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ethereumj-core/src/test/java/org/ethereum/config/blockchain/ConstantinopleConfigTest.java
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| /* | ||
| * Copyright (c) [2017] [ <ether.camp> ] | ||
| * This file is part of the ethereumJ library. | ||
| * | ||
| * The ethereumJ library is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * The ethereumJ library is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| * | ||
| */ | ||
|
|
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| package org.ethereum.config.blockchain; | ||
|
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| import org.ethereum.config.Constants; | ||
| import org.ethereum.config.ConstantsAdapter; | ||
| import org.ethereum.core.BlockHeader; | ||
| import org.ethereum.util.blockchain.EtherUtil; | ||
| import org.junit.Test; | ||
|
|
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| import java.math.BigInteger; | ||
|
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| import static org.junit.Assert.assertEquals; | ||
| import static org.junit.Assert.assertFalse; | ||
| import static org.junit.Assert.assertTrue; | ||
|
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| @SuppressWarnings("SameParameterValue") | ||
| public class ConstantinopleConfigTest { | ||
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| private static final byte[] FAKE_HASH = {11, 12}; | ||
| private static final ConstantinopleConfig constantinopleConfig = new ConstantinopleConfig(new TestBlockchainConfig()); | ||
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| @Test | ||
| public void testRelatedEip() throws Exception { | ||
| // Byzantium | ||
| assertTrue(constantinopleConfig.eip198()); | ||
| assertTrue(constantinopleConfig.eip206()); | ||
| assertTrue(constantinopleConfig.eip211()); | ||
| assertTrue(constantinopleConfig.eip212()); | ||
| assertTrue(constantinopleConfig.eip213()); | ||
| assertTrue(constantinopleConfig.eip214()); | ||
| assertTrue(constantinopleConfig.eip658()); | ||
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| // Constantinople | ||
| assertTrue(constantinopleConfig.eip145()); | ||
| assertTrue(constantinopleConfig.eip1014()); | ||
| assertTrue(constantinopleConfig.eip1052()); | ||
| assertTrue(constantinopleConfig.eip1283()); | ||
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| ByzantiumConfig byzantiumConfig = new ByzantiumConfig(new TestBlockchainConfig()); | ||
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| // Constantinople eips in Byzantium | ||
| assertFalse(byzantiumConfig.eip145()); | ||
| assertFalse(byzantiumConfig.eip1014()); | ||
| assertFalse(byzantiumConfig.eip1052()); | ||
| assertFalse(byzantiumConfig.eip1283()); | ||
| } | ||
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| @Test | ||
| public void testDifficultyWithoutExplosion() throws Exception { | ||
| BlockHeader parent = new BlockHeaderBuilder(FAKE_HASH, 0L, 1_000_000).build(); | ||
| BlockHeader current = new BlockHeaderBuilder(parent.getHash(), 1L, -1).build(); | ||
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| BigInteger difficulty = constantinopleConfig.calcDifficulty(current, parent); | ||
| assertEquals(BigInteger.valueOf(1_000_976), difficulty); | ||
| } | ||
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| @Test | ||
| public void testDifficultyAdjustedForParentBlockHavingUncles() throws Exception { | ||
| BlockHeader parent = new BlockHeaderBuilder(FAKE_HASH, 0L, 0) | ||
| .withTimestamp(0L) | ||
| .withUncles(new byte[]{1, 2}) | ||
| .build(); | ||
| BlockHeader current = new BlockHeaderBuilder(parent.getHash(), 1L, 0) | ||
| .withTimestamp(9L) | ||
| .build(); | ||
| assertEquals(1, constantinopleConfig.getCalcDifficultyMultiplier(current, parent).intValue()); | ||
| } | ||
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| @Test | ||
| public void testDifficultyWithExplosionShouldBeImpactedByBlockTimestamp() throws Exception { | ||
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| BlockHeader parent = new BlockHeaderBuilder(new byte[]{11, 12}, 2_500_000, 8_388_608) | ||
| .withTimestamp(0) | ||
| .build(); | ||
| BlockHeader current = new BlockHeaderBuilder(parent.getHash(), 2_500_001, 8_388_608) | ||
| .withTimestamp(10 * 60) // 10 minutes later, longer time: lowers difficulty | ||
| .build(); | ||
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| BigInteger difficulty = constantinopleConfig.calcDifficulty(current, parent); | ||
| assertEquals(BigInteger.valueOf(8126464), difficulty); | ||
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| parent = new BlockHeaderBuilder(new byte[]{11, 12}, 2_500_000, 8_388_608) | ||
| .withTimestamp(0) | ||
| .build(); | ||
| current = new BlockHeaderBuilder(parent.getHash(), 2_500_001, 8_388_608) | ||
| .withTimestamp(5) // 5 seconds later, shorter time: higher difficulty | ||
| .build(); | ||
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| difficulty = constantinopleConfig.calcDifficulty(current, parent); | ||
