Javadoc.
git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@359173 13f79535-47bb-0310-9956-ffa450edef68
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/*
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/*
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* Copyright 2003-2004 The Apache Software Foundation.
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* Copyright 2003-2005 The Apache Software Foundation.
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*
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* you may not use this file except in compliance with the License.
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@ -34,12 +34,16 @@ import org.apache.commons.math.complex.ComplexFormat;
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*/
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*/
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public class TestUtils {
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public class TestUtils {
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/**
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/**
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*
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* Collection of static methods used in math unit tests.
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*/
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*/
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private TestUtils() {
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private TestUtils() {
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super();
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super();
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}
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}
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/**
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* Verifies that expected and actual are within delta, or are both NaN or
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* infinities of the same sign.
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*/
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public static void assertEquals(double expected, double actual, double delta) {
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public static void assertEquals(double expected, double actual, double delta) {
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assertEquals(null, expected, actual, delta);
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assertEquals(null, expected, actual, delta);
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}
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}
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@ -58,7 +62,7 @@ public class TestUtils {
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}
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}
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}
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}
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/*
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/**
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* Verifies that the two arguments are exactly the same, either
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* Verifies that the two arguments are exactly the same, either
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* both NaN or infinities of same sign, or identical floating point values.
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* both NaN or infinities of same sign, or identical floating point values.
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*/
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*/
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@ -94,6 +98,13 @@ public class TestUtils {
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}
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}
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}
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}
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/**
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* Serializes an object to a temp file and then recovers the object from the file.
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* Returns the deserialized object.
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*
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* @param o object to serialize and recover
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* @return the recovered, deseriailized object
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*/
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public static Object serializeAndRecover(Object o){
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public static Object serializeAndRecover(Object o){
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Object result = null;
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Object result = null;
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@ -140,9 +151,10 @@ public class TestUtils {
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}
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}
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/**
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/**
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* Verifies that serialization preserves equals and hashCode
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* Verifies that serialization preserves equals and hashCode.
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* Serializes the object, then recovers it and checks equals and hash code.
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*
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*
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* @param object
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* @param object the object to serialize and recover
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*/
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*/
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public static void checkSerializedEquality(Object object) {
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public static void checkSerializedEquality(Object object) {
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Object object2 = serializeAndRecover(object);
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Object object2 = serializeAndRecover(object);
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@ -150,11 +162,32 @@ public class TestUtils {
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Assert.assertEquals("HashCode check", object.hashCode(), object2.hashCode());
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Assert.assertEquals("HashCode check", object.hashCode(), object2.hashCode());
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}
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}
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public static void assertRelativelyEquals(double expected, double actual, double relativeError) {
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/**
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* Verifies that the relative error in actual vs. expected is less than or
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* equal to relativeError. If expected is infinite or NaN, actual must be
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* the same (NaN or infinity of the same sign).
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*
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* @param expected expected value
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* @param actual observed value
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* @param relativeError maximum allowable relative error
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*/
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public static void assertRelativelyEquals(double expected, double actual,
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double relativeError) {
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assertRelativelyEquals(null, expected, actual, relativeError);
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assertRelativelyEquals(null, expected, actual, relativeError);
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}
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}
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public static void assertRelativelyEquals(String msg, double expected, double actual, double relativeError) {
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/**
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* Verifies that the relative error in actual vs. expected is less than or
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* equal to relativeError. If expected is infinite or NaN, actual must be
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* the same (NaN or infinity of the same sign).
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*
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* @param msg message to return with failure
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* @param expected expected value
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* @param actual observed value
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* @param relativeError maximum allowable relative error
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*/
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public static void assertRelativelyEquals(String msg, double expected,
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double actual, double relativeError) {
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if (Double.isNaN(expected)) {
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if (Double.isNaN(expected)) {
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Assert.assertTrue(msg, Double.isNaN(actual));
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Assert.assertTrue(msg, Double.isNaN(actual));
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} else if (Double.isNaN(actual)) {
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} else if (Double.isNaN(actual)) {
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