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- /* ===========================================================
- * JFreeChart : a free chart library for the Java(tm) platform
- * ===========================================================
- *
- * (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.
- *
- * Project Info: http://www.jfree.org/jfreechart/index.html
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * USA.
- *
- * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
- * Other names may be trademarks of their respective owners.]
- *
- * --------------
- * RangeTest.java
- * --------------
- * (C) Copyright 2003-2014, by Object Refinery Limited and Contributors.
- *
- * Original Author: David Gilbert (for Object Refinery Limited);
- * Contributor(s): Sergei Ivanov;
- *
- * Changes
- * -------
- * 14-Aug-2003 : Version 1 (DG);
- * 18-Dec-2007 : Additional tests from Sergei Ivanov (DG);
- * 08-Jan-2012 : Added test for combine() method (DG);
- * 23-Feb-2014 : Added isNaNRange() test (DG);
- *
- */
- package org.jfree.data;
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertTrue;
- import static org.junit.Assert.assertNull;
- import static org.junit.Assert.fail;
- import org.jfree.chart.TestUtilities;
- import org.junit.Test;
- /**
- * Tests for the {@link Range} class.
- */
- public class RangeTest {
- /**
- * Confirm that the constructor initializes all the required fields.
- */
- @Test
- public void testConstructor() {
- Range r1 = new Range(0.1, 1000.0);
- assertEquals(r1.getLowerBound(), 0.1, 0.0d);
- assertEquals(r1.getUpperBound(), 1000.0, 0.0d);
- try {
- /*Range r2 =*/ new Range(10.0, 0.0);
- fail("Lower bound cannot be greater than the upper");
- }
- catch (Exception e) {
- // expected
- }
- }
- /**
- * Confirm that the equals method can distinguish all the required fields.
- */
- @Test
- public void testEquals() {
- Range r1 = new Range(0.0, 1.0);
- Range r2 = new Range(0.0, 1.0);
- assertEquals(r1, r2);
- assertEquals(r2, r1);
- r1 = new Range(0.0, 1.0);
- r2 = new Range(0.5, 1.0);
- assertFalse(r1.equals(r2));
- r1 = new Range(0.0, 1.0);
- r2 = new Range(0.0, 2.0);
- assertFalse(r1.equals(r2));
- // a Range object cannot be equal to a different object type
- assertFalse(r1.equals(new Double(0.0)));
- }
- /**
- * Two objects that are equal are required to return the same hashCode.
- */
- @Test
- public void testHashCode() {
- Range a1 = new Range(1.0, 100.0);
- Range a2 = new Range(1.0, 100.0);
- assertEquals(a1.hashCode(), a2.hashCode());
- a1 = new Range(-100.0, 2.0);
- a2 = new Range(-100.0, 2.0);
- assertEquals(a1.hashCode(), a2.hashCode());
- }
- /**
- * Simple tests for the contains() method.
- */
- @Test
- public void testContains() {
- Range r1 = new Range(0.0, 1.0);
- assertFalse(r1.contains(Double.NaN));
- assertFalse(r1.contains(Double.NEGATIVE_INFINITY));
- assertFalse(r1.contains(-1.0));
- assertTrue(r1.contains(0.0));
- assertTrue(r1.contains(0.5));
- assertTrue(r1.contains(1.0));
- assertFalse(r1.contains(2.0));
- assertFalse(r1.contains(Double.POSITIVE_INFINITY));
- }
- /**
- * Tests the constrain() method for various values.
