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/**
 * Copyright (C) 2014 Dasasian ([email protected])
 *
 * 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.
 */
package com.dasasian.chok.testutil.mockito;

import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;

import java.util.Arrays;

/**
 * Useful to find out who called a given mock method.

 * Usage:

 * doAnswer(new PrintStacktraceAnswer()).when(mock).someMethod(notNull());
 */
public class PrintStacktraceAnswer implements Answer {

    @Override
    public Void answer(InvocationOnMock invocation) throws Throwable {
        System.out.println("called " + invocation.getMethod() + " with arguments " + Arrays.asList(invocation.getArguments()));
        StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
        for (StackTraceElement string : stackTrace) {
            System.out.println("\t" + string.toString());
        }
        return null;
    }

}