/*
 * 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.eclipse.aether.util.version;

import java.util.Collections;

import org.eclipse.aether.version.InvalidVersionSpecificationException;
import org.eclipse.aether.version.VersionRange;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

public class UnionVersionRangeTest {

    private VersionRange newRange(String range) {
        try {
            return new GenericVersionScheme().parseVersionRange(range);
        } catch (InvalidVersionSpecificationException e) {
            throw new IllegalArgumentException(e);
        }
    }

    private void assertBound(String version, boolean inclusive, VersionRange.Bound bound) {
        if (version == null) {
            assertNull(bound);
        } else {
            assertNotNull(bound);
            assertNotNull(bound.getVersion());
            assertEquals(inclusive, bound.isInclusive());
            try {
                assertEquals(new GenericVersionScheme().parseVersion(version), bound.getVersion());
            } catch (InvalidVersionSpecificationException e) {
                throw new IllegalArgumentException(e);
            }
        }
    }

    @Test
    public void testGetLowerBound() {
        VersionRange range = UnionVersionRange.from(Collections.<VersionRange>emptySet());
        assertBound(null, false, range.getLowerBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("[3,4]"));
        assertBound("1", true, range.getLowerBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("(,4]"));
        assertBound(null, false, range.getLowerBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("(1,4]"));
        assertBound("1", true, range.getLowerBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("(0,4]"));
        assertBound("0", false, range.getLowerBound());
    }

    @Test
    public void testGetUpperBound() {
        VersionRange range = UnionVersionRange.from(Collections.<VersionRange>emptySet());
        assertBound(null, false, range.getUpperBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("[3,4]"));
        assertBound("4", true, range.getUpperBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("[3,)"));
        assertBound(null, false, range.getUpperBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("[1,2)"));
        assertBound("2", true, range.getUpperBound());

        range = UnionVersionRange.from(newRange("[1,2]"), newRange("[1,3)"));
        assertBound("3", false, range.getUpperBound());
    }
}
