content: /*
   * 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.kafka.tools.consumer.group;
  
  import org.apache.kafka.tools.ToolsTestUtils;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.List;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class ConsumerGroupCommandTest {
      @Test
      public void testValidateRegexCommandWithValidRegex() {
          String output = ToolsTestUtils.grabConsoleOutput(
              () -> ConsumerGroupCommand.main(List.of(
                  "--validate-regex",
                  "foo.*"
              ).toArray(new String[0]))
          );
  
          assertEquals(
              "The regular expression `foo.*` is valid.\n",
              output
          );
      }
  
      @Test
      public void testValidateRegexCommandWithInvalidRegex() {
          String output = ToolsTestUtils.grabConsoleOutput(
              () -> ConsumerGroupCommand.main(List.of(
                  "--validate-regex",
                  "[foo.*"
              ).toArray(new String[0]))
          );
  
          assertEquals(
              "The regular expression `[foo.*` is invalid: missing closing ].\n",
              output
          );
      }
  }
  