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

import org.elasticsearch.Version;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.index.mapper.TextFieldMapper;
import org.elasticsearch.test.ESTestCase;

import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
import static org.hamcrest.Matchers.notNullValue;
import static org.hamcrest.Matchers.nullValue;
import static org.hamcrest.Matchers.sameInstance;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class QueryShardContextTests extends ESTestCase {

    public void testFailIfFieldMappingNotFound() {
        IndexMetaData.Builder indexMetadata = new IndexMetaData.Builder("index");
        indexMetadata.settings(Settings.builder().put("index.version.created", Version.CURRENT)
            .put("index.number_of_shards", 1)
            .put("index.number_of_replicas", 1)
        );
        IndexSettings indexSettings = new IndexSettings(indexMetadata.build(), Settings.EMPTY);
        MapperService mapperService = mock(MapperService.class);
        when(mapperService.getIndexSettings()).thenReturn(indexSettings);
        final long nowInMillis = randomNonNegativeLong();
        QueryShardContext context = new QueryShardContext(
            0, indexSettings, null, null, mapperService, null, null, xContentRegistry(), null, null,
            () -> nowInMillis);

        context.setAllowUnmappedFields(false);
        MappedFieldType fieldType = new TextFieldMapper.TextFieldType();
        MappedFieldType result = context.failIfFieldMappingNotFound("name", fieldType);
        assertThat(result, sameInstance(fieldType));
        QueryShardException e = expectThrows(QueryShardException.class, () -> context.failIfFieldMappingNotFound("name", null));
        assertEquals("No field mapping can be found for the field with name [name]", e.getMessage());

        context.setAllowUnmappedFields(true);
        result = context.failIfFieldMappingNotFound("name", fieldType);
        assertThat(result, sameInstance(fieldType));
        result = context.failIfFieldMappingNotFound("name", null);
        assertThat(result, nullValue());

        context.setAllowUnmappedFields(false);
        context.setMapUnmappedFieldAsString(true);
        result = context.failIfFieldMappingNotFound("name", fieldType);
        assertThat(result, sameInstance(fieldType));
        result = context.failIfFieldMappingNotFound("name", null);
        assertThat(result, notNullValue());
        assertThat(result, instanceOf(TextFieldMapper.TextFieldType.class));
        assertThat(result.name(), equalTo("name"));
    }

}