- */
- @Test
- public void testConstrain() {
- Range r1 = new Range(0.0, 1.0);
- double d = r1.constrain(0.5);
- assertEquals(0.5, d, 0.0000001);
- d = r1.constrain(0.0);
- assertEquals(0.0, d, 0.0000001);
- d = r1.constrain(1.0);
- assertEquals(1.0, d, 0.0000001);
- d = r1.constrain(-1.0);
- assertEquals(0.0, d, 0.0000001);
- d = r1.constrain(2.0);
- assertEquals(1.0, d, 0.0000001);
- d = r1.constrain(Double.POSITIVE_INFINITY);
- assertEquals(1.0, d, 0.0000001);
- d = r1.constrain(Double.NEGATIVE_INFINITY);
- assertEquals(0.0, d, 0.0000001);
- d = r1.constrain(Double.NaN);
- assertTrue(Double.isNaN(d));
- }
- /**
- * Simple tests for the intersects() method.
- */
- @Test
- public void testIntersects() {
- Range r1 = new Range(0.0, 1.0);
- assertFalse(r1.intersects(-2.0, -1.0));
- assertFalse(r1.intersects(-2.0, 0.0));
- assertTrue(r1.intersects(-2.0, 0.5));
- assertTrue(r1.intersects(-2.0, 1.0));
- assertTrue(r1.intersects(-2.0, 1.5));
- assertTrue(r1.intersects(0.0, 0.5));
- assertTrue(r1.intersects(0.0, 1.0));
- assertTrue(r1.intersects(0.0, 1.5));
- assertTrue(r1.intersects(0.5, 0.6));
- assertTrue(r1.intersects(0.5, 1.0));
- assertTrue(r1.intersects(0.5, 1.5));
- assertFalse(r1.intersects(1.0, 1.1));
- assertFalse(r1.intersects(1.5, 2.0));
- }
- /**
- * A simple test for the expand() method.
- */
- @Test
- public void testExpand() {
- Range r1 = new Range(0.0, 100.0);
- Range r2 = Range.expand(r1, 0.10, 0.10);
- assertEquals(-10.0, r2.getLowerBound(), 0.001);
- assertEquals(110.0, r2.getUpperBound(), 0.001);
- // Expand by 0% does not change the range
- r2 = Range.expand(r1, 0.0, 0.0);
- assertEquals(r1, r2);
- try {
- Range.expand(null, 0.1, 0.1);
- fail("Null value is accepted");
- }
- catch (Exception e) {
- }
- // Lower > upper: mid point is used
- r2 = Range.expand(r1, -0.8, -0.5);
- assertEquals(65.0, r2.getLowerBound(), 0.001);
- assertEquals(65.0, r2.getUpperBound(), 0.001);
- }
- /**
- * A simple test for the scale() method.
- */
- @Test
- public void testShift() {
- Range r1 = new Range(10.0, 20.0);
- Range r2 = Range.shift(r1, 20.0);
- assertEquals(30.0, r2.getLowerBound(), 0.001);
- assertEquals(40.0, r2.getUpperBound(), 0.001);
- r1 = new Range(0.0, 100.0);
- r2 = Range.shift(r1, -50.0, true);
- assertEquals(-50.0, r2.getLowerBound(), 0.001);
- assertEquals(50.0, r2.getUpperBound(), 0.001);
- r1 = new Range(-10.0, 20.0);
- r2 = Range.shift(r1, 20.0, true);
- assertEquals(10.0, r2.getLowerBound(), 0.001);
- assertEquals(40.0, r2.getUpperBound(), 0.001);
- r1 = new Range(-10.0, 20.0);
- r2 = Range.shift(r1, -30.0, true);
- assertEquals(-40.0, r2.getLowerBound(), 0.001);
- assertEquals(-10.0, r2.getUpperBound(), 0.001);
- r1 = new Range(-10.0, 20.0);
- r2 = Range.shift(r1, 20.0, false);
- assertEquals(0.0, r2.getLowerBound(), 0.001);
- assertEquals(40.0, r2.getUpperBound(), 0.001);
- r1 = new Range(-10.0, 20.0);
- r2 = Range.shift(r1, -30.0, false);
- assertEquals(-40.0, r2.getLowerBound(), 0.001);
- assertEquals(0.0, r2.getUpperBound(), 0.001);
- // Shifting with a delta of 0 does not change the range
- r2 = Range.shift(r1, 0.0);
- assertEquals(r1, r2);
- try {
- Range.shift(null, 0.1);
- fail("Null value is accepted");
- }
- catch (Exception e) {
- }
- }
- /**
- * A simple test for the scale() method.
