/*
    * 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
    *
   *   https://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;
  
  /**
   */
  class MapUtilTest {
  
      /**
       * Test copying of map
       */
      @Test
      void testCopyMap() throws Exception {
          final Map<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
      void testMergeMap() throws Exception {
          final Map<String, String> procEnvironment = EnvironmentUtils.getProcEnvironment();
          final Map<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
      void testPrefixMap() throws Exception {
          final Map<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"));
      }
  }