/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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
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/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.index.query;

import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.opensearch.search.approximate.ApproximateMatchAllQuery;
import org.opensearch.search.approximate.ApproximateScoreQuery;
import org.opensearch.test.AbstractQueryTestCase;

import java.io.IOException;

import static org.hamcrest.CoreMatchers.instanceOf;

public class MatchAllQueryBuilderTests extends AbstractQueryTestCase<MatchAllQueryBuilder> {

    @Override
    protected MatchAllQueryBuilder doCreateTestQueryBuilder() {
        return new MatchAllQueryBuilder();
    }

    @Override
    protected void doAssertLuceneQuery(MatchAllQueryBuilder queryBuilder, Query query, QueryShardContext context) throws IOException {
        assertThat(query, instanceOf(ApproximateScoreQuery.class));
        ApproximateScoreQuery approxQuery = (ApproximateScoreQuery) query;
        assertThat(approxQuery.getOriginalQuery(), instanceOf(MatchAllDocsQuery.class));
        assertThat(approxQuery.getApproximationQuery(), instanceOf(ApproximateMatchAllQuery.class));
    }

    public void testFromJson() throws IOException {
        String json = """
            {
              "match_all" : {
                "boost" : 1.2
              }
            }""";
        MatchAllQueryBuilder parsed = (MatchAllQueryBuilder) parseQuery(json);
        checkGeneratedJson(json, parsed);
        assertEquals(json, 1.2, parsed.boost(), 0.0001);
    }
}
