/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.cardinality.impl.hyperloglog.impl;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.RequireAssertEnabled;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class DenseHyperLogLogEncoderTest extends HyperLogLogEncoderAbstractTest {
@Override
public int precision() {
return 14;
}
@Override
public HyperLogLogEncoder createStore() {
return new DenseHyperLogLogEncoder(precision());
}
@Override
public int runLength() {
return 10000000;
}
@RequireAssertEnabled
@Test(expected = AssertionError.class)
public void testAdd_assertRegisterLength() {
DenseHyperLogLogEncoder encoder = new DenseHyperLogLogEncoder(precision(), new byte[0]);
encoder.add(5);
}
@Test
public void testGetMemoryFootprint() {
DenseHyperLogLogEncoder encoder = getDenseHyperLogLogEncoder();
int memoryFootprint = encoder.getMemoryFootprint();
assertEquals(1 << precision(), memoryFootprint);
}
@RequireAssertEnabled
@Test(expected = AssertionError.class)
public void testAlpha_withInvalidMemoryFootprint() {
DenseHyperLogLogEncoder encoder = new DenseHyperLogLogEncoder(1);
encoder.estimate();
}
@Test
public void testAlpha_withMemoryFootprintOf16() {
DenseHyperLogLogEncoder encoder = new DenseHyperLogLogEncoder(4);
encoder.estimate();
}
@Test
public void testAlpha_withMemoryFootprintOf32() {
DenseHyperLogLogEncoder encoder = new DenseHyperLogLogEncoder(5);
encoder.estimate();
}
@Test
public void testAlpha_withMemoryFootprintOf64() {
DenseHyperLogLogEncoder encoder = new DenseHyperLogLogEncoder(6);
encoder.estimate();
}
@Test
public void testAlpha_withMemoryFootprintOf128() {
DenseHyperLogLogEncoder encoder = new DenseHyperLogLogEncoder(7);
encoder.estimate();
}
private DenseHyperLogLogEncoder getDenseHyperLogLogEncoder() {
return (DenseHyperLogLogEncoder) getEncoder();
}
}