CheckedBinaryOperator.java

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/*-
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 * #%L
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 * io.earcam.unexceptional
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 * %%
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 * Copyright (C) 2016 - 2017 earcam
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 * %%
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 * SPDX-License-Identifier: (BSD-3-Clause OR EPL-1.0 OR Apache-2.0 OR MIT)
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 *
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 * You <b>must</b> choose to accept, in full - any individual or combination of
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 * the following licenses:
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 * <ul>
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 * 	<li><a href="https://opensource.org/licenses/BSD-3-Clause">BSD-3-Clause</a></li>
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 * 	<li><a href="https://www.eclipse.org/legal/epl-v10.html">EPL-1.0</a></li>
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 * 	<li><a href="https://www.apache.org/licenses/LICENSE-2.0">Apache-2.0</a></li>
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 * 	<li><a href="https://opensource.org/licenses/MIT">MIT</a></li>
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 * </ul>
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 * #L%
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 */
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package io.earcam.unexceptional;
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import static java.util.Objects.requireNonNull;
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import java.io.Serializable;//NOSONAR stfu false positive (suspect Sonar Squid is looking at bytecode here? as erasure of all but left-most bound where multiple bounds occur, see casts of return types in maxBy/minBy)
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import java.util.Comparator;
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import java.util.Objects;
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/**
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 * A checked parallel of {@link java.util.function.BinaryOperator}
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 *
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 * @param <T> arguments and return type
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 * @param <E> the type of Throwable declared
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 *
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 * @since 0.2.0
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 *
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 * @see java.util.function.BinaryOperator
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 */
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@FunctionalInterface
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public interface CheckedBinaryOperator<T, E extends Throwable> extends CheckedBiFunction<T, T, T, E> {
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	/**
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	 * See {@link java.util.function.BinaryOperator#minBy(Comparator)}
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	 *
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	 * @param <T> arguments and return type
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	 *
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	 * @param comparator the comparator used to determine the minimum.
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	 * @return a {@link CheckedBinaryOperator}
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	 * @throws NullPointerException if {@code comparator} is {@code null}
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	 */
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	@SuppressWarnings("squid:S1905") // SonarQube false positive
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	public static <T, E extends Throwable> CheckedBinaryOperator<T, E> minBy(/* @Nonnull */ CheckedComparator<? super T, E> comparator)
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	{
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		requireNonNull(comparator);
53 4 1. lambda$minBy$64dd3a98$1 : changed conditional boundary → KILLED
2. lambda$minBy$64dd3a98$1 : negated conditional → KILLED
3. lambda$minBy$64dd3a98$1 : mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::lambda$minBy$64dd3a98$1 to ( if (x != null) null else throw new RuntimeException ) → KILLED
4. minBy : mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::minBy to ( if (x != null) null else throw new RuntimeException ) → KILLED
 
		return (CheckedBinaryOperator<T, E> & Serializable) (a, b) -> comparator.compare(a, b) < 0 ? a : b;
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	}
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	/**
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	 * See {@link java.util.function.BinaryOperator#maxBy(Comparator)}
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	 *
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	 * @param <T> arguments and return type
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	 *
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	 * @param comparator the comparator used to determine the maximum.
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	 * @return a {@link CheckedBinaryOperator}
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	 * @throws NullPointerException if {@code comparator} is {@code null}
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	 */
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	@SuppressWarnings("squid:S1905") // SonarQube false positive
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	public static <T, E extends Throwable> CheckedBinaryOperator<T, E> maxBy(/* @Nonnull */ CheckedComparator<? super T, ? extends E> comparator)
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	{
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		Objects.requireNonNull(comparator);
70 4 1. lambda$maxBy$e8f13ff0$1 : changed conditional boundary → KILLED
2. lambda$maxBy$e8f13ff0$1 : negated conditional → KILLED
3. lambda$maxBy$e8f13ff0$1 : mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::lambda$maxBy$e8f13ff0$1 to ( if (x != null) null else throw new RuntimeException ) → KILLED
4. maxBy : mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::maxBy to ( if (x != null) null else throw new RuntimeException ) → KILLED
 
		return (CheckedBinaryOperator<T, E> & Serializable) (a, b) -> comparator.compare(a, b) > 0 ? a : b;
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	}
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}

Mutations

53

1.1
Location : lambda$minBy$64dd3a98$1
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.minByReturnsSecondWhenEqual() changed conditional boundary → KILLED

2.2
Location : lambda$minBy$64dd3a98$1
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.minByReturnsSecondWhenEqual() negated conditional → KILLED

3.3
Location : lambda$minBy$64dd3a98$1
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.minByReturnsSecondWhenEqual() mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::lambda$minBy$64dd3a98$1 to ( if (x != null) null else throw new RuntimeException ) → KILLED

4.4
Location : minBy
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.minByReturnsSecondWhenEqual() mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::minBy to ( if (x != null) null else throw new RuntimeException ) → KILLED
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1.1
Location : lambda$maxBy$e8f13ff0$1
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.maxByReturnsSecondWhenEqual() changed conditional boundary → KILLED

2.2
Location : lambda$maxBy$e8f13ff0$1
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.maxByReturnsSecondWhenEqual() negated conditional → KILLED

3.3
Location : lambda$maxBy$e8f13ff0$1
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.maxByReturnsSecondWhenEqual() mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::lambda$maxBy$e8f13ff0$1 to ( if (x != null) null else throw new RuntimeException ) → KILLED

4.4
Location : maxBy
Killed by : io.earcam.unexceptional.CheckedBinaryOperatorTest.maxByReturnsSecondWhenEqual() mutated return of Object value for io/earcam/unexceptional/CheckedBinaryOperator::maxBy to ( if (x != null) null else throw new RuntimeException ) → KILLED

Active mutators

Tests examined


Report generated by PIT 1.4.0