package org.apache.maven.model.path;

/*
 * 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.
 */

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;

import org.junit.Test;

/**
 * @author Benjamin Bentmann
 */
public class DefaultUrlNormalizerTest
{

    private UrlNormalizer normalizer = new DefaultUrlNormalizer();

    private String normalize( String url )
    {
        return normalizer.normalize( url );
    }

    @Test
    public void testNullSafe()
    {
        assertNull( normalize( null ) );
    }

    @Test
    public void testTrailingSlash()
    {
        assertEquals( "", normalize( "" ) );
        assertEquals( "http://server.org/dir", normalize( "http://server.org/dir" ) );
        assertEquals( "http://server.org/dir/", normalize( "http://server.org/dir/" ) );
    }

    @Test
    public void testRemovalOfParentRefs()
    {
        assertEquals( "http://server.org/child", normalize( "http://server.org/parent/../child" ) );
        assertEquals( "http://server.org/child", normalize( "http://server.org/grand/parent/../../child" ) );

        assertEquals( "http://server.org//child", normalize( "http://server.org/parent/..//child" ) );
        assertEquals( "http://server.org/child", normalize( "http://server.org/parent//../child" ) );
    }

    @Test
    public void testPreservationOfDoubleSlashes()
    {
        assertEquals( "scm:hg:ssh://localhost//home/user", normalize( "scm:hg:ssh://localhost//home/user" ) );
        assertEquals( "file:////UNC/server", normalize( "file:////UNC/server" ) );
        assertEquals( "[fetch=]http://server.org/[push=]ssh://server.org/",
                      normalize( "[fetch=]http://server.org/[push=]ssh://server.org/" ) );
    }

    @Test
    public void absolutePathTraversalPastRootIsOmitted()
    {
        assertEquals( "/", normalize("/../" ) );
    }

    @Test
    public void parentDirectoryRemovedFromRelativeUriReference()
    {
        assertEquals( "", normalize( "a/../" ) );
    }

    @Test
    public void leadingParentDirectoryNotRemovedFromRelativeUriReference()
    {
        assertEquals( "../", normalize( "../" ) );
    }
}
