/*
 * 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.facebook.presto.testng.services;

import org.testng.ITestNGListener;

import static java.lang.String.format;

final class Listeners
{
    private Listeners() {}

    /**
     * Print error to standard error and exit JVM.
     *
     * @apiNote A TestNG listener cannot throw an exception, as this are not currently properly handled by TestNG.
     */
    public static void reportListenerFailure(Class<? extends ITestNGListener> listenerClass, String format, Object... args)
    {
        System.err.println(format("FATAL: %s: ", listenerClass.getName()) + format(format, args));
        System.err.println("JVM will be terminated");

        // TestNG may or may not propagate listener's exception as test execution exception.
        // Therefore, instead of throwing, we terminate the JVM.
        System.exit(1);
    }
}
