/*
 * 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.
 */
package org.apache.maven.artifact.versioning;

import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;

/**
 * Tests version range construction.
 *
 * @author <a href="mailto:brett@apache.org">Brett Porter</a>
 */
public class VersionRangeTest {
    private static final String CHECK_NUM_RESTRICTIONS = "check number of restrictions";

    private static final String CHECK_UPPER_BOUND = "check upper bound";

    private static final String CHECK_UPPER_BOUND_INCLUSIVE = "check upper bound is inclusive";

    private static final String CHECK_LOWER_BOUND = "check lower bound";

    private static final String CHECK_LOWER_BOUND_INCLUSIVE = "check lower bound is inclusive";

    private static final String CHECK_VERSION_RECOMMENDATION = "check version recommended";

    private static final String CHECK_SELECTED_VERSION_KNOWN = "check selected version known";

    private static final String CHECK_SELECTED_VERSION = "check selected version";

    @Test
    public void testRange() throws InvalidVersionSpecificationException, OverConstrainedVersionException {
        Artifact artifact = null;

        VersionRange range = VersionRange.createFromVersionSpec("(,1.0]");
        List<Restriction> restrictions = range.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        Restriction restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.0", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("1.0");
        assertEquals("1.0", range.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = range.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertTrue(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertEquals("1.0", range.getSelectedVersion(artifact).toString(), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("[1.0]");
        restrictions = range.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.0", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.0", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("[1.2,1.3]");
        restrictions = range.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("[1.0,2.0)");
        restrictions = range.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.0", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("2.0", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("[1.5,)");
        restrictions = range.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.5", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("(,1.0],[1.2,)");
        restrictions = range.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.0", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restriction = restrictions.get(1);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("[1.0,)");
        assertFalse(range.containsVersion(new DefaultArtifactVersion("1.0-SNAPSHOT")));

        range = VersionRange.createFromVersionSpec("[1.0,1.1-SNAPSHOT]");
        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.1-SNAPSHOT")));

        range = VersionRange.createFromVersionSpec("[5.0.9.0,5.0.10.0)");
        assertTrue(range.containsVersion(new DefaultArtifactVersion("5.0.9.0")));
    }

    @Test
    public void testSameUpperAndLowerBoundRoundtrip() throws InvalidVersionSpecificationException {
        VersionRange range = VersionRange.createFromVersionSpec("[1.0]");
        VersionRange range2 = VersionRange.createFromVersionSpec(range.toString());
        assertEquals(range, range2);
    }

    @Test
    public void testInvalidRanges() {
        checkInvalidRange("(1.0)");
        checkInvalidRange("[1.0)");
        checkInvalidRange("(1.0]");
        checkInvalidRange("(1.0,1.0]");
        checkInvalidRange("[1.0,1.0)");
        checkInvalidRange("(1.0,1.0)");
        checkInvalidRange("[1.1,1.0]");
        checkInvalidRange("[1.0,1.2),1.3");
        // overlap
        checkInvalidRange("[1.0,1.2),(1.1,1.3]");
        // overlap
        checkInvalidRange("[1.1,1.3),(1.0,1.2]");
        // ordering
        checkInvalidRange("(1.1,1.2],[1.0,1.1)");
    }

