/*
* Copyright (C) 2011 The Guava Authors
*
* 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 com.google.common.collect;
import static com.google.common.collect.BoundType.CLOSED;
import static com.google.common.collect.BoundType.OPEN;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.base.Objects;
import com.google.common.testing.NullPointerTester;
import junit.framework.TestCase;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
/**
* Tests for {@code GeneralRange}.
*
* @author Louis Wasserman
*/
@GwtCompatible(emulated = true)
public class GeneralRangeTest extends TestCase {
private static final Ordering<Integer> ORDERING = Ordering.natural().nullsFirst();
private static final List<Integer> IN_ORDER_VALUES = Arrays.asList(null, 1, 2, 3, 4, 5);
public void testCreateEmptyRangeFails() {
for (BoundType lboundType : BoundType.values()) {
for (BoundType uboundType : BoundType.values()) {
try {
GeneralRange.range(ORDERING, 4, lboundType, 2, uboundType);
fail("Expected IAE");
} catch (IllegalArgumentException expected) {}
}
}
}
public void testCreateEmptyRangeOpenOpenFails() {
for (Integer i : IN_ORDER_VALUES) {
try {
GeneralRange.range(ORDERING, i, OPEN, i, OPEN);
fail("Expected IAE");
} catch (IllegalArgumentException expected) {}
}
}
public void testCreateEmptyRangeClosedOpenSucceeds() {
for (Integer i : IN_ORDER_VALUES) {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, i, CLOSED, i, OPEN);
for (Integer j : IN_ORDER_VALUES) {
assertFalse(range.contains(j));
}
}
}
public void testCreateEmptyRangeOpenClosedSucceeds() {
for (Integer i : IN_ORDER_VALUES) {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, i, OPEN, i, CLOSED);
for (Integer j : IN_ORDER_VALUES) {
assertFalse(range.contains(j));
}
}
}
public void testCreateSingletonRangeSucceeds() {
for (Integer i : IN_ORDER_VALUES) {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, i, CLOSED, i, CLOSED);
for (Integer j : IN_ORDER_VALUES) {
assertEquals(Objects.equal(i, j), range.contains(j));
}
}
}
public void testSingletonRange() {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, 3, CLOSED, 3, CLOSED);
for (Integer i : IN_ORDER_VALUES) {
assertEquals(ORDERING.compare(i, 3) == 0, range.contains(i));
}
}
public void testLowerRange() {
for (BoundType lBoundType : BoundType.values()) {
GeneralRange<Integer> range = GeneralRange.downTo(ORDERING, 3, lBoundType);
for (Integer i : IN_ORDER_VALUES) {
assertEquals(ORDERING.compare(i, 3) > 0
|| (ORDERING.compare(i, 3) == 0 && lBoundType == CLOSED), range.contains(i));
assertEquals(ORDERING.compare(i, 3) < 0
|| (ORDERING.compare(i, 3) == 0 && lBoundType == OPEN), range.tooLow(i));
assertFalse(range.tooHigh(i));
}
}
}
public void testUpperRange() {
for (BoundType lBoundType : BoundType.values()) {
GeneralRange<Integer> range = GeneralRange.upTo(ORDERING, 3, lBoundType);
for (Integer i : IN_ORDER_VALUES) {
assertEquals(ORDERING.compare(i, 3) < 0
|| (ORDERING.compare(i, 3) == 0 && lBoundType == CLOSED), range.contains(i));
assertEquals(ORDERING.compare(i, 3) > 0
|| (ORDERING.compare(i, 3) == 0 && lBoundType == OPEN), range.tooHigh(i));
assertFalse(range.tooLow(i));
}
}
}
public void testDoublyBoundedAgainstRange() {
for (BoundType lboundType : BoundType.values()) {
for (BoundType uboundType : BoundType.values()) {
Range<Integer> range = Ranges.range(2, lboundType, 4, uboundType);
