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/*
* Copyright 2017, OpenCensus Authors
*
* Licensed 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.
*/
package io.opencensus.stats;
import static com.google.common.truth.Truth.assertThat;
import com.google.common.testing.EqualsTester;
import io.opencensus.common.Functions;
import io.opencensus.stats.Aggregation.Count;
import io.opencensus.stats.Aggregation.Distribution;
import io.opencensus.stats.Aggregation.LastValue;
import io.opencensus.stats.Aggregation.Mean;
import io.opencensus.stats.Aggregation.Sum;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link io.opencensus.stats.Aggregation}. */
@RunWith(JUnit4.class)
public class AggregationTest {
@Rule public ExpectedException thrown = ExpectedException.none();
@Test
public void testCreateDistribution() {
BucketBoundaries bucketBoundaries = BucketBoundaries.create(Arrays.asList(0.1, 2.2, 33.3));
Distribution distribution = Distribution.create(bucketBoundaries);
assertThat(distribution.getBucketBoundaries()).isEqualTo(bucketBoundaries);
}
@Test
public void testNullBucketBoundaries() {
thrown.expect(NullPointerException.class);
thrown.expectMessage("bucketBoundaries");
Distribution.create(null);
}
@Test
public void testEquals() {
new EqualsTester()
.addEqualityGroup(Sum.create(), Sum.create())
.addEqualityGroup(Count.create(), Count.create())
.addEqualityGroup(
Distribution.create(BucketBoundaries.create(Arrays.asList(-10.0, 1.0, 5.0))),
Distribution.create(BucketBoundaries.create(Arrays.asList(-10.0, 1.0, 5.0))))
.addEqualityGroup(
Distribution.create(BucketBoundaries.create(Arrays.asList(0.0, 1.0, 5.0))),
Distribution.create(BucketBoundaries.create(Arrays.asList(0.0, 1.0, 5.0))))
.addEqualityGroup(Mean.create(), Mean.create())
.addEqualityGroup(LastValue.create(), LastValue.create())
.testEquals();
}
@Test
public void testMatch() {
List<Aggregation> aggregations =
Arrays.asList(
Sum.create(),
Count.create(),
Mean.create(),
Distribution.create(BucketBoundaries.create(Arrays.asList(-10.0, 1.0, 5.0))),
LastValue.create());
List<String> actual = new ArrayList<String>();
for (Aggregation aggregation : aggregations) {
actual.add(
aggregation.match(
Functions.returnConstant("SUM"),
Functions.returnConstant("COUNT"),
Functions.returnConstant("DISTRIBUTION"),
Functions.returnConstant("LASTVALUE"),
Functions.returnConstant("UNKNOWN")));
}
assertThat(actual)
.isEqualTo(Arrays.asList("SUM", "COUNT", "UNKNOWN", "DISTRIBUTION", "LASTVALUE"));
}
}
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