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Tests: Add unit test for InternalScriptedMetric
Relates to #22278
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110 changes: 110 additions & 0 deletions
110
...a/org/elasticsearch/search/aggregations/metrics/scripted/InternalScriptedMetricTests.java
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| /* | ||
| * 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 | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
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| package org.elasticsearch.search.aggregations.metrics.scripted; | ||
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| import org.elasticsearch.ElasticsearchException; | ||
| import org.elasticsearch.common.io.stream.Writeable.Reader; | ||
| import org.elasticsearch.common.settings.Settings; | ||
| import org.elasticsearch.env.Environment; | ||
| import org.elasticsearch.script.MockScriptEngine; | ||
| import org.elasticsearch.script.Script; | ||
| import org.elasticsearch.script.ScriptContextRegistry; | ||
| import org.elasticsearch.script.ScriptEngineRegistry; | ||
| import org.elasticsearch.script.ScriptService; | ||
| import org.elasticsearch.script.ScriptSettings; | ||
| import org.elasticsearch.script.ScriptType; | ||
| import org.elasticsearch.search.aggregations.InternalAggregationTestCase; | ||
| import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator; | ||
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| import java.io.IOException; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| public class InternalScriptedMetricTests extends InternalAggregationTestCase<InternalScriptedMetric> { | ||
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| private static final String REDUCE_SCRIPT_NAME = "reduceScript"; | ||
| // randomized only once so that any random test instance has the same value | ||
| private boolean hasReduceScript = randomBoolean(); | ||
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| @Override | ||
| protected InternalScriptedMetric createTestInstance(String name, List<PipelineAggregator> pipelineAggregators, | ||
| Map<String, Object> metaData) { | ||
| Map<String, Object> params = new HashMap<>(); | ||
| if (randomBoolean()) { | ||
| params.put(randomAsciiOfLength(5), randomAsciiOfLength(5)); | ||
| } | ||
| Script reduceScript = null; | ||
| if (hasReduceScript) { | ||
| reduceScript = new Script(ScriptType.INLINE, MockScriptEngine.NAME, REDUCE_SCRIPT_NAME, params); | ||
| } | ||
| return new InternalScriptedMetric(name, randomAsciiOfLength(5), reduceScript, pipelineAggregators, metaData); | ||
| } | ||
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| /** | ||
| * Mock of the script service. The script that is run looks at the | ||
| * "_aggs" parameter visible when executing the script and simply returns the count. | ||
| * This should be equal to the number of input InternalScriptedMetrics that are reduced | ||
| * in total. | ||
| */ | ||
| @Override | ||
| protected ScriptService mockScriptService() { | ||
| Settings settings = Settings.builder() | ||
| .put(Environment.PATH_HOME_SETTING.getKey(), createTempDir()) | ||
| // no file watching, so we don't need a ResourceWatcherService | ||
| .put(ScriptService.SCRIPT_AUTO_RELOAD_ENABLED_SETTING.getKey(), "false") | ||
| .build(); | ||
| // mock script always retuns the size of the input aggs list as result | ||
| @SuppressWarnings("unchecked") | ||
| MockScriptEngine scriptEngine = new MockScriptEngine(MockScriptEngine.NAME, | ||
| Collections.singletonMap(REDUCE_SCRIPT_NAME, script -> { | ||
| return ((List<Object>) script.get("_aggs")).size(); | ||
| })); | ||
| ScriptEngineRegistry scriptEngineRegistry = new ScriptEngineRegistry(Collections.singletonList(scriptEngine)); | ||
| ScriptContextRegistry scriptContextRegistry = new ScriptContextRegistry(Collections.emptyList()); | ||
| ScriptSettings scriptSettings = new ScriptSettings(scriptEngineRegistry, scriptContextRegistry); | ||
| try { | ||
| return new ScriptService(settings, new Environment(settings), null, scriptEngineRegistry, scriptContextRegistry, | ||
| scriptSettings); | ||
| } catch (IOException e) { | ||
| throw new ElasticsearchException(e); | ||
| } | ||
| } | ||
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| @Override | ||
| protected void assertReduced(InternalScriptedMetric reduced, List<InternalScriptedMetric> inputs) { | ||
| InternalScriptedMetric firstAgg = inputs.get(0); | ||
| assertEquals(firstAgg.getName(), reduced.getName()); | ||
| assertEquals(firstAgg.pipelineAggregators(), reduced.pipelineAggregators()); | ||
| assertEquals(firstAgg.getMetaData(), reduced.getMetaData()); | ||
| if (hasReduceScript) { | ||
| assertEquals(inputs.size(), reduced.aggregation()); | ||
| } else { | ||
| assertEquals(inputs.size(), ((List<Object>) reduced.aggregation()).size()); | ||
| } | ||
| } | ||
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| @Override | ||
| protected Reader<InternalScriptedMetric> instanceReader() { | ||
| return InternalScriptedMetric::new; | ||
| } | ||
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| } |