- */
- @Test
- public void testScale() {
- Range r1 = new Range(0.0, 100.0);
- Range r2 = Range.scale(r1, 0.10);
- assertEquals(0.0, r2.getLowerBound(), 0.001);
- assertEquals(10.0, r2.getUpperBound(), 0.001);
- r1 = new Range(-10.0, 100.0);
- r2 = Range.scale(r1, 2.0);
- assertEquals(-20.0, r2.getLowerBound(), 0.001);
- assertEquals(200.0, r2.getUpperBound(), 0.001);
- // Scaling with a factor of 1 does not change the range
- r2 = Range.scale(r1, 1.0);
- assertEquals(r1, r2);
- try {
- Range.scale(null, 0.1);
- fail("Null value is accepted");
- }
- catch (Exception e) {
- }
- try {
- Range.scale(r1, -0.5);
- fail("Negative factor accepted");
- }
- catch (Exception e) {
- }
- }
- /**
- * Serialize an instance, restore it, and check for equality.
- */
- @Test
- public void testSerialization() {
- Range r1 = new Range(25.0, 133.42);
- Range r2 = (Range) TestUtilities.serialised(r1);
- assertEquals(r1, r2);
- }
- private static final double EPSILON = 0.0000000001;
- /**
- * Some checks for the combine method.
- */
- @Test
- public void testCombine() {
- Range r1 = new Range(1.0, 2.0);
- Range r2 = new Range(1.5, 2.5);
- assertNull(Range.combine(null, null));
- assertEquals(r1, Range.combine(r1, null));
- assertEquals(r2, Range.combine(null, r2));
- assertEquals(new Range(1.0, 2.5), Range.combine(r1, r2));
- Range r3 = new Range(Double.NaN, 1.3);
- Range rr = Range.combine(r1, r3);
- assertTrue(Double.isNaN(rr.getLowerBound()));
- assertEquals(2.0, rr.getUpperBound(), EPSILON);
- Range r4 = new Range(1.7, Double.NaN);
- rr = Range.combine(r4, r1);
- assertEquals(1.0, rr.getLowerBound(), EPSILON);
- assertTrue(Double.isNaN(rr.getUpperBound()));
- }
- /**
- * Some checks for the combineIgnoringNaN() method.
- */
- @Test
- public void testCombineIgnoringNaN() {
- Range r1 = new Range(1.0, 2.0);
- Range r2 = new Range(1.5, 2.5);
- assertNull(Range.combineIgnoringNaN(null, null));
- assertEquals(r1, Range.combineIgnoringNaN(r1, null));
- assertEquals(r2, Range.combineIgnoringNaN(null, r2));
- assertEquals(new Range(1.0, 2.5), Range.combineIgnoringNaN(r1, r2));
- Range r3 = new Range(Double.NaN, 1.3);
- Range rr = Range.combineIgnoringNaN(r1, r3);
- assertEquals(1.0, rr.getLowerBound(), EPSILON);
- assertEquals(2.0, rr.getUpperBound(), EPSILON);
- Range r4 = new Range(1.7, Double.NaN);
- rr = Range.combineIgnoringNaN(r4, r1);
- assertEquals(1.0, rr.getLowerBound(), EPSILON);
- assertEquals(2.0, rr.getUpperBound(), EPSILON);
- }
-
- @Test
- public void testIsNaNRange() {
- assertTrue(new Range(Double.NaN, Double.NaN).isNaNRange());
- assertFalse(new Range(1.0, 2.0).isNaNRange());
- assertFalse(new Range(Double.NaN, 2.0).isNaNRange());
- assertFalse(new Range(1.0, Double.NaN).isNaNRange());
- }
- }
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