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.common.security.kerberos;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class KerberosRuleTest {
  
      @Test
      public void testReplaceParameters() throws BadFormatString {
          // positive test cases
          assertEquals(KerberosRule.replaceParameters("", new String[0]), "");
          assertEquals(KerberosRule.replaceParameters("hello", new String[0]), "hello");
          assertEquals(KerberosRule.replaceParameters("", new String[]{"too", "many", "parameters", "are", "ok"}), "");
          assertEquals(KerberosRule.replaceParameters("hello", new String[]{"too", "many", "parameters", "are", "ok"}), "hello");
          assertEquals(KerberosRule.replaceParameters("hello $0", new String[]{"too", "many", "parameters", "are", "ok"}), "hello too");
          assertEquals(KerberosRule.replaceParameters("hello $0", new String[]{"no recursion $1"}), "hello no recursion $1");
  
          // negative test cases
          assertThrows(
              BadFormatString.class,
              () -> KerberosRule.replaceParameters("$0", new String[]{}),
              "An out-of-bounds parameter number should trigger an exception!");
  
          assertThrows(
              BadFormatString.class,
              () -> KerberosRule.replaceParameters("hello $a", new String[]{"does not matter"}),
              "A malformed parameter name should trigger an exception!");
      }
  
  }
  