pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / test-framework / java / org / apache / lucene / util / SmartRandom.java

diff --git a/lucene-java-3.5.0/lucene/src/test-framework/java/org/apache/lucene/util/SmartRandom.java b/lucene-java-3.5.0/lucene/src/test-framework/java/org/apache/lucene/util/SmartRandom.java
new file mode 100644 (file)
index 0000000..8e92ba2
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/test-framework/java/org/apache/lucene/util/SmartRandom.java
@@ -0,0 +1,43 @@
+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);
+  }
+}