mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
395 lines
14 KiB
C++
395 lines
14 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <test/yulPhaser/TestHelpers.h>
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#include <tools/yulPhaser/Mutations.h>
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#include <tools/yulPhaser/SimulationRNG.h>
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#include <boost/test/unit_test.hpp>
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#include <algorithm>
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#include <vector>
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using namespace std;
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namespace solidity::phaser::test
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{
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BOOST_AUTO_TEST_SUITE(Phaser)
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BOOST_AUTO_TEST_SUITE(MutationsTest)
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BOOST_AUTO_TEST_SUITE(GeneRandomisationTest)
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BOOST_AUTO_TEST_CASE(geneRandomisation_should_iterate_over_genes_and_replace_them_with_random_ones_with_given_probability)
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{
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Chromosome chromosome("fcCUnDvejs");
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function<Mutation> mutation01 = geneRandomisation(0.1);
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function<Mutation> mutation05 = geneRandomisation(0.5);
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function<Mutation> mutation10 = geneRandomisation(1.0);
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SimulationRNG::reset(1);
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BOOST_TEST(countDifferences(mutation01(chromosome), chromosome), 2);
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BOOST_TEST(countDifferences(mutation05(chromosome), chromosome), 5);
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BOOST_TEST(countDifferences(mutation10(chromosome), chromosome), 7);
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SimulationRNG::reset(2);
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BOOST_TEST(countDifferences(mutation01(chromosome), chromosome), 1);
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BOOST_TEST(countDifferences(mutation05(chromosome), chromosome), 3);
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BOOST_TEST(countDifferences(mutation10(chromosome), chromosome), 9);
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}
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BOOST_AUTO_TEST_CASE(geneRandomisation_should_return_identical_chromosome_if_probability_is_zero)
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{
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Chromosome chromosome("fcCUnDvejsrmV");
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function<Mutation> mutation = geneRandomisation(0.0);
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BOOST_TEST(mutation(chromosome) == chromosome);
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}
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BOOST_AUTO_TEST_CASE(geneDeletion_should_iterate_over_genes_and_delete_them_with_given_probability)
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{
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Chromosome chromosome("fcCUnDvejs");
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function<Mutation> mutation01 = geneDeletion(0.1);
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function<Mutation> mutation05 = geneDeletion(0.5);
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SimulationRNG::reset(1);
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// fcCUnDvejs
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BOOST_TEST(mutation01(chromosome) == Chromosome(stripWhitespace("fcCU Dvejs")));
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BOOST_TEST(mutation05(chromosome) == Chromosome(stripWhitespace(" D ejs")));
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SimulationRNG::reset(2);
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BOOST_TEST(mutation01(chromosome) == Chromosome(stripWhitespace("fcUnDvejs")));
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BOOST_TEST(mutation05(chromosome) == Chromosome(stripWhitespace(" Un s")));
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}
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BOOST_AUTO_TEST_CASE(geneDeletion_should_return_identical_chromosome_if_probability_is_zero)
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{
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Chromosome chromosome("fcCUnDvejsrmV");
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function<Mutation> mutation = geneDeletion(0.0);
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BOOST_TEST(mutation(chromosome) == chromosome);
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}
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BOOST_AUTO_TEST_CASE(geneDeletion_should_delete_all_genes_if_probability_is_one)
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{
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Chromosome chromosome("fcCUnDvejsrmV");
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function<Mutation> mutation = geneDeletion(1.0);
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BOOST_TEST(mutation(chromosome) == Chromosome(""));
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}
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BOOST_AUTO_TEST_CASE(geneAddition_should_iterate_over_gene_positions_and_insert_new_genes_with_given_probability)
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{
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Chromosome chromosome("fcCUnDvejs");
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function<Mutation> mutation01 = geneAddition(0.1);
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function<Mutation> mutation05 = geneAddition(0.5);
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SimulationRNG::reset(1);
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// f c C U n D v e j s
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BOOST_TEST(mutation01(chromosome) == Chromosome(stripWhitespace(" f c C UC n D v e jx s"))); // 20% more
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BOOST_TEST(mutation05(chromosome) == Chromosome(stripWhitespace("j f cu C U ne D v eI j sf"))); // 50% more
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SimulationRNG::reset(2);
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BOOST_TEST(mutation01(chromosome) == Chromosome(stripWhitespace(" f cu C U n D v e j s"))); // 10% more
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BOOST_TEST(mutation05(chromosome) == Chromosome(stripWhitespace("L f ce Cv U n D v e jO s"))); // 40% more
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}
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BOOST_AUTO_TEST_CASE(geneAddition_should_be_able_to_insert_before_first_position)
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{
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SimulationRNG::reset(7);
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Chromosome chromosome("fcCUnDvejs");
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function<Mutation> mutation = geneAddition(0.1);
