/*
    * 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.commons.scxml2.env;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  
  public class SimpleContextTest {
  
      private SimpleContext context;
  
      @Before
      public void setUp() throws Exception {
          context = new SimpleContext();
      }
      
      @Test
      public void testHasTrue() {
          Map<String, Object> vars = new HashMap<String, Object>();
          vars.put("key", "value");
          
          context.setVars(vars);
          
          Assert.assertTrue(context.has("key"));
      }
  
      @Test
      public void testHasNullParent() {
          Map<String, Object> vars = new HashMap<String, Object>();
          vars.put("key", "value");
          
          context.setVars(vars);
          
          Assert.assertFalse(context.has("differentKey"));
      }
      
      @Test
      public void testHasParentWrongKey() {
          Map<String, Object> parentVars = new HashMap<String, Object>();
          parentVars.put("key", "value");
          
          SimpleContext parentContext = new SimpleContext(null, parentVars);
          
          Map<String, Object> vars = new HashMap<String, Object>();
          vars.put("key", "value");
          
          context.setVars(vars);
          context = new SimpleContext(parentContext, parentVars);
          
          Assert.assertFalse(context.has("differentKey"));
      }
  
      @Test
      public void testHasParentCorrectKey() {
          Map<String, Object> parentVars = new HashMap<String, Object>();
          parentVars.put("differentKey", "value");
          
          SimpleContext parentContext = new SimpleContext(null, parentVars);
          
          Map<String, Object> vars = new HashMap<String, Object>();
          vars.put("key", "value");
          
          context.setVars(vars);
          context = new SimpleContext(parentContext, parentVars);
          
          Assert.assertTrue(context.has("differentKey"));
      }
      
      @Test
      public void testGetNull() {
          Object value = context.get("key");
          
          Assert.assertNull(value);
      }
      
      @Test
      public void testGetValue() {
          Map<String, Object> vars = new HashMap<String, Object>();
          vars.put("key", "value");
          
          context.setVars(vars);
         
         Assert.assertEquals("value", context.get("key"));
     }
     
     @Test
     public void testGetParentValue() {
         Map<String, Object> parentVars = new HashMap<String, Object>();
         parentVars.put("differentKey", "differentValue");
         
         SimpleContext parentContext = new SimpleContext(null, parentVars);
         
         Map<String, Object> vars = new HashMap<String, Object>();
         vars.put("key", "value");
         
         context.setVars(vars);
         context = new SimpleContext(parentContext, parentVars);
         
         Assert.assertEquals("differentValue", context.get("differentKey"));
     }
     
     @Test
     public void testGetParentNull() {
         Map<String, Object> vars = new HashMap<String, Object>();
         vars.put("key", "value");
         
         context.setVars(vars);
         
         Assert.assertNull(context.get("differentKey"));
     }
     
     @Test
     public void testGetParentWrongValue() {
         Map<String, Object> parentVars = new HashMap<String, Object>();
         parentVars.put("differentKey", "differentValue");
         
         SimpleContext parentContext = new SimpleContext(null, parentVars);
         
         Map<String, Object> vars = new HashMap<String, Object>();
         vars.put("key", "value");
         
         context.setVars(vars);
         context = new SimpleContext(parentContext, parentVars);
         
         Assert.assertNull(context.get("reallyDifferentKey"));
     }
 
     @Test
     public void testSetVarsChangeValue() {
         Map<String, Object> vars = new HashMap<String, Object>();
         vars.put("key", "value");
         
         context.setVars(vars);
         
         context.set("key", "newValue");
         
         Assert.assertEquals("newValue", context.get("key"));
     }
 
     @Test
     public void testSetVarsEmpty() {
         Map<String, Object> vars = new HashMap<String, Object>();
         context.setVars(vars);
         
         context.set("key", "newValue");
         
         Assert.assertEquals("newValue", context.get("key"));
     }
     
     @Test
     public void testSetVarsParent() {
         Map<String, Object> parentVars = new HashMap<String, Object>();
         parentVars.put("differentKey", "differentValue");
         
         SimpleContext parentContext = new SimpleContext(null, parentVars);
         
         Map<String, Object> vars = new HashMap<String, Object>();
         vars.put("key", "value");
         
         context.setVars(vars);
         context = new SimpleContext(parentContext, parentVars);
         
         context.set("differentKey", "newValue");
         
         Assert.assertEquals("newValue", context.get("differentKey"));
     }
 }