/*
    * 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.vfs2.provider.sftp;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import org.apache.commons.vfs2.FileSystemOptions;
  import org.junit.Before;
  import org.junit.Test;
  
  import com.jcraft.jsch.JSch;
  import com.jcraft.jsch.JSchException;
  import com.jcraft.jsch.Session;
  
  /**
   * Tests {@link SftpFileSystem}.
   */
  public class SftpFileSystemGroupsTests {
  
      private SftpFileSystem fileSystem;
      private final FileSystemOptions options = new FileSystemOptions();
      private Session session;
  
      @Before
      public void setup() throws JSchException {
          session = new JSch().getSession("");
          fileSystem = new SftpFileSystem(null, session, options);
      }
  
      @Test
      public void testShouldHandleEmptyGroupResult() {
          final StringBuilder builder = new StringBuilder("\n");
          final int[] groups = fileSystem.parseGroupIdOutput(builder);
  
          assertEquals(0, groups.length, "Group ids should be empty");
      }
  
      @Test
      public void testShouldHandleListOfGroupIds() {
          final StringBuilder builder = new StringBuilder("1 22 333 4444\n");
          final int[] groups = fileSystem.parseGroupIdOutput(builder);
  
          assertEquals(4, groups.length, "Group ids should not be empty");
          assertArrayEquals(new int[]{1, 22, 333, 4444}, groups);
      }
  
      @Test
      public void testShouldThrowOnUnexpectedOutput() {
          final StringBuilder builder = new StringBuilder("abc\n");
          assertThrows(NumberFormatException.class, () -> fileSystem.parseGroupIdOutput(builder));
      }
  
  }