/*
    * 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.exec.util;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.commons.exec.environment.EnvironmentUtils;
  import org.junit.jupiter.api.Test;
  
  /**
   */
  public class MapUtilTest {
      /**
       * Test copying of map
       */
      @Test
      public void testCopyMap() throws Exception {
  
          final HashMap<String, String> procEnvironment = new HashMap<>();
          procEnvironment.put("JAVA_HOME", "/usr/opt/java");
  
          final Map<String, String> result = MapUtils.copy(procEnvironment);
          assertEquals(1, result.size());
          assertEquals(1, procEnvironment.size());
          assertEquals("/usr/opt/java", result.get("JAVA_HOME"));
  
          result.remove("JAVA_HOME");
          assertTrue(result.isEmpty());
          assertEquals(1, procEnvironment.size());
      }
  
      /**
       * Test merging of maps
       */
      @Test
      public void testMergeMap() throws Exception {
  
          final Map<String, String> procEnvironment = EnvironmentUtils.getProcEnvironment();
          final HashMap<String, String> applicationEnvironment = new HashMap<>();
  
          applicationEnvironment.put("appMainClass", "foo.bar.Main");
          final Map<String, String> result = MapUtils.merge(procEnvironment, applicationEnvironment);
          assertEquals(procEnvironment.size() + applicationEnvironment.size(), result.size());
          assertEquals("foo.bar.Main", result.get("appMainClass"));
      }
  
      /**
       * Test prefixing of map
       */
      @Test
      public void testPrefixMap() throws Exception {
  
          final HashMap<String, String> procEnvironment = new HashMap<>();
          procEnvironment.put("JAVA_HOME", "/usr/opt/java");
  
          final Map<String, String> result = MapUtils.prefix(procEnvironment, "env");
          assertEquals(procEnvironment.size(), result.size());
          assertEquals("/usr/opt/java", result.get("env.JAVA_HOME"));
      }
  }