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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.
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  package org.eclipse.aether.internal.impl.synccontext.named;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.Collection;
  import java.util.Iterator;
  
  import org.eclipse.aether.artifact.DefaultArtifact;
  import org.eclipse.aether.metadata.DefaultMetadata;
  import org.eclipse.aether.metadata.Metadata;
  import org.eclipse.aether.named.NamedLockKey;
  import org.junit.jupiter.api.Test;
  
  import static java.util.Collections.emptyList;
  import static java.util.Collections.singletonList;
  import static org.junit.jupiter.api.Assertions.*;
  
  public class BasedirNameMapperTest extends NameMapperTestSupport {
      private final String PS = "/"; // we work with URIs now, not OS file paths
  
      BasedirNameMapper mapper = new BasedirNameMapper(new HashingNameMapper(GAVNameMapper.gav()));
  
      @Test
      void nullsAndEmptyInputs() {
          Collection<NamedLockKey> names;
  
          names = mapper.nameLocks(session, null, null);
          assertTrue(names.isEmpty());
  
          names = mapper.nameLocks(session, null, emptyList());
          assertTrue(names.isEmpty());
  
          names = mapper.nameLocks(session, emptyList(), null);
          assertTrue(names.isEmpty());
  
          names = mapper.nameLocks(session, emptyList(), emptyList());
          assertTrue(names.isEmpty());
      }
  
      @Test
      void defaultLocksDir() {
          configProperties.put("aether.syncContext.named.hashing.depth", "0");
          configProperties.put("aether.syncContext.named.basedir.locksDir", null);
          DefaultArtifact artifact = new DefaultArtifact("group:artifact:1.0");
          Collection<NamedLockKey> names = mapper.nameLocks(session, singletonList(artifact), null);
          assertEquals(names.size(), 1);
          assertEquals(
                  names.iterator().next().name(),
                  basedir.toUri() + PS + ".locks" + PS + "46e98183d232f1e16f863025080c7f2b9797fd10");
      }
  
      @Test
      void relativeLocksDir() {
          configProperties.put("aether.syncContext.named.hashing.depth", "0");
          configProperties.put("aether.syncContext.named.basedir.locksDir", "my/locks");
          DefaultArtifact artifact = new DefaultArtifact("group:artifact:1.0");
          Collection<NamedLockKey> names = mapper.nameLocks(session, singletonList(artifact), null);
          assertEquals(names.size(), 1);
          assertEquals(
                  names.iterator().next().name(),
                  basedir.toUri() + PS + "my" + PS + "locks" + PS + "46e98183d232f1e16f863025080c7f2b9797fd10");
      }
  
      @Test
      void absoluteLocksDir() throws IOException {
          String absoluteLocksDir = "/my/locks";
          String customBaseDir =
                  new File(absoluteLocksDir).getCanonicalFile().toPath().toUri().toASCIIString();
  
          configProperties.put("aether.syncContext.named.hashing.depth", "0");
          configProperties.put("aether.syncContext.named.basedir.locksDir", absoluteLocksDir);
          DefaultArtifact artifact = new DefaultArtifact("group:artifact:1.0");
          Collection<NamedLockKey> names = mapper.nameLocks(session, singletonList(artifact), null);
          assertEquals(names.size(), 1);
          assertEquals(names.iterator().next().name(), customBaseDir + PS + "46e98183d232f1e16f863025080c7f2b9797fd10");
      }
  
      @Test
      void singleArtifact() {
          configProperties.put("aether.syncContext.named.hashing.depth", "0");
  
         DefaultArtifact artifact = new DefaultArtifact("group:artifact:1.0");
         Collection<NamedLockKey> names = mapper.nameLocks(session, singletonList(artifact), null);
         assertEquals(names.size(), 1);
         assertEquals(
                 names.iterator().next().name(),
                 basedir.toUri() + PS + ".locks" + PS + "46e98183d232f1e16f863025080c7f2b9797fd10");
     }
 
     @Test
     void singleMetadata() {
         configProperties.put("aether.syncContext.named.hashing.depth", "0");
 
         DefaultMetadata metadata =
                 new DefaultMetadata("group", "artifact", "maven-metadata.xml", Metadata.Nature.RELEASE_OR_SNAPSHOT);
         Collection<NamedLockKey> names = mapper.nameLocks(session, null, singletonList(metadata));
         assertEquals(names.size(), 1);
         assertEquals(
                 names.iterator().next().name(),
                 basedir.toUri() + PS + ".locks" + PS + "293b3990971f4b4b02b220620d2538eaac5f221b");
     }
 
     @Test
     void oneAndOne() {
         configProperties.put("aether.syncContext.named.hashing.depth", "0");
 
         DefaultArtifact artifact = new DefaultArtifact("agroup:artifact:1.0");
         DefaultMetadata metadata =
                 new DefaultMetadata("bgroup", "artifact", "maven-metadata.xml", Metadata.Nature.RELEASE_OR_SNAPSHOT);
         Collection<NamedLockKey> names = mapper.nameLocks(session, singletonList(artifact), singletonList(metadata));
 
         assertEquals(names.size(), 2);
         Iterator<NamedLockKey> namesIterator = names.iterator();
 
         // they are sorted as well
         assertEquals(
                 namesIterator.next().name(),
                 basedir.toUri() + PS + ".locks" + PS + "d36504431d00d1c6e4d1c34258f2bf0a004de085");
         assertEquals(
                 namesIterator.next().name(),
                 basedir.toUri() + PS + ".locks" + PS + "fbcebba60d7eb931eca634f6ca494a8a1701b638");
     }
 }