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 * 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
 * specific language governing permissions and limitations
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package org.elasticsearch.search;

import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.common.xcontent.json.JsonXContent;
import org.elasticsearch.test.ESTestCase;

import java.io.IOException;
import java.util.Collections;

import static org.elasticsearch.common.xcontent.XContentHelper.toXContent;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertToXContentEquivalent;

public class SearchHitsTests extends ESTestCase {

    public static SearchHits createTestItem() {
        int searchHits = randomIntBetween(0, 5);
        SearchHit[] hits = new SearchHit[searchHits];
        for (int i = 0; i < searchHits; i++) {
            hits[i] = SearchHitTests.createTestItem(false); // creating random innerHits could create loops
        }
        long totalHits = randomLong();
        float maxScore = frequently() ? randomFloat() : Float.NaN;
        return new SearchHits(hits, totalHits, maxScore);
    }

    public void testFromXContent() throws IOException {
        SearchHits searchHits = createTestItem();
        XContentType xcontentType = randomFrom(XContentType.values());
        boolean humanReadable = randomBoolean();
        BytesReference originalBytes = toShuffledXContent(searchHits, xcontentType, ToXContent.EMPTY_PARAMS, humanReadable);
        SearchHits parsed;
        try (XContentParser parser = createParser(xcontentType.xContent(), originalBytes)) {
            parsed = SearchHits.fromXContent(parser);
            assertEquals(XContentParser.Token.END_OBJECT, parser.currentToken());
            assertEquals(XContentParser.Token.END_OBJECT, parser.nextToken());
            assertNull(parser.nextToken());
        }
        assertToXContentEquivalent(originalBytes, toXContent(parsed, xcontentType, humanReadable), xcontentType);
    }

    public void testToXContent() throws IOException {
        SearchHit[] hits = new SearchHit[] {
                new SearchHit(1, "id1", new Text("type"), Collections.emptyMap()),
                new SearchHit(2, "id2", new Text("type"), Collections.emptyMap()) };

        long totalHits = 1000;
        float maxScore = 1.5f;
        SearchHits searchHits = new SearchHits(hits, totalHits, maxScore);
        XContentBuilder builder = JsonXContent.contentBuilder();
        builder.startObject();
        searchHits.toXContent(builder, ToXContent.EMPTY_PARAMS);
        builder.endObject();
        assertEquals("{\"hits\":{\"total\":1000,\"max_score\":1.5," +
                "\"hits\":[{\"_type\":\"type\",\"_id\":\"id1\",\"_score\":\"-Infinity\"},"+
                          "{\"_type\":\"type\",\"_id\":\"id2\",\"_score\":\"-Infinity\"}]}}", builder.string());
    }

}