MultiSelectionsPolicyHandler.java

package net.bmahe.genetics4j.core.selection;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.commons.lang3.Validate;

import net.bmahe.genetics4j.core.Genotype;
import net.bmahe.genetics4j.core.Population;
import net.bmahe.genetics4j.core.spec.AbstractEAConfiguration;
import net.bmahe.genetics4j.core.spec.AbstractEAExecutionContext;
import net.bmahe.genetics4j.core.spec.selection.MultiSelections;
import net.bmahe.genetics4j.core.spec.selection.SelectionPolicy;

public class MultiSelectionsPolicyHandler<T extends Comparable<T>> implements SelectionPolicyHandler<T> {

	public MultiSelectionsPolicyHandler() {
	}

	@Override
	public boolean canHandle(final SelectionPolicy selectionPolicy) {
		Validate.notNull(selectionPolicy);
		return selectionPolicy instanceof MultiSelections;
	}

	@Override
	public Selector<T> resolve(final AbstractEAExecutionContext<T> eaExecutionContext,
			final AbstractEAConfiguration<T> eaConfiguration,
			final SelectionPolicyHandlerResolver<T> selectionPolicyHandlerResolver,
			final SelectionPolicy selectionPolicy) {
		Validate.notNull(selectionPolicy);
		Validate.isInstanceOf(MultiSelections.class, selectionPolicy);

		final MultiSelections multiSelections = (MultiSelections) selectionPolicy;
		final List<SelectionPolicy> selectionPolicies = multiSelections.selectionPolicies();
		Validate.isTrue(selectionPolicies.isEmpty() == false);

		final List<Selector<T>> selectors = selectionPolicies.stream()
				.map((sp) -> {

					final SelectionPolicyHandler<T> spHandler = selectionPolicyHandlerResolver.resolve(sp);
					return spHandler.resolve(eaExecutionContext, eaConfiguration, selectionPolicyHandlerResolver, sp);
				})
				.collect(Collectors.toList());

		return new Selector<T>() {

			@Override
			public Population<T> select(AbstractEAConfiguration<T> eaConfiguration, int numIndividuals,
					List<Genotype> population, List<T> fitnessScore) {
				final int incrementSelection = numIndividuals / selectors.size();

				final Population<T> selectedIndividuals = new Population<>();
				for (final Selector<T> selector : selectors) {
					selectedIndividuals
							.addAll(selector.select(eaConfiguration, incrementSelection, population, fitnessScore));
				}

				int i = 0;
				while (selectedIndividuals.size() < numIndividuals) {

					selectedIndividuals.addAll(selectors.get(i)
							.select(eaConfiguration, incrementSelection, population, fitnessScore));

					i = (i + 1) % selectors.size();
				}

				return selectedIndividuals;
			}
		};
	}
}



















Active mutators

CONDITIONALS_BOUNDARY
CONSTRUCTOR_CALLS
EMPTY_RETURNS
EXPERIMENTAL_ARGUMENT_PROPAGATION
EXPERIMENTAL_BIG_DECIMAL
EXPERIMENTAL_BIG_INTEGER
EXPERIMENTAL_MEMBER_VARIABLE
EXPERIMENTAL_NAKED_RECEIVER
EXPERIMENTAL_REMOVE_SWITCH_MUTATOR_[0-99]
EXPERIMENTAL_SWITCH
FALSE_RETURNS
INCREMENTS
INLINE_CONSTS
INVERT_NEGS
MATH
NEGATE_CONDITIONALS
NON_VOID_METHOD_CALLS
NULL_RETURNS
PRIMITIVE_RETURNS
REMOVE_CONDITIONALS_EQUAL_ELSE
REMOVE_CONDITIONALS_EQUAL_IF
REMOVE_CONDITIONALS_ORDER_ELSE
REMOVE_CONDITIONALS_ORDER_IF
REMOVE_INCREMENTS
TRUE_RETURNS
VOID_METHOD_CALLS

