content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.
   */
  package com.alibaba.druid.bvt.support.http;
  
  import com.alibaba.druid.support.http.WebStatFilter;
  import com.alibaba.druid.support.http.stat.WebAppStat;
  import junit.framework.TestCase;
  import org.springframework.mock.web.MockFilterChain;
  import org.springframework.mock.web.MockFilterConfig;
  import org.springframework.mock.web.MockHttpServletRequest;
  import org.springframework.mock.web.MockHttpServletResponse;
  import org.springframework.mock.web.MockHttpSession;
  import org.springframework.mock.web.MockServletContext;
  
  public class WebStatFilterTest2 extends TestCase {
      public void test_lru() throws Exception {
          MockServletContext servletContext = new MockServletContext();
  
          MockFilterConfig filterConfig = new MockFilterConfig(servletContext);
          filterConfig.addInitParameter(WebStatFilter.PARAM_NAME_SESSION_STAT_MAX_COUNT, "3");
  
          WebStatFilter filter = new WebStatFilter();
  
          filter.init(filterConfig);
  
          WebAppStat appStat = filter.getWebAppStat();
  
          assertEquals(3, filter.getSessionStatMaxCount());
          assertEquals(0, appStat.getSessionStatDataList().size());
  
          final MockHttpSession session_0 = new MockHttpSession(servletContext);
          final MockHttpSession session_1 = new MockHttpSession(servletContext);
          final MockHttpSession session_2 = new MockHttpSession(servletContext);
          final MockHttpSession session_3 = new MockHttpSession(servletContext);
          final MockHttpSession session_4 = new MockHttpSession(servletContext);
  
          // 第一个session请求2次
          {
              assertNull(appStat.getSessionStat(session_0.getId()));
  
              MockHttpServletRequest request = new MockHttpServletRequest();
              MockHttpServletResponse response = new MockHttpServletResponse();
              MockFilterChain chain = new MockFilterChain() {
                  public void doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) {
                      ((MockHttpServletRequest) request).setSession(session_0);
                  }
  
                  };
  
              filter.doFilter(request, response, chain);
  
              assertEquals(1, appStat.getSessionStatDataList().size());
              assertEquals(1, appStat.getSessionStat(session_0.getId()).getRequestCount());
  
              assertTrue(appStat.getSessionStat(session_0.getId()).getLastAccessTimeMillis() > 0);
          }
          {
              MockHttpServletRequest request = new MockHttpServletRequest();
              MockHttpServletResponse response = new MockHttpServletResponse();
              MockFilterChain chain = new MockFilterChain() {
                  public void doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) {
                      ((MockHttpServletRequest) request).setSession(session_0);
                  }
  
                  };
  
              filter.doFilter(request, response, chain);
  
              assertEquals(1, appStat.getSessionStatDataList().size());
              assertEquals(2, appStat.getSessionStat(session_0.getId()).getRequestCount());
          }
  
          // 第2个sesion请求1次
          {
              MockHttpServletRequest request = new MockHttpServletRequest();
              MockHttpServletResponse response = new MockHttpServletResponse();
              MockFilterChain chain = new MockFilterChain() {
                  public void doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) {
                      ((MockHttpServletRequest) request).setSession(session_1);
                  }
  
                  };
  
              filter.doFilter(request, response, chain);
  
              assertEquals(2, appStat.getSessionStatDataList().size());
              assertEquals(2, appStat.getSessionStat(session_0.getId()).getRequestCount());
              assertEquals(1, appStat.getSessionStat(session_1.getId()).getRequestCount());
          }
  
          // 第3个sesion请求1次
          {
              MockHttpServletRequest request = new MockHttpServletRequest();
              MockHttpServletResponse response = new MockHttpServletResponse();
              MockFilterChain chain = new MockFilterChain() {
                  public void doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) {
                      ((MockHttpServletRequest) request).setSession(session_2);
                  }
  
                  };
  
              filter.doFilter(request, response, chain);
  
              assertEquals(3, appStat.getSessionStatDataList().size());
              assertEquals(2, appStat.getSessionStat(session_0.getId()).getRequestCount());
              assertEquals(1, appStat.getSessionStat(session_1.getId()).getRequestCount());
              assertEquals(1, appStat.getSessionStat(session_2.getId()).getRequestCount());
          }
  
          // 第4个sesion请求1次
          {
              MockHttpServletRequest request = new MockHttpServletRequest();
              MockHttpServletResponse response = new MockHttpServletResponse();
              MockFilterChain chain = new MockFilterChain() {
                  public void doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) {
                      ((MockHttpServletRequest) request).setSession(session_3);
                  }
  
                  };
  
              filter.doFilter(request, response, chain);
  
              assertEquals(3, appStat.getSessionStatDataList().size());
              assertNull(appStat.getSessionStat(session_0.getId()));
              assertEquals(1, appStat.getSessionStat(session_1.getId()).getRequestCount());
              assertEquals(1, appStat.getSessionStat(session_2.getId()).getRequestCount());
              assertEquals(1, appStat.getSessionStat(session_3.getId()).getRequestCount());
          }
  
          // 第5个sesion请求1次
          {
              MockHttpServletRequest request = new MockHttpServletRequest();
              MockHttpServletResponse response = new MockHttpServletResponse();
              MockFilterChain chain = new MockFilterChain() {
                  public void doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) {
                      ((MockHttpServletRequest) request).setSession(session_4);
                  }
  
                  };
  
              filter.doFilter(request, response, chain);
  
              assertEquals(3, appStat.getSessionStatDataList().size());
              assertNull(appStat.getSessionStat(session_0.getId()));
              assertNull(appStat.getSessionStat(session_1.getId()));
              assertEquals(1, appStat.getSessionStat(session_2.getId()).getRequestCount());
              assertEquals(1, appStat.getSessionStat(session_3.getId()).getRequestCount());
              assertEquals(1, appStat.getSessionStat(session_4.getId()).getRequestCount());
          }
      }
  }
  