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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.storage;
import com.yahoo.vespa.model.content.DistributionBitCalculator;
import com.yahoo.vespa.model.content.cluster.ContentCluster;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class DistributionBitCalculatorTest {
@Test
void testBitCalculator() {
ContentCluster.DistributionMode mode = ContentCluster.DistributionMode.STRICT;
assertEquals(8, DistributionBitCalculator.getDistributionBits(1, mode));
assertEquals(16, DistributionBitCalculator.getDistributionBits(10, mode));
assertEquals(21, DistributionBitCalculator.getDistributionBits(100, mode));
assertEquals(25, DistributionBitCalculator.getDistributionBits(500, mode));
assertEquals(28, DistributionBitCalculator.getDistributionBits(1000, mode));
mode = ContentCluster.DistributionMode.LOOSE;
assertEquals(8, DistributionBitCalculator.getDistributionBits(1, mode));
assertEquals(8, DistributionBitCalculator.getDistributionBits(4, mode));
assertEquals(16, DistributionBitCalculator.getDistributionBits(5, mode));
assertEquals(16, DistributionBitCalculator.getDistributionBits(199, mode));
assertEquals(24, DistributionBitCalculator.getDistributionBits(200, mode));
assertEquals(24, DistributionBitCalculator.getDistributionBits(2500, mode));
mode = ContentCluster.DistributionMode.LEGACY;
assertEquals(8, DistributionBitCalculator.getDistributionBits(1, mode));
assertEquals(14, DistributionBitCalculator.getDistributionBits(4, mode));
assertEquals(19, DistributionBitCalculator.getDistributionBits(16, mode));
assertEquals(23, DistributionBitCalculator.getDistributionBits(200, mode));
assertEquals(28, DistributionBitCalculator.getDistributionBits(2500, mode));
}
}
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