    @SuppressWarnings("checkstyle:MethodLength")
    @Test
    public void testIntersections() throws InvalidVersionSpecificationException {
        VersionRange range1 = VersionRange.createFromVersionSpec("1.0");
        VersionRange range2 = VersionRange.createFromVersionSpec("1.1");
        VersionRange mergedRange = range1.restrict(range2);
        // TODO current policy is to retain the original version - is this correct, do we need strategies or is that
        // handled elsewhere?
        //        assertEquals( CHECK_VERSION_RECOMMENDATION, "1.1", mergedRange.getRecommendedVersion().toString() );
        assertEquals("1.0", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        List<Restriction> restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        Restriction restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        mergedRange = range2.restrict(range1);
        assertEquals("1.1", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        // TODO test reversed restrictions on all below
        range1 = VersionRange.createFromVersionSpec("[1.0,)");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertEquals("1.1", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.0", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.1,)");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertEquals("1.1", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.1]");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertEquals("1.1", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(1.1,)");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.2,)");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.2]");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertEquals("1.1", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.1]");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertEquals("1.1", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.1", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.1)");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.1", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.0]");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.0", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.0], [1.1,)");
        range2 = VersionRange.createFromVersionSpec("1.2");
        mergedRange = range1.restrict(range2);
        assertEquals("1.2", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.0", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.0], [1.1,)");
        range2 = VersionRange.createFromVersionSpec("1.0.5");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.0", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.1), (1.1,)");
        range2 = VersionRange.createFromVersionSpec("1.1");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertNull(restriction.getLowerBound(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.1", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertNull(restriction.getUpperBound(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.1,1.3]");
        range2 = VersionRange.createFromVersionSpec("(1.1,)");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.3)");
        range2 = VersionRange.createFromVersionSpec("[1.2,1.3]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.1,1.3]");
        range2 = VersionRange.createFromVersionSpec("[1.2,)");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.3]");
        range2 = VersionRange.createFromVersionSpec("[1.2,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(1.2,1.3]");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(1.2,1.3)");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.2,1.3)");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.2", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.3", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.1]");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.1", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.1)");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(0, restrictions.size(), CHECK_NUM_RESTRICTIONS);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2],[1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("[1.1]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.1", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2],[1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("[1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.4", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2],[1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.3", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2),(1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.3", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2],[1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("(1.1,1.4)");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.3", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2),(1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("(1.1,1.4)");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.3", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertFalse(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertFalse(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("(,1.1),(1.4,)");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(0, restrictions.size(), CHECK_NUM_RESTRICTIONS);

        range1 = VersionRange.createFromVersionSpec("(,1.1],[1.4,)");
        range2 = VersionRange.createFromVersionSpec("(1.1,1.4)");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(0, restrictions.size(), CHECK_NUM_RESTRICTIONS);

        range1 = VersionRange.createFromVersionSpec("[,1.1],[1.4,]");
        range2 = VersionRange.createFromVersionSpec("[1.2,1.3]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(0, restrictions.size(), CHECK_NUM_RESTRICTIONS);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2],[1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4],[1.6,]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(2, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.3", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2],[1.3,1.5]");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4],[1.5,]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(3, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.3", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(2);
        assertEquals("1.5", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.5", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        range1 = VersionRange.createFromVersionSpec("[1.0,1.2],[1.3,1.7]");
        range2 = VersionRange.createFromVersionSpec("[1.1,1.4],[1.5,1.6]");
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(3, restrictions.size(), CHECK_NUM_RESTRICTIONS);
        restriction = restrictions.get(0);
        assertEquals("1.1", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.2", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(1);
        assertEquals("1.3", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.4", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);
        restriction = restrictions.get(2);
        assertEquals("1.5", restriction.getLowerBound().toString(), CHECK_LOWER_BOUND);
        assertTrue(restriction.isLowerBoundInclusive(), CHECK_LOWER_BOUND_INCLUSIVE);
        assertEquals("1.6", restriction.getUpperBound().toString(), CHECK_UPPER_BOUND);
        assertTrue(restriction.isUpperBoundInclusive(), CHECK_UPPER_BOUND_INCLUSIVE);

        // test restricting empty sets
        range1 = VersionRange.createFromVersionSpec("[,1.1],[1.4,]");
        range2 = VersionRange.createFromVersionSpec("[1.2,1.3]");
        range1 = range1.restrict(range2);
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(0, restrictions.size(), CHECK_NUM_RESTRICTIONS);

        range1 = VersionRange.createFromVersionSpec("[,1.1],[1.4,]");
        range2 = VersionRange.createFromVersionSpec("[1.2,1.3]");
        range2 = range1.restrict(range2);
        mergedRange = range1.restrict(range2);
        assertNull(mergedRange.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        restrictions = mergedRange.getRestrictions();
        assertEquals(0, restrictions.size(), CHECK_NUM_RESTRICTIONS);
    }

