/*--- START test "groupId/artifactId/version" metadata ---*/
    @Test
    void mergeSnapshotWithEmptyList() throws Exception {
        Snapshot snapshot = new Snapshot();
        snapshot.setBuildNumber(3);
        snapshot.setTimestamp("20200710.072412");
        target.getVersioning().setSnapshot(snapshot);
        target.getVersioning().setLastUpdated("20200921071745");
        SnapshotVersion sv = new SnapshotVersion();

            utcDateFormatter.setCalendar(new GregorianCalendar());
            utcDateFormatter.setTimeZone(DEFAULT_SNAPSHOT_TIME_ZONE);

            snapshot = new Snapshot();
            snapshot.setBuildNumber(buildNumber != null ? buildNumber : getBuildNumber(recessive) + 1);
            snapshot.setTimestamp(utcDateFormatter.format(timestamp));

            Versioning versioning = new Versioning();

            try {
                int buildNumber = resolveLatestSnapshotBuildNumber(artifact, localRepository, remoteRepository);

                snapshot.setBuildNumber(buildNumber + 1);
            } catch (RepositoryMetadataResolutionException e) {
                throw new ArtifactDeploymentException(

                        updateSnapshotVersions = true;
                    }
                    if ( s.getBuildNumber() != snapshot.getBuildNumber() )
                    {
                        s.setBuildNumber( snapshot.getBuildNumber() );
                        changed = true;
                    }
                    if ( s.isLocalCopy() != snapshot.isLocalCopy() )
                    {

                if (matcher.matches()) {
                    Snapshot snapshot = new Snapshot();
                    snapshot.setTimestamp(matcher.group(2));
                    try {
                        snapshot.setBuildNumber(Integer.parseInt(matcher.group(3)));
                        artifact.addMetadata(new SnapshotArtifactRepositoryMetadata(artifact, snapshot));
                    } catch (NumberFormatException e) {