/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.joran.spi;
  
  import java.util.ArrayList;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  public class CaseCombinatorTest {
  
      CaseCombinator p = new CaseCombinator();
  
      @Test
      public void smoke() {
          CaseCombinator p = new CaseCombinator();
  
          List<String> result = p.combinations("a-B=");
  
          List<String> witness = new ArrayList<String>();
          witness.add("a-b=");
          witness.add("A-b=");
          witness.add("a-B=");
          witness.add("A-B=");
          Assertions.assertEquals(witness, result);
      }
  
      @Test
      public void other() {
          List<String> result = p.combinations("aBCd");
          Assertions.assertEquals(16, result.size());
          Set<String> witness = new HashSet<String>(result);
          // check that there are no duplicates
          Assertions.assertEquals(16, witness.size());
      }
  }