOFileFilter listFilter = new PrefixFileFilter( prefixes );

        assertTrue( !listFilter.accept( testFile.getParentFile(), testFile.getName() ) );
        assertTrue( listFilter.accept( fredFile.getParentFile(), fredFile.getName() ) );
        
        
        try {
            new PrefixFileFilter((String) null);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new PrefixFileFilter((String[]) null);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new PrefixFileFilter((List) null);
            fail();
        } catch (IllegalArgumentException ex) {
        }
    }

    public void testPrefixCaseInsensitive() throws Exception {

        IOFileFilter filter = new PrefixFileFilter(new String[] { "foo", "bar" }, IOCase.INSENSITIVE);
        assertFiltering(filter, new File("foo.test1"), true);
        assertFiltering(filter, new File("bar.test1"), true);
        assertFiltering(filter, new File("FOO.test1"), true);  //case-sensitive
        assertFiltering(filter, new File("BAR.test1"), true);  //case-sensitive

        filter = new PrefixFileFilter("bar", IOCase.INSENSITIVE);
        assertFiltering(filter, new File("foo.test2"), false);
        assertFiltering(filter, new File("bar.test2"), true);
        assertFiltering(filter, new File("FOO.test2"), false); //case-sensitive
        assertFiltering(filter, new File("BAR.test2"), true);  //case-sensitive

        List prefixes = Arrays.asList( new String[] { "foo", "bar" } );
        filter = new PrefixFileFilter(prefixes, IOCase.INSENSITIVE);
        assertFiltering(filter, new File("foo.test3"), true);
        assertFiltering(filter, new File("bar.test3"), true);
        assertFiltering(filter, new File("FOO.test3"), true);  //case-sensitive
        assertFiltering(filter, new File("BAR.test3"), true);  //case-sensitive

        try {
            new PrefixFileFilter((String) null, IOCase.INSENSITIVE);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new PrefixFileFilter((String[]) null, IOCase.INSENSITIVE);
            fail();
        } catch (IllegalArgumentException ex) {
        }

        try {
            new PrefixFileFilter((List) null, IOCase.INSENSITIVE);
            fail();
        } catch (IllegalArgumentException ex) {
        }
    }

    public void testNameFilter() throws Exception {
        IOFileFilter filter = new NameFileFilter(new String[] { "foo", "bar" });