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* 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.
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package org.apache.commons.math4.geometry.euclidean.oned;
import org.apache.commons.math4.geometry.euclidean.oned.Interval;
import org.apache.commons.math4.geometry.partitioning.Region;
import org.apache.commons.math4.util.FastMath;
import org.apache.commons.numbers.core.Precision;
import org.apache.commons.math4.exception.NumberIsTooSmallException;
import org.junit.Assert;
import org.junit.Test;
public class IntervalTest {
@Test
public void testInterval() {
Interval interval = new Interval(2.3, 5.7);
Assert.assertEquals(3.4, interval.getSize(), 1.0e-10);
Assert.assertEquals(4.0, interval.getBarycenter(), 1.0e-10);
Assert.assertEquals(Region.Location.BOUNDARY, interval.checkPoint(2.3, 1.0e-10));
Assert.assertEquals(Region.Location.BOUNDARY, interval.checkPoint(5.7, 1.0e-10));
Assert.assertEquals(Region.Location.OUTSIDE, interval.checkPoint(1.2, 1.0e-10));
Assert.assertEquals(Region.Location.OUTSIDE, interval.checkPoint(8.7, 1.0e-10));
Assert.assertEquals(Region.Location.INSIDE, interval.checkPoint(3.0, 1.0e-10));
Assert.assertEquals(2.3, interval.getInf(), 1.0e-10);
Assert.assertEquals(5.7, interval.getSup(), 1.0e-10);
}
@Test
public void testTolerance() {
Interval interval = new Interval(2.3, 5.7);
Assert.assertEquals(Region.Location.OUTSIDE, interval.checkPoint(1.2, 1.0));
Assert.assertEquals(Region.Location.BOUNDARY, interval.checkPoint(1.2, 1.2));
Assert.assertEquals(Region.Location.OUTSIDE, interval.checkPoint(8.7, 2.9));
Assert.assertEquals(Region.Location.BOUNDARY, interval.checkPoint(8.7, 3.1));
Assert.assertEquals(Region.Location.INSIDE, interval.checkPoint(3.0, 0.6));
Assert.assertEquals(Region.Location.BOUNDARY, interval.checkPoint(3.0, 0.8));
}
@Test
public void testInfinite() {
Interval interval = new Interval(9.0, Double.POSITIVE_INFINITY);
Assert.assertEquals(Region.Location.BOUNDARY, interval.checkPoint(9.0, 1.0e-10));
Assert.assertEquals(Region.Location.OUTSIDE, interval.checkPoint(8.4, 1.0e-10));
for (double e = 1.0; e <= 6.0; e += 1.0) {
Assert.assertEquals(Region.Location.INSIDE,
interval.checkPoint(FastMath.pow(10.0, e), 1.0e-10));
}
Assert.assertTrue(Double.isInfinite(interval.getSize()));
Assert.assertEquals(9.0, interval.getInf(), 1.0e-10);
Assert.assertTrue(Double.isInfinite(interval.getSup()));
}
@Test
public void testSinglePoint() {
Interval interval = new Interval(1.0, 1.0);
Assert.assertEquals(0.0, interval.getSize(), Precision.SAFE_MIN);
Assert.assertEquals(1.0, interval.getBarycenter(), Precision.EPSILON);
}
// MATH-1256
@Test(expected=NumberIsTooSmallException.class)
public void testStrictOrdering() {
new Interval(0, -1);
}
}