| package org.apache.lucene.util; |
| |
| /** |
| * 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. |
| */ |
| |
| import java.util.Random; |
| |
| /** |
| * A random that tracks if its been initialized properly, |
| * and throws an exception if it hasn't. |
| */ |
| public class SmartRandom extends Random { |
| boolean initialized; |
| |
| SmartRandom(long seed) { |
| super(seed); |
| } |
| |
| @Override |
| protected int next(int bits) { |
| if (!initialized) { |
| System.err.println("!!! WARNING: test is using random from static initializer !!!"); |
| Thread.dumpStack(); |
| // I wish, but it causes JRE crashes |
| // throw new IllegalStateException("you cannot use this random from a static initializer in your test"); |
| } |
| return super.next(bits); |
| } |
| } |