chromium/third_party/mockito/local/src/main/java/org/mockito/internal/junit/ExceptionFactory.java

/*
 * Copyright (c) 2007 Mockito contributors
 * This program is made available under the terms of the MIT License.
 */
package org.mockito.internal.junit;

import org.mockito.exceptions.verification.ArgumentsAreDifferent;

public class ExceptionFactory {
    private ExceptionFactory() {}

    private static interface ExceptionFactoryImpl {
        AssertionError create(String message, String wanted, String actual);
    }

    private static final ExceptionFactoryImpl factory;

    static {
        ExceptionFactoryImpl theFactory = null;
        try {
            Class.forName("junit.framework.ComparisonFailure");
            theFactory = org.mockito.exceptions.verification.junit.ArgumentsAreDifferent::new;
        } catch (ClassNotFoundException onlyIfJUnitIsNotAvailable) {
        }
        factory = (theFactory == null) ? ArgumentsAreDifferent::new : theFactory;
    }

    /**
     * Returns an AssertionError that describes the fact that the arguments of an invocation are
     * different. If {@link org.opentest4j.AssertionFailedError} is on the class path (used by JUnit
     * 5 and others), it returns a class that extends it. Otherwise, if {@link
     * junit.framework.ComparisonFailure} is on the class path (shipped with JUnit 4), it will
     * return a class that extends that. This provides better IDE support as the comparison result
     * can be opened in a visual diff. If neither are available, it returns an instance of
     * {@link org.mockito.exceptions.verification.ArgumentsAreDifferent}.
     */
    public static AssertionError createArgumentsAreDifferentException(
            String message, String wanted, String actual) {
        return factory.create(message, wanted, actual);
    }
}