Tests examined

Report generated by PIT 1.19.6

1		package net.bmahe.genetics4j.core.selection;
2
3		import java.util.List;
4		import java.util.stream.Collectors;
5
6		import org.apache.commons.lang3.Validate;
7
8		import net.bmahe.genetics4j.core.Genotype;
9		import net.bmahe.genetics4j.core.Population;
10		import net.bmahe.genetics4j.core.spec.AbstractEAConfiguration;
11		import net.bmahe.genetics4j.core.spec.AbstractEAExecutionContext;
12		import net.bmahe.genetics4j.core.spec.selection.MultiSelections;
13		import net.bmahe.genetics4j.core.spec.selection.SelectionPolicy;
14
15		public class MultiSelectionsPolicyHandler<T extends Comparable<T>> implements SelectionPolicyHandler<T> {
16
17		public MultiSelectionsPolicyHandler() {
18		}
19
20		@Override
21		public boolean canHandle(final SelectionPolicy selectionPolicy) {
22		Validate.notNull(selectionPolicy);
23	2 1. canHandle : replaced boolean return with false for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::canHandle → NO_COVERAGE 2. canHandle : replaced boolean return with true for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::canHandle → NO_COVERAGE	return selectionPolicy instanceof MultiSelections;
24		}
25
26		@Override
27		public Selector<T> resolve(final AbstractEAExecutionContext<T> eaExecutionContext,
28		final AbstractEAConfiguration<T> eaConfiguration,
29		final SelectionPolicyHandlerResolver<T> selectionPolicyHandlerResolver,
30		final SelectionPolicy selectionPolicy) {
31		Validate.notNull(selectionPolicy);
32		Validate.isInstanceOf(MultiSelections.class, selectionPolicy);
33
34		final MultiSelections multiSelections = (MultiSelections) selectionPolicy;
35	1 1. resolve : removed call to net/bmahe/genetics4j/core/spec/selection/MultiSelections::selectionPolicies → NO_COVERAGE	final List<SelectionPolicy> selectionPolicies = multiSelections.selectionPolicies();
36		Validate.isTrue(selectionPolicies.isEmpty() == false);
37
38	1 1. resolve : removed call to java/util/List::stream → NO_COVERAGE	final List<Selector<T>> selectors = selectionPolicies.stream()
39	2 1. resolve : removed call to java/util/stream/Stream::map → NO_COVERAGE 2. resolve : replaced call to java/util/stream/Stream::map with receiver → NO_COVERAGE	.map((sp) -> {
40
41	1 1. lambda$resolve$0 : removed call to net/bmahe/genetics4j/core/selection/SelectionPolicyHandlerResolver::resolve → NO_COVERAGE	final SelectionPolicyHandler<T> spHandler = selectionPolicyHandlerResolver.resolve(sp);
42	2 1. lambda$resolve$0 : removed call to net/bmahe/genetics4j/core/selection/SelectionPolicyHandler::resolve → NO_COVERAGE 2. lambda$resolve$0 : replaced return value with null for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::lambda$resolve$0 → NO_COVERAGE	return spHandler.resolve(eaExecutionContext, eaConfiguration, selectionPolicyHandlerResolver, sp);
43		})
44	2 1. resolve : removed call to java/util/stream/Stream::collect → NO_COVERAGE 2. resolve : removed call to java/util/stream/Collectors::toList → NO_COVERAGE	.collect(Collectors.toList());
45
46	3 1. resolve : replaced return value with null for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::resolve → NO_COVERAGE 2. resolve : removed call to net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler$1::<init> → NO_COVERAGE 3. <init> : Removed assignment to member variable val$selectors → NO_COVERAGE	return new Selector<T>() {
47
48		@Override
49		public Population<T> select(AbstractEAConfiguration<T> eaConfiguration, int numIndividuals,
50		List<Genotype> population, List<T> fitnessScore) {
51	2 1. select : Replaced integer division with multiplication → NO_COVERAGE 2. select : removed call to java/util/List::size → NO_COVERAGE	final int incrementSelection = numIndividuals / selectors.size();
52
53	1 1. select : removed call to net/bmahe/genetics4j/core/Population::<init> → NO_COVERAGE	final Population<T> selectedIndividuals = new Population<>();
54		for (final Selector<T> selector : selectors) {
55		selectedIndividuals
56	2 1. select : removed call to net/bmahe/genetics4j/core/Population::addAll → NO_COVERAGE 2. select : removed call to net/bmahe/genetics4j/core/selection/Selector::select → NO_COVERAGE	.addAll(selector.select(eaConfiguration, incrementSelection, population, fitnessScore));
57		}
58
59	1 1. select : Substituted 0 with 1 → NO_COVERAGE	int i = 0;
60	5 1. select : removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE 2. select : negated conditional → NO_COVERAGE 3. select : changed conditional boundary → NO_COVERAGE 4. select : removed conditional - replaced comparison check with true → NO_COVERAGE 5. select : removed conditional - replaced comparison check with false → NO_COVERAGE	while (selectedIndividuals.size() < numIndividuals) {
61
