/*
* 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 jakarta.el;
import org.junit.Test;
/*
* This is an absolute performance test. There is no benefit it running it as part of a standard test run so it is
* excluded due to the name starting Tester...
*/
public class TesterImportHandlerPerformance {
/*
* This test is looking at the cost of looking up a class when the standard JSP package imports are present: -
* java.lang - jakarta.servlet - jakarta.servlet.http - jakarta.servlet.jsp
*
* Before optimisation, this test took ~4.6s on markt's desktop After optimisation, this test took ~0.05s on markt's
* desktop
*/
@Test
public void testBug62453() throws Exception {
long totalTime = 0;
for (int i = 0; i < 100000; i++) {
ImportHandler ih = new ImportHandler();
ih.importPackage("jakarta.servlet");
ih.importPackage("jakarta.servlet.http");
ih.importPackage("jakarta.servlet.jsp");
long start = System.nanoTime();
ih.resolveClass("unknown");
long end = System.nanoTime();
totalTime += (end - start);
}
System.out.println("Time taken: " + totalTime + "ns");
}
}