/*
    * 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.file;
  
  import static org.apache.commons.io.file.CounterAssertions.assertCounts;
  
  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.function.Supplier;
  import java.util.stream.Stream;
  
  import org.apache.commons.io.filefilter.AndFileFilter;
  import org.apache.commons.io.filefilter.DirectoryFileFilter;
  import org.apache.commons.io.filefilter.EmptyFileFilter;
  import org.apache.commons.io.filefilter.PathVisitorFileFilter;
  import org.junit.jupiter.api.io.TempDir;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.Arguments;
  import org.junit.jupiter.params.provider.MethodSource;
  
  /**
   * Tests {@link PathUtils}.
   */
  public class PathUtilsVisitorTest {
  
      static Stream<Arguments> testParameters() {
          return AccumulatorPathVisitorTest.testParameters();
      }
  
      @TempDir
      File tempDirFile;
  
      /**
       * Tests an empty folder.
       */
      @ParameterizedTest
      @MethodSource("testParameters")
      public void testCountEmptyFolder(final Supplier<AccumulatorPathVisitor> supplier) throws IOException {
          final Path tempDir = tempDirFile.toPath();
          final CountingPathVisitor countingPathVisitor = CountingPathVisitor.withLongCounters();
          final PathVisitorFileFilter countingFileFilter = new PathVisitorFileFilter(countingPathVisitor);
          Files.walkFileTree(tempDir,
              new AndFileFilter(countingFileFilter, DirectoryFileFilter.INSTANCE, EmptyFileFilter.EMPTY));
          assertCounts(1, 0, 0, countingPathVisitor.getPathCounters());
      }
  
      /**
       * Tests a directory with one file of size 0.
       */
      @ParameterizedTest
      @MethodSource("testParameters")
      public void testCountFolders1FileSize0(final Supplier<AccumulatorPathVisitor> supplier) throws IOException {
          final CountingPathVisitor countingPathVisitor = CountingPathVisitor.withLongCounters();
          final PathVisitorFileFilter countingFileFilter = new PathVisitorFileFilter(countingPathVisitor);
          Files.walkFileTree(Paths.get("src/test/resources/org/apache/commons/io/dirs-1-file-size-0"),
              countingFileFilter);
          assertCounts(1, 1, 0, countingPathVisitor.getPathCounters());
      }
  
      /**
       * Tests a directory with one file of size 1.
       */
      @ParameterizedTest
      @MethodSource("testParameters")
      public void testCountFolders1FileSize1(final Supplier<AccumulatorPathVisitor> supplier) throws IOException {
          final CountingPathVisitor countingPathVisitor = CountingPathVisitor.withLongCounters();
          final PathVisitorFileFilter countingFileFilter = new PathVisitorFileFilter(countingPathVisitor);
          Files.walkFileTree(Paths.get("src/test/resources/org/apache/commons/io/dirs-1-file-size-1"),
              countingFileFilter);
          assertCounts(1, 1, 1, countingPathVisitor.getPathCounters());
      }
  
      /**
       * Tests a directory with two subdirectories, each containing one file of size 1.
       */
      @ParameterizedTest
      @MethodSource("testParameters")
      public void testCountFolders2FileSize2(final Supplier<AccumulatorPathVisitor> supplier) throws IOException {
          final CountingPathVisitor countingPathVisitor = CountingPathVisitor.withLongCounters();
          final PathVisitorFileFilter countingFileFilter = new PathVisitorFileFilter(countingPathVisitor);
          Files.walkFileTree(Paths.get("src/test/resources/org/apache/commons/io/dirs-2-file-size-2"),
             countingFileFilter);
         assertCounts(3, 2, 2, countingPathVisitor.getPathCounters());
     }
 }