BaseOutputProcessorTestCase.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.process;

import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayInputStream;
import com.liferay.portal.kernel.io.unsync.UnsyncFilterInputStream;

import java.io.IOException;
import java.io.InputStream;

import org.junit.Assert;

/**
 * @author Shuyang Zhou
 */
public abstract class BaseOutputProcessorTestCase {

	public void testFailToRead(OutputProcessor<?, ?> outputProcessor) {
		final IOException ioException = new IOException("Unable to read");

		InputStream inputStream = new UnsyncFilterInputStream(
			new UnsyncByteArrayInputStream(new byte[0])) {

			@Override
			public int read() throws IOException {
				throw ioException;
			}

			@Override
			public int read(byte[] bytes, int offset, int length)
				throws IOException {

				throw ioException;
			}

		};

		try {
			outputProcessor.processStdErr(inputStream);

			Assert.fail();
		}
		catch (ProcessException pe) {
			Assert.assertSame(ioException, pe.getCause());
		}

		try {
			outputProcessor.processStdOut(inputStream);

			Assert.fail();
		}
		catch (ProcessException pe) {
			Assert.assertSame(ioException, pe.getCause());
		}

		inputStream = new UnsyncFilterInputStream(
			new UnsyncByteArrayInputStream(new byte[0])) {

			@Override
			public void close() throws IOException {
				throw ioException;
			}

		};

		try {
			outputProcessor.processStdErr(inputStream);

			Assert.fail();
		}
		catch (ProcessException pe) {
			Assert.assertSame(ioException, pe.getCause());
		}

		try {
			outputProcessor.processStdOut(inputStream);

			Assert.fail();
		}
		catch (ProcessException pe) {
			Assert.assertSame(ioException, pe.getCause());
		}
	}

}