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Chromosome mutatedChromosome = mutation(chromosome);
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BOOST_TEST(mutatedChromosome.length() > chromosome.length());
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vector<string> suffix(
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mutatedChromosome.optimisationSteps().end() - chromosome.length(),
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mutatedChromosome.optimisationSteps().end()
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);
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BOOST_TEST(suffix == chromosome.optimisationSteps());
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}
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BOOST_AUTO_TEST_CASE(geneAddition_should_be_able_to_insert_after_last_position)
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{
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SimulationRNG::reset(81);
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Chromosome chromosome("fcCUnDvejs");
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function<Mutation> mutation = geneAddition(0.1);
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Chromosome mutatedChromosome = mutation(chromosome);
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BOOST_TEST(mutatedChromosome.length() > chromosome.length());
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vector<string> prefix(
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mutatedChromosome.optimisationSteps().begin(),
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mutatedChromosome.optimisationSteps().begin() + chromosome.length()
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);
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BOOST_TEST(prefix == chromosome.optimisationSteps());
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}
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BOOST_AUTO_TEST_CASE(geneAddition_should_return_identical_chromosome_if_probability_is_zero)
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{
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Chromosome chromosome("fcCUnDvejsrmV");
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function<Mutation> mutation = geneAddition(0.0);
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BOOST_TEST(mutation(chromosome) == chromosome);
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}
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BOOST_AUTO_TEST_CASE(geneAddition_should_insert_genes_at_all_positions_if_probability_is_one)
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{
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Chromosome chromosome("fcCUnDvejsrmV");
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function<Mutation> mutation = geneAddition(1.0);
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Chromosome mutatedChromosome = mutation(chromosome);
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BOOST_TEST(mutatedChromosome.length() == chromosome.length() * 2 + 1);
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vector<string> originalGenes;
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for (size_t i = 0; i < mutatedChromosome.length() - 1; ++i)
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if (i % 2 == 1)
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originalGenes.push_back(mutatedChromosome.optimisationSteps()[i]);
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BOOST_TEST(Chromosome(originalGenes) == chromosome);
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}
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BOOST_AUTO_TEST_CASE(alternativeMutations_should_choose_between_mutations_with_given_probability)
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{
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SimulationRNG::reset(1);
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Chromosome chromosome("a");
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function<Mutation> mutation = alternativeMutations(
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0.8,
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wholeChromosomeReplacement(Chromosome("c")),
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wholeChromosomeReplacement(Chromosome("f"))
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);
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size_t cCount = 0;
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size_t fCount = 0;
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for (size_t i = 0; i < 10; ++i)
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{
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Chromosome mutatedChromosome = mutation(chromosome);
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cCount += static_cast<int>(mutatedChromosome == Chromosome("c"));
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fCount += static_cast<int>(mutatedChromosome == Chromosome("f"));
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}
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// This particular seed results in 7 "c"s out of 10 which looks plausible given the 80% chance.
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BOOST_TEST(cCount == 7);
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BOOST_TEST(fCount == 3);
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}
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BOOST_AUTO_TEST_CASE(alternativeMutations_should_always_choose_first_mutation_if_probability_is_one)
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{
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Chromosome chromosome("a");
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function<Mutation> mutation = alternativeMutations(
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1.0,
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wholeChromosomeReplacement(Chromosome("c")),
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wholeChromosomeReplacement(Chromosome("f"))
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);
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for (size_t i = 0; i < 10; ++i)
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BOOST_TEST(mutation(chromosome) == Chromosome("c"));
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}
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BOOST_AUTO_TEST_CASE(alternativeMutations_should_always_choose_second_mutation_if_probability_is_zero)
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{
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Chromosome chromosome("a");
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function<Mutation> mutation = alternativeMutations(
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0.0,
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wholeChromosomeReplacement(Chromosome("c")),
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wholeChromosomeReplacement(Chromosome("f"))
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);
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for (size_t i = 0; i < 10; ++i)
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BOOST_TEST(mutation(chromosome) == Chromosome("f"));
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}
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BOOST_AUTO_TEST_CASE(randomPointCrossover_should_swap_chromosome_parts_at_random_point)
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{
