| /* |
| * 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.catalina.filters; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import org.apache.catalina.filters.CsrfPreventionFilter.LruCache; |
| |
| public class TestCsrfPreventionFilter2 { |
| |
| /* |
| * When this test fails, it tends to enter a long running loop but it will |
| * eventually finish (after ~70s on a 8-core Windows box). |
| */ |
| @Test |
| public void testLruCacheConcurrency() throws Exception { |
| int threadCount = 2; |
| long iterationCount = 100000L; |
| |
| Assert.assertTrue(threadCount > 1); |
| |
| LruCache<String> cache = new LruCache<>(threadCount - 1); |
| |
| LruTestThread[] threads = new LruTestThread[threadCount]; |
| for (int i = 0; i < threadCount; i++) { |
| threads[i] = new LruTestThread(cache, iterationCount); |
| } |
| |
| for (int i = 0; i < threadCount; i++) { |
| threads[i].start(); |
| } |
| |
| for (int i = 0; i < threadCount; i++) { |
| threads[i].join(); |
| } |
| |
| for (int i = 0; i < threadCount; i++) { |
| Assert.assertTrue(threads[i].getResult()); |
| } |
| |
| } |
| |
| private static class LruTestThread extends Thread { |
| private final LruCache<String> cache; |
| private long iterationCount = 0; |
| private volatile boolean result = false; |
| |
| public LruTestThread(LruCache<String> cache, long iterationCount) { |
| this.cache = cache; |
| this.iterationCount = iterationCount; |
| } |
| |
| public boolean getResult() { |
| return result; |
| } |
| |
| @Override |
| public void run() { |
| String test = getName(); |
| try { |
| for (long i = 0; i < iterationCount; i++) { |
| cache.add(test + i); |
| if (!cache.contains(test + i)) { |
| // Expected |
| } |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| return; |
| } |
| result = true; |
| } |
| } |
| } |