package org.junit.internal.requests;

import java.lang.reflect.InvocationTargetException;

import java.util.Arrays;

import java.util.List;

import org.junit.internal.runners.CompositeRunner;

import org.junit.internal.runners.ErrorReportingRunner;

import org.junit.internal.runners.InitializationError;

import org.junit.runner.Description;

import org.junit.runner.Request;

import org.junit.runner.Runner;

public class ErrorReportingRequest extends Request {

	private final Class<?> fClass;

	private final Throwable fCause;

	public ErrorReportingRequest(Class<?> klass, Throwable cause) {

		fClass= klass;

		fCause= cause;

	}

	@Override

	public Runner getRunner() {

		List<Throwable> goofs= getCauses(fCause);

		CompositeRunner runner= new CompositeRunner(fClass.getName());

		for (int i= 0; i < goofs.size(); i++) {

			final Description description= Description.createTestDescription(fClass, "initializationError" + i);

			final Throwable throwable= goofs.get(i);

			runner.add(new ErrorReportingRunner(description, throwable));

		}

		return runner;

	}

	private List<Throwable> getCauses(Throwable cause) {

		if (cause instanceof InvocationTargetException)

			return getCauses(cause.getCause());

		if (cause instanceof InitializationError)

			return ((InitializationError) cause).getCauses();

		return Arrays.asList(cause);	

	}

}