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Java example source code file (RandomAdaptorTest.java)
The RandomAdaptorTest.java Java example source code/* * 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.commons.math3.random; import java.util.Random; import org.junit.Assert; import org.junit.Test; /** * Test cases for the RandomAdaptor class * */ public class RandomAdaptorTest { @Test public void testAdaptor() { ConstantGenerator generator = new ConstantGenerator(); Random random = RandomAdaptor.createAdaptor(generator); checkConstant(random); RandomAdaptor randomAdaptor = new RandomAdaptor(generator); checkConstant(randomAdaptor); } private void checkConstant(Random random) { byte[] bytes = new byte[] {0}; random.nextBytes(bytes); Assert.assertEquals(0, bytes[0]); Assert.assertFalse(random.nextBoolean()); Assert.assertEquals(0, random.nextDouble(), 0); Assert.assertEquals(0, random.nextFloat(), 0); Assert.assertEquals(0, random.nextGaussian(), 0); Assert.assertEquals(0, random.nextInt()); Assert.assertEquals(0, random.nextInt(1)); Assert.assertEquals(0, random.nextLong()); random.setSeed(100); Assert.assertEquals(0, random.nextDouble(), 0); } /* * "Constant" generator to test Adaptor delegation. * "Powered by Eclipse ;-)" * */ public static class ConstantGenerator implements RandomGenerator { private final double value; public ConstantGenerator() { value = 0; } public ConstantGenerator(double value) { this.value = value; } public boolean nextBoolean() { return false; } public void nextBytes(byte[] bytes) { } public double nextDouble() { return value; } public float nextFloat() { return (float) value; } public double nextGaussian() { return value; } public int nextInt() { return (int) value; } public int nextInt(int n) { return (int) value; } public long nextLong() { return (int) value; } public void setSeed(int seed) { } public void setSeed(int[] seed) { } public void setSeed(long seed) { } } } Other Java examples (source code examples)Here is a short list of links related to this Java RandomAdaptorTest.java source code file: |
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