/**
    * Copyright 2005-2015 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.uif.util;
  
  import static org.junit.Assert.assertEquals;
  
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.junit.Test;
  import org.kuali.rice.krad.uif.util.ObjectPathExpressionParser.PathEntry;
  
  public class ObjectPathExpressionParserTest extends ProcessLoggingUnitTest {
  
      @Retention(RetentionPolicy.RUNTIME)
      public @interface TestAnnotation {
          String afoo();
      }
  
      private static class DoIt implements PathEntry {
  
          @Override
          public String parse(String parentPath, Object node, String next) {
              if (next == null) {
                  return "";
              }
              String snode = (String) node;
              StringBuilder rv = new StringBuilder();
              if (snode != null && snode.length() > 0) {
                  rv.append(snode);
              }
  
              if (rv.length() > 0) {
                  rv.append('+');
              }
              
              rv.append(next);
  
              return rv.toString();
          }
      }
  
      @Test
      public void testParsePathExpression() {
          assertEquals("foo+bar",
                  ObjectPathExpressionParser.parsePathExpression(null, "foo.bar", new DoIt())
                          .toString());
          assertEquals("foo+bar",
                  ObjectPathExpressionParser.parsePathExpression(null, "foo[bar]", new DoIt())
                          .toString());
          assertEquals("foo+bar+baz",
                  ObjectPathExpressionParser
                          .parsePathExpression(null, "foo[bar].baz", new DoIt())
                          .toString());
          assertEquals(
                  "foo+bar[baz]",
                  ObjectPathExpressionParser.parsePathExpression(null, "foo[bar[baz]]",
                          new DoIt()).toString());
          assertEquals(
                  "foo+bar-bar.baz+fez",
                  ObjectPathExpressionParser.parsePathExpression(null, "foo[bar-bar.baz]+fez",
                          new DoIt()).toString());
      }
  
      private static class JoinIt implements PathEntry {
  
          @Override
          public List<String> parse(String parentPath, Object node, String next) {
              if (next == null) {
                  return new ArrayList<String>();
              }
  
              @SuppressWarnings("unchecked")
              List<String> rv = (List<String>) node;
              rv.add(next);
  
              return rv;
          }
      }
  
      @Test
      public void testJoinParsePathExpression() {
          @SuppressWarnings("unchecked")
          List<String> l1 = (List<String>) ObjectPathExpressionParser.parsePathExpression(null, "foo.bar", new JoinIt());
         assertEquals(2, l1.size());
         assertEquals("foo", l1.get(0));
         assertEquals("bar", l1.get(1));
         
         @SuppressWarnings("unchecked")
         List<String> l2 = (List<String>) ObjectPathExpressionParser.parsePathExpression(null, "foo[bar]", new JoinIt());
         assertEquals(2, l2.size());
         assertEquals("foo", l2.get(0));
         assertEquals("bar", l2.get(1));
         
         @SuppressWarnings("unchecked")
         List<String> l3 = (List<String>) ObjectPathExpressionParser.parsePathExpression(null, "foo[bar-bar.baz].fez", new JoinIt());
         assertEquals(3, l3.size());
         assertEquals("foo", l3.get(0));
         assertEquals("bar-bar.baz", l3.get(1));
         assertEquals("fez", l3.get(2));
     }
 
 }