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Approval is a Java library which will make you look at your testing from a whole different angle

There is a newer version: 0.3

package com.nikolavp.approval;

/*
 * #%L
 * approval
 * %%
 * Copyright (C) 2014 Nikolavp
 * %%
 * 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%
 */

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.nio.file.Path;

/**
 * An interface representing objects that will return an appropriate path for the approval process. Most of the times
 * those are used because you don't want to repeat yourself with the same parent path in {@link
 * com.nikolavp.approval.Approval#verify(Object, java.nio.file.Path)} for the path argument. This will map your approval
 * results file from the value for approval and a possible sub path.
 *
 * @param  the value that will be approved
 *
 * @see com.nikolavp.approval.pathmappers.ParentPathMapper
 */
public interface PathMapper {
    /**
     * Gets the path for the approval result based on the value that we want to approve and a sub path for that.
     *
     * @param value            the value that will be approved
     * @param approvalFilePath a name/subpath for the approval. This will be the path that was passed to {@link
     *                         Approval#verify(Object, java.nio.file.Path)}
     * @return the full path for the approval result
     */
    @Nonnull
    Path getPath(@Nullable T value, Path approvalFilePath);

}