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function<Crossover> crossover = randomPointCrossover();
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SimulationRNG::reset(1);
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Chromosome result1 = crossover(Chromosome("aaaaaaaaaa"), Chromosome("cccccc"));
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BOOST_TEST(result1 == Chromosome("aaaccc"));
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SimulationRNG::reset(1);
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Chromosome result2 = crossover(Chromosome("cccccc"), Chromosome("aaaaaaaaaa"));
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BOOST_TEST(result2 == Chromosome("cccaaaaaaa"));
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}
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BOOST_AUTO_TEST_CASE(randomPointCrossover_should_only_consider_points_available_on_both_chromosomes)
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{
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SimulationRNG::reset(1);
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function<Crossover> crossover = randomPointCrossover();
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for (size_t i = 0; i < 30; ++i)
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{
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Chromosome result1 = crossover(Chromosome("aaa"), Chromosome("TTTTTTTTTTTTTTTTTTTT"));
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Chromosome result2 = crossover(Chromosome("TTTTTTTTTTTTTTTTTTTT"), Chromosome("aaa"));
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BOOST_TEST((
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result1 == Chromosome("TTTTTTTTTTTTTTTTTTTT") ||
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result1 == Chromosome("aTTTTTTTTTTTTTTTTTTT") ||
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result1 == Chromosome("aaTTTTTTTTTTTTTTTTTT") ||
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result1 == Chromosome("aaaTTTTTTTTTTTTTTTTT")
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));
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BOOST_TEST((
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result2 == Chromosome("aaa") ||
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result2 == Chromosome("Taa") ||
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result2 == Chromosome("TTa") ||
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result2 == Chromosome("TTT")
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));
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}
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}
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BOOST_AUTO_TEST_CASE(randomPointCrossover_should_never_split_at_position_zero_if_chromosomes_are_splittable)
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{
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SimulationRNG::reset(1);
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function<Crossover> crossover = randomPointCrossover();
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for (size_t i = 0; i < 30; ++i)
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{
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Chromosome result1 = crossover(Chromosome("aa"), Chromosome("TTTTTTTTTTTTTTTTTTTT"));
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Chromosome result2 = crossover(Chromosome("TTTTTTTTTTTTTTTTTTTT"), Chromosome("aa"));
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BOOST_TEST(result1 != Chromosome("TTTTTTTTTTTTTTTTTTTT"));
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BOOST_TEST(result2 != Chromosome("aa"));
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}
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}
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BOOST_AUTO_TEST_CASE(randomPointCrossover_should_never_split_at_position_zero_if_chromosomes_are_not_empty)
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{
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SimulationRNG::reset(1);
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function<Crossover> crossover = randomPointCrossover();
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for (size_t i = 0; i < 30; ++i)
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{
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Chromosome result1 = crossover(Chromosome("a"), Chromosome("T"));
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Chromosome result2 = crossover(Chromosome("T"), Chromosome("a"));
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BOOST_TEST(result1 == Chromosome("a"));
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BOOST_TEST(result2 == Chromosome("T"));
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}
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}
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BOOST_AUTO_TEST_CASE(randomPointCrossover_should_work_even_if_one_chromosome_is_unsplittable)
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{
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function<Crossover> crossover = randomPointCrossover();
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SimulationRNG::reset(1);
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BOOST_CHECK(crossover(Chromosome("ff"), Chromosome("a")) == Chromosome("f"));
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BOOST_CHECK(crossover(Chromosome("a"), Chromosome("ff")) == Chromosome("af"));
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}
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BOOST_AUTO_TEST_CASE(randomPointCrossover_should_split_at_position_zero_only_if_at_least_one_chromosome_is_empty)
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{
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Chromosome empty("");
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Chromosome unsplittable("a");
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Chromosome splittable("aaaa");
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function<Crossover> crossover = randomPointCrossover();
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SimulationRNG::reset(1);
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BOOST_CHECK(crossover(empty, empty) == empty);
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BOOST_CHECK(crossover(unsplittable, empty) == empty);
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BOOST_CHECK(crossover(empty, unsplittable) == unsplittable);
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BOOST_CHECK(crossover(splittable, empty) == empty);
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BOOST_CHECK(crossover(empty, splittable) == splittable);
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}
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BOOST_AUTO_TEST_CASE(fixedPointCrossover_should_swap_chromosome_parts_at_given_point)
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{
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Chromosome result1 = fixedPointCrossover(0.8)(Chromosome("aaaaaaaaaa"), Chromosome("cccccccccc"));
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Chromosome result2 = fixedPointCrossover(0.8)(Chromosome("cccccccccc"), Chromosome("aaaaaaaaaa"));
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BOOST_TEST(result1 == Chromosome("aaaaaaaacc"));
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BOOST_TEST(result2 == Chromosome("ccccccccaa"));
