/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.http.protocol;
  
  import org.junit.Assert;
  import org.junit.Test;
  
  // the name of this test is historic, the implementation classes of HttpContext
  // have been renamed to BasicHttpContext and SyncBasicHttpContext
  public class TestHttpExecutionContext {
  
      @Test
      public void testContextOperations() {
          final HttpContext parentContext = new BasicHttpContext(null);
          final HttpContext currentContext = new BasicHttpContext(parentContext);
  
          parentContext.setAttribute("param1", "1");
          parentContext.setAttribute("param2", "2");
          currentContext.setAttribute("param3", "3");
          currentContext.setAttribute("param2", "4");
  
          Assert.assertEquals("1", parentContext.getAttribute("param1"));
          Assert.assertEquals("2", parentContext.getAttribute("param2"));
          Assert.assertEquals(null, parentContext.getAttribute("param3"));
  
          Assert.assertEquals("1", currentContext.getAttribute("param1"));
          Assert.assertEquals("4", currentContext.getAttribute("param2"));
          Assert.assertEquals("3", currentContext.getAttribute("param3"));
          Assert.assertEquals(null, currentContext.getAttribute("param4"));
  
          currentContext.removeAttribute("param1");
          currentContext.removeAttribute("param2");
          currentContext.removeAttribute("param3");
          currentContext.removeAttribute("param4");
  
          Assert.assertEquals("1", currentContext.getAttribute("param1"));
          Assert.assertEquals("2", currentContext.getAttribute("param2"));
          Assert.assertEquals(null, currentContext.getAttribute("param3"));
          Assert.assertEquals(null, currentContext.getAttribute("param4"));
      }
  
      @Test
      public void testEmptyContextOperations() {
          final HttpContext currentContext = new BasicHttpContext(null);
          Assert.assertEquals(null, currentContext.getAttribute("param1"));
          currentContext.removeAttribute("param1");
          Assert.assertEquals(null, currentContext.getAttribute("param1"));
      }
  
      @Test
      public void testContextInvalidInput() throws Exception {
          final HttpContext currentContext = new BasicHttpContext(null);
          try {
              currentContext.setAttribute(null, null);
              Assert.fail("NullPointerException should have been thrown");
          } catch (final NullPointerException ex) {
              // expected
          }
          try {
              currentContext.getAttribute(null);
              Assert.fail("NullPointerException should have been thrown");
          } catch (final NullPointerException ex) {
              // expected
          }
          try {
              currentContext.removeAttribute(null);
              Assert.fail("NullPointerException should have been thrown");
          } catch (final NullPointerException ex) {
              // expected
          }
      }
  
  }