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[yul-phaser] Common: Add wholeChromosomeReplacement() mutation and countDifferences()

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This commit is contained in:
Kamil Śliwak 2020-02-14 20:23:17 +01:00
parent f9f2bdb5f7
commit 643a5f2035
3 changed files with 61 additions and 0 deletions
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15
test/yulPhaser/Common.cpp
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@ -24,6 +24,12 @@
using namespace std;
using namespace solidity;
using namespace solidity::yul;
using namespace solidity::phaser;
function<Mutation> phaser::test::wholeChromosomeReplacement(Chromosome _newChromosome)
{
return [_newChromosome = move(_newChromosome)](Chromosome const&) { return _newChromosome; };
}
vector<size_t> phaser::test::chromosomeLengths(Population const& _population)
{
@ -44,6 +50,15 @@ map<string, size_t> phaser::test::enumerateOptmisationSteps()
return stepIndices;
}
size_t phaser::test::countDifferences(Chromosome const& _chromosome1, Chromosome const& _chromosome2)
{
size_t count = 0;
for (size_t i = 0; i < min(_chromosome1.length(), _chromosome2.length()); ++i)
count += static_cast<int>(_chromosome1.optimisationSteps()[i] != _chromosome2.optimisationSteps()[i]);
return count + abs(static_cast<int>(_chromosome1.length() - _chromosome2.length()));
}
string phaser::test::stripWhitespace(string const& input)
{
regex whitespaceRegex("\\s+");

12
test/yulPhaser/Common.h
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@ -30,9 +30,11 @@
#include <tools/yulPhaser/Chromosome.h>
#include <tools/yulPhaser/FitnessMetrics.h>
#include <tools/yulPhaser/Mutations.h>
#include <tools/yulPhaser/Population.h>
#include <cassert>
#include <functional>
#include <map>
#include <string>
#include <vector>
@ -52,11 +54,21 @@ public:
size_t evaluate(Chromosome const& _chromosome) const override { return _chromosome.length(); }
};
// MUTATIONS
/// Mutation that always replaces the whole chromosome with the one specified in the parameter.
std::function<Mutation> wholeChromosomeReplacement(Chromosome _newChromosome);
// CHROMOSOME AND POPULATION HELPERS
/// Returns a vector containing lengths of all chromosomes in the population (in the same order).
std::vector<size_t> chromosomeLengths(Population const& _population);
/// Returns the number of genes that differ between two chromosomes.
/// If the chromnosomes have different lengths, the positions that are present in only one of them
/// are counted as mismatches.
size_t countDifferences(Chromosome const& _chromosome1, Chromosome const& _chromosome2);
/// Assigns indices from 0 to N to all optimisation steps available in the OptimiserSuite.
/// This is a convenience helper to make it easier to test their distribution with tools made for
/// integers.

34
test/yulPhaser/CommonTest.cpp
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@ -40,6 +40,12 @@ BOOST_AUTO_TEST_CASE(ChromosomeLengthMetric_evaluate_should_return_chromosome_le
BOOST_TEST(ChromosomeLengthMetric{}.evaluate(Chromosome("aaaaa")) == 5);
}
BOOST_AUTO_TEST_CASE(wholeChromosomeReplacement_should_replace_whole_chromosome_with_another)
{
function<Mutation> mutation = wholeChromosomeReplacement(Chromosome("aaa"));
BOOST_TEST(mutation(Chromosome("ccc")) == Chromosome("aaa"));
}
BOOST_AUTO_TEST_CASE(chromosomeLengths_should_return_lengths_of_all_chromosomes_in_a_population)
{
shared_ptr<FitnessMetric> fitnessMetric = make_shared<ChromosomeLengthMetric>();
@ -51,6 +57,34 @@ BOOST_AUTO_TEST_CASE(chromosomeLengths_should_return_lengths_of_all_chromosomes_
BOOST_TEST((chromosomeLengths(population2) == vector<size_t>{}));
}
BOOST_AUTO_TEST_CASE(countDifferences_should_return_zero_for_identical_chromosomes)
{
BOOST_TEST(countDifferences(Chromosome(), Chromosome()) == 0);
BOOST_TEST(countDifferences(Chromosome("a"), Chromosome("a")) == 0);
BOOST_TEST(countDifferences(Chromosome("afxT"), Chromosome("afxT")) == 0);
}
BOOST_AUTO_TEST_CASE(countDifferences_should_count_mismatched_positions_in_chromosomes_of_the_same_length)
{
BOOST_TEST(countDifferences(Chromosome("a"), Chromosome("f")) == 1);
BOOST_TEST(countDifferences(Chromosome("aa"), Chromosome("ac")) == 1);
BOOST_TEST(countDifferences(Chromosome("ac"), Chromosome("cc")) == 1);
BOOST_TEST(countDifferences(Chromosome("aa"), Chromosome("cc")) == 2);
BOOST_TEST(countDifferences(Chromosome("afxT"), Chromosome("Txfa")) == 4);
}
BOOST_AUTO_TEST_CASE(countDifferences_should_count_missing_characters_as_differences)
{
BOOST_TEST(countDifferences(Chromosome(""), Chromosome("a")) == 1);
BOOST_TEST(countDifferences(Chromosome("a"), Chromosome("")) == 1);
BOOST_TEST(countDifferences(Chromosome("aa"), Chromosome("")) == 2);
BOOST_TEST(countDifferences(Chromosome("aaa"), Chromosome("")) == 3);
BOOST_TEST(countDifferences(Chromosome("aa"), Chromosome("aaaa")) == 2);
BOOST_TEST(countDifferences(Chromosome("aa"), Chromosome("aacc")) == 2);
BOOST_TEST(countDifferences(Chromosome("aa"), Chromosome("cccc")) == 4);
}
BOOST_AUTO_TEST_CASE(enumerateOptimisationSteps_should_assing_indices_to_all_available_optimisation_steps)
{
map<string, char> stepsAndAbbreviations = OptimiserSuite::stepNameToAbbreviationMap();