question: public void testMergeSameFilterWithInitParamInTwoDocuments ( ) throws Exception { String srcXml = "<web-app>" + "  <filter>" + "    <filter-name>f1</filter-name>" + "    <filter-class>fclass1</filter-class>" + "    <init-param>" + "      <param-name>fparamName</param-name>" + "      <param-value>fparamValue</param-value>" + "    </init-param>" + "  </filter>" + "  <filter-mapping>" + "    <filter-name>f1</filter-name>" + "    <url-pattern>/f1mapping1</url-pattern>" + "  </filter-mapping>" + "</web-app>" ; WebXml srcWebXml = WebXmlIo . parseWebXml ( new ByteArrayInputStream ( srcXml . getBytes ( "UTF-8" ) ) , null ) ; String mergeXml = "<web-app>" + "  <filter>" + "    <filter-name>f1</filter-name>" + "    <filter-class>fclass1</filter-class>" + "    <init-param>" + "      <param-name>fparamName</param-name>" + "      <param-value>fparamValue</param-value>" + "    </init-param>" + "  </filter>" + "  <filter-mapping>" + "    <filter-name>f1</filter-name>" + "    <url-pattern>/f1mapping1</url-pattern>" + "  </filter-mapping>" + "</web-app>" ; WebXml mergeWebXml = WebXmlIo . parseWebXml ( new ByteArrayInputStream ( mergeXml . getBytes ( "UTF-8" ) ) , null ) ; WebXmlMerger merger = new WebXmlMerger ( srcWebXml ) ; merger . mergeFilters ( mergeWebXml ) ; assertTrue ( WebXmlUtils . hasFilter ( srcWebXml , "f1" ) ) ; List < String > filterInitParamNames = WebXmlUtils . getFilterInitParamNames ( srcWebXml , "f1" ) ; assertTrue ( filterInitParamNames . size ( ) == 1 ) ; assertEquals ( "fparamName" , filterInitParamNames . get ( 0 ) ) ; List < String > filterMappings = WebXmlUtils . getFilterMappings ( srcWebXml , "f1" ) ; assertEquals ( 1 , filterMappings . size ( ) ) ; assertEquals ( "/f1mapping1" , filterMappings . get ( 0 ) ) ; }
target:  Tests whether the same filter in two different files is mapped correctly (i.e., once).