| assertEquals(BigInteger.valueOf(8396800), difficulty); | ||
| } | ||
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| @Test | ||
| public void testDifficultyAboveBlock5MShouldTriggerExplosion() throws Exception { | ||
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| int parentDifficulty = 268_435_456; | ||
| BlockHeader parent = new BlockHeaderBuilder(FAKE_HASH, 6_000_000, parentDifficulty).build(); | ||
| BlockHeader current = new BlockHeaderBuilder(parent.getHash(), 6_000_001, -1).build(); | ||
| int actualDifficulty = constantinopleConfig.calcDifficulty(current, parent).intValue(); | ||
| int differenceWithoutExplosion = actualDifficulty - parentDifficulty; | ||
| assertEquals(262_400, differenceWithoutExplosion); | ||
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| parent = new BlockHeaderBuilder(FAKE_HASH, 7_000_000, parentDifficulty).build(); | ||
| current = new BlockHeaderBuilder(parent.getHash(), 7_000_001, -1).build(); | ||
| actualDifficulty = constantinopleConfig.calcDifficulty(current, parent).intValue(); | ||
| differenceWithoutExplosion = actualDifficulty - parentDifficulty; | ||
| assertEquals(524_288, differenceWithoutExplosion); | ||
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| parent = new BlockHeaderBuilder(FAKE_HASH, 8_000_000, parentDifficulty).build(); | ||
| current = new BlockHeaderBuilder(parent.getHash(), 8_000_001, -1).build(); | ||
| actualDifficulty = constantinopleConfig.calcDifficulty(current, parent).intValue(); | ||
| differenceWithoutExplosion = actualDifficulty - parentDifficulty; | ||
| assertEquals(268_697_600, differenceWithoutExplosion); // Explosion! | ||
| } | ||
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| @Test | ||
| @SuppressWarnings("PointlessArithmeticExpression") | ||
| public void testCalcDifficultyMultiplier() throws Exception { | ||
| // Note; timestamps are in seconds | ||
| assertCalcDifficultyMultiplier(0L, 1L, 2); | ||
| assertCalcDifficultyMultiplier(0L, 5, 2); // 5 seconds | ||
| assertCalcDifficultyMultiplier(0L, 1 * 10, 1); // 10 seconds | ||
| assertCalcDifficultyMultiplier(0L, 2 * 10, -0); // 20 seconds | ||
| assertCalcDifficultyMultiplier(0L, 10 * 10, -9); // 100 seconds | ||
| assertCalcDifficultyMultiplier(0L, 60 * 10, -64); // 10 mins | ||
| assertCalcDifficultyMultiplier(0L, 60 * 12, -78); // 12 mins | ||
| } | ||
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| private void assertCalcDifficultyMultiplier(long parentBlockTimestamp, long curBlockTimestamp, int expectedMultiplier) { | ||
| BlockHeader parent = new BlockHeaderBuilder(FAKE_HASH, 0L, 0) | ||
| .withTimestamp(parentBlockTimestamp) | ||
| .build(); | ||
| BlockHeader current = new BlockHeaderBuilder(parent.getHash(), 1L, 0) | ||
| .withTimestamp(curBlockTimestamp) | ||
| .build(); | ||
| assertEquals(expectedMultiplier, constantinopleConfig.getCalcDifficultyMultiplier(current, parent).intValue()); | ||
| } | ||
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| @Test | ||
| public void testExplosionChanges() throws Exception { | ||
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| BlockHeader beforePauseBlock = new BlockHeaderBuilder(FAKE_HASH, 4_000_000, 0).build(); | ||
| assertEquals(-2, constantinopleConfig.getExplosion(beforePauseBlock, null)); | ||
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| BlockHeader endOfIceAge = new BlockHeaderBuilder(FAKE_HASH, 5_000_000, 0).build(); | ||
| assertEquals(-2, constantinopleConfig.getExplosion(endOfIceAge, null)); | ||
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| BlockHeader startExplodingBlock = new BlockHeaderBuilder(FAKE_HASH, 5_200_000, 0).build(); | ||
| assertEquals(0, constantinopleConfig.getExplosion(startExplodingBlock, null)); | ||
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| startExplodingBlock = new BlockHeaderBuilder(FAKE_HASH, 6_000_000, 0).build(); | ||
| assertEquals(8, constantinopleConfig.getExplosion(startExplodingBlock, null)); | ||
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| startExplodingBlock = new BlockHeaderBuilder(FAKE_HASH, 8_000_000, 0).build(); | ||
| assertEquals(28, constantinopleConfig.getExplosion(startExplodingBlock, null)); | ||
| } | ||
|
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| @Test | ||
| public void testBlockReward() throws Exception { | ||
| ConstantinopleConfig constantinopleConfig2 = new ConstantinopleConfig(new TestBlockchainConfig() { | ||
| @Override | ||
| public Constants getConstants() { | ||
| return new ConstantsAdapter(super.getConstants()) { | ||
| @Override | ||
| public BigInteger getBLOCK_REWARD() { | ||
| // Make sure ConstantinopleConfig is not using parent's block reward | ||
| return BigInteger.TEN; | ||
| } | ||
| }; | ||
| } | ||
| }); | ||
| assertEquals(EtherUtil.convert(2, EtherUtil.Unit.ETHER), constantinopleConfig2.getConstants().getBLOCK_REWARD()); | ||
| } | ||
| } |
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