package org.codehaus.plexus.interpolation;
   
   /*
    * Copyright 2001-2008 Codehaus Foundation.
    *
    * Licensed 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.
   */
  
  import java.util.Properties;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  public class PropertiesBasedValueSourceTest {
  
      @Test
      public void testPropertyShouldReturnValueFromProperties() {
          Properties props = new Properties();
  
          String key = "key";
          String value = "value";
  
          props.setProperty(key, value);
  
          PropertiesBasedValueSource vs = new PropertiesBasedValueSource(props);
  
          assertNotNull(vs.getValue(key));
      }
  
      @Test
      public void testPropertyShouldReturnNullWhenPropertyMissing() {
          Properties props = new Properties();
  
          String key = "key";
  
          PropertiesBasedValueSource vs = new PropertiesBasedValueSource(props);
  
          assertNull(vs.getValue(key));
      }
  }