/*
 * 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.graph.versions;

import java.util.Iterator;

import org.eclipse.aether.DefaultRepositorySystemSession;
import org.eclipse.aether.artifact.DefaultArtifact;
import org.eclipse.aether.collection.VersionFilter;
import org.eclipse.aether.graph.Dependency;
import org.eclipse.aether.internal.test.util.TestUtils;
import org.eclipse.aether.resolution.VersionRangeRequest;
import org.eclipse.aether.resolution.VersionRangeResult;
import org.eclipse.aether.util.version.GenericVersionScheme;
import org.eclipse.aether.version.InvalidVersionSpecificationException;
import org.eclipse.aether.version.Version;
import org.eclipse.aether.version.VersionScheme;
import org.junit.After;
import org.junit.Before;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public abstract class AbstractVersionFilterTest {

    protected DefaultRepositorySystemSession session;

    @Before
    public void setUp() {
        session = TestUtils.newSession();
    }

    @After
    public void tearDown() {
        session = null;
    }

    protected VersionFilter.VersionFilterContext newContext(String gav, String... versions) {
        VersionRangeRequest request = new VersionRangeRequest();
        request.setArtifact(new DefaultArtifact(gav));
        VersionRangeResult result = new VersionRangeResult(request);
        VersionScheme scheme = new GenericVersionScheme();
        try {
            result.setVersionConstraint(
                    scheme.parseVersionConstraint(request.getArtifact().getVersion()));
            for (String version : versions) {
                result.addVersion(scheme.parseVersion(version));
            }
        } catch (InvalidVersionSpecificationException e) {
            throw new IllegalArgumentException(e);
        }
        return TestUtils.newVersionFilterContext(session, result);
    }

    protected VersionFilter derive(VersionFilter filter, String gav) {
        return filter.deriveChildFilter(
                TestUtils.newCollectionContext(session, new Dependency(new DefaultArtifact(gav), ""), null));
    }

    protected void assertVersions(VersionFilter.VersionFilterContext context, String... versions) {
        assertEquals(versions.length, context.getCount());
        Iterator<Version> it = context.iterator();
        for (String version : versions) {
            assertTrue(it.hasNext());
            assertEquals(version, it.next().toString());
        }
    }
}