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}
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BOOST_AUTO_TEST_CASE(fixedPointCrossover_should_determine_crossover_point_based_on_length_of_shorter_chromosome)
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{
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Chromosome result1 = fixedPointCrossover(0.4)(Chromosome("aaaaa"), Chromosome("cccccccccc"));
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Chromosome result2 = fixedPointCrossover(0.4)(Chromosome("cccccccccc"), Chromosome("aaaaa"));
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BOOST_TEST(result1 == Chromosome("aacccccccc"));
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BOOST_TEST(result2 == Chromosome("ccaaa"));
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}
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BOOST_AUTO_TEST_CASE(fixedPointCrossover_should_round_split_point)
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{
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Chromosome result1 = fixedPointCrossover(0.49)(Chromosome("aaaaa"), Chromosome("ccccc"));
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Chromosome result2 = fixedPointCrossover(0.49)(Chromosome("ccccc"), Chromosome("aaaaa"));
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BOOST_TEST(result1 == Chromosome("aaccc"));
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BOOST_TEST(result2 == Chromosome("ccaaa"));
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Chromosome result3 = fixedPointCrossover(0.50)(Chromosome("aaaaa"), Chromosome("ccccc"));
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Chromosome result4 = fixedPointCrossover(0.50)(Chromosome("ccccc"), Chromosome("aaaaa"));
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BOOST_TEST(result3 == Chromosome("aaacc"));
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BOOST_TEST(result4 == Chromosome("cccaa"));
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Chromosome result5 = fixedPointCrossover(0.51)(Chromosome("aaaaa"), Chromosome("ccccc"));
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Chromosome result6 = fixedPointCrossover(0.51)(Chromosome("ccccc"), Chromosome("aaaaa"));
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BOOST_TEST(result5 == Chromosome("aaacc"));
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BOOST_TEST(result6 == Chromosome("cccaa"));
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}
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BOOST_AUTO_TEST_CASE(fixedPointCrossover_should_split_at_position_zero_if_explicitly_requested)
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{
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Chromosome result1 = fixedPointCrossover(0.0)(Chromosome("aaaaa"), Chromosome("cccccccccc"));
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Chromosome result2 = fixedPointCrossover(0.0)(Chromosome("cccccccccc"), Chromosome("aaaaa"));
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BOOST_TEST(result1 == Chromosome("cccccccccc"));
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BOOST_TEST(result2 == Chromosome("aaaaa"));
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}
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BOOST_AUTO_TEST_CASE(fixedPointCrossover_should_split_at_end_of_shorter_chromosome_if_crossover_point_is_after_last_position)
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{
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Chromosome result1 = fixedPointCrossover(1.0)(Chromosome("aaaaa"), Chromosome("cccccccccc"));
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Chromosome result2 = fixedPointCrossover(1.0)(Chromosome("cccccccccc"), Chromosome("aaaaa"));
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BOOST_TEST(result1 == Chromosome("aaaaaccccc"));
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BOOST_TEST(result2 == Chromosome("ccccc"));
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}
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BOOST_AUTO_TEST_CASE(fixedPointCrossover_should_select_correct_split_point_for_unsplittable_chromosomes)
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{
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function<Crossover> crossover00 = fixedPointCrossover(0.0);
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BOOST_CHECK(crossover00(Chromosome("fff"), Chromosome("a")) == Chromosome("a"));
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BOOST_CHECK(crossover00(Chromosome("a"), Chromosome("fff")) == Chromosome("fff"));
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BOOST_CHECK(crossover00(Chromosome("f"), Chromosome("a")) == Chromosome("a"));
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function<Crossover> crossover10 = fixedPointCrossover(1.0);
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BOOST_CHECK(crossover10(Chromosome("fff"), Chromosome("a")) == Chromosome("f"));
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BOOST_CHECK(crossover10(Chromosome("a"), Chromosome("fff")) == Chromosome("aff"));
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BOOST_CHECK(crossover10(Chromosome("f"), Chromosome("a")) == Chromosome("f"));
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}
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BOOST_AUTO_TEST_CASE(fixedPointCrossover_should_always_use_position_zero_as_split_point_when_chromosome_empty)
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{
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Chromosome empty("");
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Chromosome unsplittable("f");
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Chromosome splittable("aaaa");
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function<Crossover> crossover00 = fixedPointCrossover(0.0);
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BOOST_CHECK(crossover00(empty, empty) == empty);
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BOOST_CHECK(crossover00(unsplittable, empty) == empty);
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BOOST_CHECK(crossover00(empty, unsplittable) == unsplittable);
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BOOST_CHECK(crossover00(splittable, empty) == empty);
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BOOST_CHECK(crossover00(empty, splittable) == splittable);
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function<Crossover> crossover10 = fixedPointCrossover(1.0);
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BOOST_CHECK(crossover10(empty, empty) == empty);
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BOOST_CHECK(crossover10(unsplittable, empty) == empty);
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BOOST_CHECK(crossover10(empty, unsplittable) == unsplittable);
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BOOST_CHECK(crossover10(splittable, empty) == empty);
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BOOST_CHECK(crossover10(empty, splittable) == splittable);
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}
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BOOST_AUTO_TEST_SUITE_END()
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BOOST_AUTO_TEST_SUITE_END()
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BOOST_AUTO_TEST_SUITE_END()
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}
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