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A testing framework for the JVM

There is a newer version: 7.10.1

package org.testng.internal;

import org.testng.IInvokedMethod;
import org.testng.ITestContext;
import org.testng.ITestNGMethod;
import org.testng.ITestResult;

import java.util.Set;

/**
 * A utility class that houses mechanisms to retrieve exception information.
 */
final class ExceptionUtils {
    private ExceptionUtils() {
        //Utility class. Defeat instantiation.
    }

    static Throwable getExceptionDetails(ITestContext context, Object instance) {
        Set configResults = context.getFailedConfigurations().getAllResults();
        if (configResults.isEmpty()) {
            configResults = context.getSkippedConfigurations().getAllResults();
        }
        if (configResults.isEmpty()) {
            //if we are here it means we have a test method skip due to a @BeforeSuite failure in a different  maybe
            //So we will have to find out that first failure/skip and get its throwable and pack that information into our
            //current test method's test result.
            return getConfigFailureException(context);
        }
        for (ITestResult configResult : configResults) {
            if (sameInstance(configResult, instance)) {
                return configResult.getThrowable();
            }
        }
        //If we are here it perhaps means that the test method is being skipped because there was a configuration
        //failure in a different class due to @BeforeGroups being used.
        //So lets just find the first exception information and then just pack it in.
        return configResults.iterator().next().getThrowable();
    }

    private static boolean sameInstance(ITestResult configResult, Object instance) {
        return instance.equals(configResult.getInstance());
    }

    private static Throwable getConfigFailureException(ITestContext context) {
        for (IInvokedMethod method : context.getSuite().getAllInvokedMethods()) {
            ITestNGMethod m = method.getTestMethod();
            if (m.isBeforeSuiteConfiguration() && (!method.getTestResult().isSuccess())) {
                return method.getTestResult().getThrowable();
            }
        }
        return null;
    }

}