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A library for unit-tests to check the dependencies between classes.

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package de.spricom.dessert.util;

/*-
 * #%L
 * Dessert Dependency Assertion Library for Java
 * %%
 * Copyright (C) 2017 - 2023 Hans Jörg Heßmann
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
/**
 * A tuple of two objects of the same type.
 *
 * @param  the type of the objects
 */
public class Pair {

    private final T left;
    private final T right;

    /**
     * Create the tuple.
     *
     * @param left the 1st element of the tuple
     * @param right the 2nd element of the tuple
     */
    public Pair(T left, T right) {
        this.left = left;
        this.right = right;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Pair pair = (Pair) o;

        if (left != null ? !left.equals(pair.left) : pair.left != null) return false;
        return right != null ? right.equals(pair.right) : pair.right == null;
    }

    @Override
    public int hashCode() {
        int result = left != null ? left.hashCode() : 0;
        result = 31 * result + (right != null ? right.hashCode() : 0);
        return result;
    }

    @Override
    public String toString() {
        return "Pair{" +
                "left=" + left +
                ", right=" + right +
                '}';
    }

    public T getLeft() {
        return left;
    }

    public T getRight() {
        return right;
    }
}