    @Test
    public void testReleaseRangeBoundsContainsSnapshots() throws InvalidVersionSpecificationException {
        VersionRange range = VersionRange.createFromVersionSpec("[1.0,1.2]");

        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.1-SNAPSHOT")));
        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.2-SNAPSHOT")));
        assertFalse(range.containsVersion(new DefaultArtifactVersion("1.0-SNAPSHOT")));
    }

    @Test
    public void testSnapshotRangeBoundsCanContainSnapshots() throws InvalidVersionSpecificationException {
        VersionRange range = VersionRange.createFromVersionSpec("[1.0,1.2-SNAPSHOT]");

        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.1-SNAPSHOT")));
        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.2-SNAPSHOT")));

        range = VersionRange.createFromVersionSpec("[1.0-SNAPSHOT,1.2]");

        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.0-SNAPSHOT")));
        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.1-SNAPSHOT")));
    }

    @Test
    public void testSnapshotSoftVersionCanContainSnapshot() throws InvalidVersionSpecificationException {
        VersionRange range = VersionRange.createFromVersionSpec("1.0-SNAPSHOT");

        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.0-SNAPSHOT")));
    }

    private void checkInvalidRange(String version) {
        try {
            VersionRange.createFromVersionSpec(version);
            fail("Version " + version + " should have failed to construct");
        } catch (InvalidVersionSpecificationException expected) {
            // expected
        }
    }

    @Test
    public void testContains() throws InvalidVersionSpecificationException {
        ArtifactVersion actualVersion = new DefaultArtifactVersion("2.0.5");
        assertTrue(enforceVersion("2.0.5", actualVersion));
        assertTrue(enforceVersion("2.0.4", actualVersion));
        assertTrue(enforceVersion("[2.0.5]", actualVersion));
        assertFalse(enforceVersion("[2.0.6,)", actualVersion));
        assertFalse(enforceVersion("[2.0.6]", actualVersion));
        assertTrue(enforceVersion("[2.0,2.1]", actualVersion));
        assertFalse(enforceVersion("[2.0,2.0.3]", actualVersion));
        assertTrue(enforceVersion("[2.0,2.0.5]", actualVersion));
        assertFalse(enforceVersion("[2.0,2.0.5)", actualVersion));
    }

    public boolean enforceVersion(String requiredVersionRange, ArtifactVersion actualVersion)
            throws InvalidVersionSpecificationException {
        VersionRange vr = null;

        vr = VersionRange.createFromVersionSpec(requiredVersionRange);

        return vr.containsVersion(actualVersion);
    }

    public void testOrder0() {
        // assertTrue( new DefaultArtifactVersion( "1.0-alpha10" ).compareTo( new DefaultArtifactVersion( "1.0-alpha1" )
        // ) > 0 );
    }

    @Test
    public void testCache() throws InvalidVersionSpecificationException {
        VersionRange range = VersionRange.createFromVersionSpec("[1.0,1.2]");
        assertSame(range, VersionRange.createFromVersionSpec("[1.0,1.2]")); // same instance from spec cache

        VersionRange spec = VersionRange.createFromVersionSpec("1.0");
        assertSame(spec, VersionRange.createFromVersionSpec("1.0")); // same instance from spec cache
        List<Restriction> restrictions = spec.getRestrictions();
        assertEquals(1, restrictions.size(), CHECK_NUM_RESTRICTIONS);

        VersionRange version = VersionRange.createFromVersion("1.0");
        assertSame(version, VersionRange.createFromVersion("1.0")); // same instance from version cache
        restrictions = version.getRestrictions();
        assertEquals(0, restrictions.size(), CHECK_NUM_RESTRICTIONS);

        assertFalse(
                spec.equals(version),
                "check !VersionRange.createFromVersionSpec(x).equals(VersionRange.createFromVersion(x))");
    }
}