GeneralRange<Integer> gRange = GeneralRange.range(ORDERING, 2, lboundType, 4, uboundType);
for (Integer i : IN_ORDER_VALUES) {
assertEquals(i != null && range.contains(i), gRange.contains(i));
}
}
}
}
public void testIntersectAgainstMatchingEndpointsRange() {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN);
assertEquals(GeneralRange.range(ORDERING, 2, OPEN, 4, OPEN),
range.intersect(GeneralRange.range(ORDERING, 2, OPEN, 4, CLOSED)));
}
public void testIntersectAgainstBiggerRange() {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN);
assertEquals(GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN),
range.intersect(GeneralRange.range(ORDERING, null, OPEN, 5, CLOSED)));
assertEquals(GeneralRange.range(ORDERING, 2, OPEN, 4, OPEN),
range.intersect(GeneralRange.range(ORDERING, 2, OPEN, 5, CLOSED)));
assertEquals(GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN),
range.intersect(GeneralRange.range(ORDERING, 1, OPEN, 4, OPEN)));
}
public void testIntersectAgainstSmallerRange() {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, OPEN, 4, OPEN);
assertEquals(GeneralRange.range(ORDERING, 3, CLOSED, 4, OPEN),
range.intersect(GeneralRange.range(ORDERING, 3, CLOSED, 4, CLOSED)));
}
public void testIntersectOverlappingRange() {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, OPEN, 4, CLOSED);
assertEquals(GeneralRange.range(ORDERING, 3, CLOSED, 4, CLOSED),
range.intersect(GeneralRange.range(ORDERING, 3, CLOSED, 5, CLOSED)));
assertEquals(GeneralRange.range(ORDERING, 2, OPEN, 3, OPEN),
range.intersect(GeneralRange.range(ORDERING, 1, OPEN, 3, OPEN)));
}
public void testIntersectNonOverlappingRange() {
GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, OPEN, 4, CLOSED);
assertTrue(range.intersect(GeneralRange.range(ORDERING, 5, CLOSED, 6, CLOSED)).isEmpty());
assertTrue(range.intersect(GeneralRange.range(ORDERING, 1, OPEN, 2, OPEN)).isEmpty());
}
public void testFromRangeAll() {
assertEquals(GeneralRange.all(Ordering.natural()), GeneralRange.from(Ranges.all()));
}
public void testFromRangeOneEnd() {
for (BoundType endpointType : BoundType.values()) {
assertEquals(GeneralRange.upTo(Ordering.natural(), 3, endpointType),
GeneralRange.from(Ranges.upTo(3, endpointType)));
assertEquals(GeneralRange.downTo(Ordering.natural(), 3, endpointType),
GeneralRange.from(Ranges.downTo(3, endpointType)));
}
}
public void testFromRangeTwoEnds() {
for (BoundType lowerType : BoundType.values()) {
for (BoundType upperType : BoundType.values()) {
assertEquals(GeneralRange.range(Ordering.natural(), 3, lowerType, 4, upperType),
GeneralRange.from(Ranges.range(3, lowerType, 4, upperType)));
}
}
}
public void testReverse() {
assertEquals(GeneralRange.all(ORDERING.reverse()), GeneralRange.all(ORDERING).reverse());
assertEquals(GeneralRange.downTo(ORDERING.reverse(), 3, CLOSED),
GeneralRange.upTo(ORDERING, 3, CLOSED).reverse());
assertEquals(GeneralRange.upTo(ORDERING.reverse(), 3, OPEN),
GeneralRange.downTo(ORDERING, 3, OPEN).reverse());
assertEquals(GeneralRange.range(ORDERING.reverse(), 5, OPEN, 3, CLOSED),
GeneralRange.range(ORDERING, 3, CLOSED, 5, OPEN).reverse());
}
@GwtIncompatible("NullPointerTester")
public void testNullPointers() {
NullPointerTester tester = new NullPointerTester();
tester.setDefault(Comparator.class, Ordering.arbitrary());
tester.setDefault(BoundType.class, BoundType.CLOSED);
tester.testAllPublicStaticMethods(GeneralRange.class);
}
}