DistributedCacheFileLocationTest.java

/**
 * 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.mahout.common;

import org.apache.hadoop.fs.Path;
import org.junit.Test;

import java.io.File;
import java.net.URI;


public class DistributedCacheFileLocationTest extends MahoutTestCase {

  static final File FILE_I_WANT_TO_FIND = new File("file/i_want_to_find.txt");
  static final URI[] DISTRIBUTED_CACHE_FILES = new URI[] {
      new File("/first/file").toURI(), new File("/second/file").toURI(), FILE_I_WANT_TO_FIND.toURI() };

  @Test
  public void nonExistingFile() {
    Path path = HadoopUtil.findInCacheByPartOfFilename("no such file", DISTRIBUTED_CACHE_FILES);
    assertNull(path);
  }

  @Test
  public void existingFile() {
    Path path = HadoopUtil.findInCacheByPartOfFilename("want_to_find", DISTRIBUTED_CACHE_FILES);
    assertNotNull(path);
    assertEquals(FILE_I_WANT_TO_FIND.getName(), path.getName());
  }

}