62	2 1. select : removed call to net/bmahe/genetics4j/core/Population::addAll → NO_COVERAGE 2. select : removed call to java/util/List::get → NO_COVERAGE	selectedIndividuals.addAll(selectors.get(i)
63	1 1. select : removed call to net/bmahe/genetics4j/core/selection/Selector::select → NO_COVERAGE	.select(eaConfiguration, incrementSelection, population, fitnessScore));
64
65	4 1. select : removed call to java/util/List::size → NO_COVERAGE 2. select : Replaced integer modulus with multiplication → NO_COVERAGE 3. select : Replaced integer addition with subtraction → NO_COVERAGE 4. select : Substituted 1 with 0 → NO_COVERAGE	i = (i + 1) % selectors.size();
66		}
67
68	1 1. select : replaced return value with null for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler$1::select → NO_COVERAGE	return selectedIndividuals;
69		}
70		};
71		}
72		}
		Mutations
23		1.1 Location : canHandle Killed by : none replaced boolean return with false for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::canHandle → NO_COVERAGE 2.2 Location : canHandle Killed by : none replaced boolean return with true for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::canHandle → NO_COVERAGE
35		1.1 Location : resolve Killed by : none removed call to net/bmahe/genetics4j/core/spec/selection/MultiSelections::selectionPolicies → NO_COVERAGE
38		1.1 Location : resolve Killed by : none removed call to java/util/List::stream → NO_COVERAGE
39		1.1 Location : resolve Killed by : none removed call to java/util/stream/Stream::map → NO_COVERAGE 2.2 Location : resolve Killed by : none replaced call to java/util/stream/Stream::map with receiver → NO_COVERAGE
41		1.1 Location : lambda$resolve$0 Killed by : none removed call to net/bmahe/genetics4j/core/selection/SelectionPolicyHandlerResolver::resolve → NO_COVERAGE
42		1.1 Location : lambda$resolve$0 Killed by : none removed call to net/bmahe/genetics4j/core/selection/SelectionPolicyHandler::resolve → NO_COVERAGE 2.2 Location : lambda$resolve$0 Killed by : none replaced return value with null for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::lambda$resolve$0 → NO_COVERAGE
44		1.1 Location : resolve Killed by : none removed call to java/util/stream/Stream::collect → NO_COVERAGE 2.2 Location : resolve Killed by : none removed call to java/util/stream/Collectors::toList → NO_COVERAGE
46		1.1 Location : resolve Killed by : none replaced return value with null for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler::resolve → NO_COVERAGE 2.2 Location : resolve Killed by : none removed call to net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler$1::<init> → NO_COVERAGE 3.3 Location : <init> Killed by : none Removed assignment to member variable val$selectors → NO_COVERAGE
51		1.1 Location : select Killed by : none Replaced integer division with multiplication → NO_COVERAGE 2.2 Location : select Killed by : none removed call to java/util/List::size → NO_COVERAGE
53		1.1 Location : select Killed by : none removed call to net/bmahe/genetics4j/core/Population::<init> → NO_COVERAGE
56		1.1 Location : select Killed by : none removed call to net/bmahe/genetics4j/core/Population::addAll → NO_COVERAGE 2.2 Location : select Killed by : none removed call to net/bmahe/genetics4j/core/selection/Selector::select → NO_COVERAGE
59		1.1 Location : select Killed by : none Substituted 0 with 1 → NO_COVERAGE
60		1.1 Location : select Killed by : none removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE 2.2 Location : select Killed by : none negated conditional → NO_COVERAGE 3.3 Location : select Killed by : none changed conditional boundary → NO_COVERAGE 4.4 Location : select Killed by : none removed conditional - replaced comparison check with true → NO_COVERAGE 5.5 Location : select Killed by : none removed conditional - replaced comparison check with false → NO_COVERAGE
62		1.1 Location : select Killed by : none removed call to net/bmahe/genetics4j/core/Population::addAll → NO_COVERAGE 2.2 Location : select Killed by : none removed call to java/util/List::get → NO_COVERAGE
63		1.1 Location : select Killed by : none removed call to net/bmahe/genetics4j/core/selection/Selector::select → NO_COVERAGE
65		1.1 Location : select Killed by : none removed call to java/util/List::size → NO_COVERAGE 2.2 Location : select Killed by : none Replaced integer modulus with multiplication → NO_COVERAGE 3.3 Location : select Killed by : none Replaced integer addition with subtraction → NO_COVERAGE 4.4 Location : select Killed by : none Substituted 1 with 0 → NO_COVERAGE
68		1.1 Location : select Killed by : none replaced return value with null for net/bmahe/genetics4j/core/selection/MultiSelectionsPolicyHandler$1::select → NO_COVERAGE

MultiSelectionsPolicyHandler.java

Mutations

Active mutators

Tests examined