package org.codehaus.plexus.interpolation;
   
   /*
    * Copyright 2007 The 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.ArrayList;
  import java.util.List;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  public class PrefixedObjectValueSourceTest {
  
      @Test
      public void testEmptyExpressionResultsInNullReturn_NoPrefixUsed() {
          String target = "Target object";
  
          List prefixes = new ArrayList();
          prefixes.add("target");
          prefixes.add("object");
  
          PrefixedObjectValueSource vs = new PrefixedObjectValueSource(prefixes, target, true);
          Object result = vs.getValue("");
  
          assertNull(result);
      }
  
      @Test
      public void testEmptyExpressionResultsInNullReturn_PrefixUsedWithDot() {
          String target = "Target object";
  
          List prefixes = new ArrayList();
          prefixes.add("target");
          prefixes.add("object");
  
          PrefixedObjectValueSource vs = new PrefixedObjectValueSource(prefixes, target, true);
          Object result = vs.getValue("target.");
  
          assertNull(result);
      }
  
      @Test
      public void testEmptyExpressionResultsInNullReturn_PrefixUsedWithoutDot() {
          String target = "Target object";
  
          List prefixes = new ArrayList();
          prefixes.add("target");
          prefixes.add("object");
  
          PrefixedObjectValueSource vs = new PrefixedObjectValueSource(prefixes, target, true);
          Object result = vs.getValue("target");
  
          assertNull(result);
      }
  }