/*
    * 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.shiro.guice.web;
  
  import com.google.inject.Key;
  import org.apache.shiro.web.filter.mgt.DefaultFilter;
  import org.junit.Test;
  
  import javax.servlet.Filter;
  import java.lang.reflect.Field;
  import java.lang.reflect.Modifier;
  import java.util.EnumSet;
  
  import static org.junit.Assert.fail;
  
  public class DefaultFiltersTest {
      @Test
      public void checkDefaultFilters() throws Exception {
          EnumSet<DefaultFilter> defaultFilters = EnumSet.allOf(DefaultFilter.class);
          for(Field field: ShiroWebModule.class.getFields()) {
              if(Modifier.isStatic(field.getModifiers()) && Key.class.isAssignableFrom(field.getType())) {
                  Class<? extends Filter> filterType = ((Key)field.get(null)).getTypeLiteral().getRawType();
                  boolean found = false;
                  for(DefaultFilter filter: defaultFilters) {
                      if(filterType.equals(filter.getFilterClass())) {
                          found = true;
                          defaultFilters.remove(filter);
                          break;
                      }
                  }
                  if(!found) {
                      fail("Guice ShiroWebModule containts a default filter that Shiro proper does not. (" + filterType.getName() + ")");
                  }
              }
          }
          if(!defaultFilters.isEmpty()) {
              fail("Guice ShiroWebModule is missing one or more filters. " + defaultFilters);
          }
      }
  
  }