/*
* Copyright 2015 MovingBlocks
*
* Licensed 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.terasology.math;
import org.junit.Test;
import java.util.Iterator;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class IntegerRangeTest {
@Test
public void testNoRange() {
IntegerRange range = new IntegerRange();
validateRange(range);
}
@Test(expected = IllegalArgumentException.class)
public void testIncorrectRange() {
IntegerRange range = new IntegerRange();
range.addNumbers(3, 2);
}
@Test
public void testSimpleRange() {
IntegerRange range = new IntegerRange();
range.addNumbers(1, 3);
validateRange(range, 1, 2, 3);
}
@Test
public void testOneNumberRange() {
IntegerRange range = new IntegerRange();
range.addNumbers(1, 1);
validateRange(range, 1);
}
@Test
public void testTwoRanges() {
IntegerRange range = new IntegerRange();
range.addNumbers(1, 3);
range.addNumbers(5, 6);
validateRange(range, 1, 2, 3, 5, 6);
}
@Test
public void testTwoRangesAddedInReverseOrder() {
IntegerRange range = new IntegerRange();
range.addNumbers(5, 6);
range.addNumbers(1, 3);
validateRange(range, 1, 2, 3, 5, 6);
}
@Test
public void testTwoRangesOneWithinAnother() {
IntegerRange range = new IntegerRange();
range.addNumbers(1, 6);
range.addNumbers(3, 5);
validateRange(range, 1, 2, 3, 4, 5, 6);
}
@Test
public void testTwoRangesOverlapping() {
IntegerRange range = new IntegerRange();
range.addNumbers(1, 4);
range.addNumbers(3, 6);
validateRange(range, 1, 2, 3, 4, 5, 6);
}
@Test
public void testTwoRangesAtTheMaxInt() {
IntegerRange range = new IntegerRange();
range.addNumbers(Integer.MAX_VALUE - 3, Integer.MAX_VALUE);
range.addNumbers(Integer.MAX_VALUE - 1, Integer.MAX_VALUE);
validateRange(range, Integer.MAX_VALUE - 3, Integer.MAX_VALUE - 2, Integer.MAX_VALUE - 1, Integer.MAX_VALUE);
}
private void validateRange(IntegerRange range, Integer...numbers) {
Iterator<Integer> iterator = range.iterator();
for (Integer number : numbers) {
assertTrue(iterator.hasNext());
assertEquals(number, iterator.next());
}
assertFalse(iterator.hasNext());
}
}