ASCII85InputStreamTest.java

// Copyright 2001-2009, FreeHEP.
package org.freehep.util.io.test;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;

import org.freehep.util.io.ASCII85InputStream;
import org.freehep.util.io.EncodingException;

/**
 * Test for ASCII85 Input Stream.
 * 
 * @author Mark Donszelmann
 */
public class ASCII85InputStreamTest extends AbstractStreamTest {

	/**
	 * Test method for 'org.freehep.util.io.ASCII85InputStream.read()'
	 * 
	 * @throws Exception
	 *             if ref file cannot be found
	 */
	public void testRead() throws Exception {
		File testFile = new File(testDir, "Quote.a85");
		File refFile = new File(refDir, "Quote.txt");

		ASCII85InputStream in = new ASCII85InputStream(new FileInputStream(
				testFile));
		Assert.assertEquals(new FileInputStream(refFile), in, true, refFile
				.getPath());
	}

	public void testNull1() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("!!~>".getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		int len = in.read(b);
		in.close();
		Assert.assertArrayEquals(new byte[] { 0 }, b, 1);
	}

	public void testNull2() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("!!!~>".getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		int len = in.read(b);
		in.close();
		Assert.assertArrayEquals(new byte[] { 0, 0 }, b, 2);
	}

	public void testNull3() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("!!!!~>"
				.getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		int len = in.read(b);
		in.close();
		Assert.assertArrayEquals(new byte[] { 0, 0, 0 }, b, 3);
	}

	public void testNull4() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("z~>".getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		int len = in.read(b);
		in.close();
		Assert.assertArrayEquals(new byte[] { 0, 0, 0, 0 }, b, 4);
	}

	public void testNull5() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("z!!~>".getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		int len = in.read(b);
		in.close();
		Assert.assertArrayEquals(new byte[] { 0, 0, 0, 0, 0 }, b, 5);
	}

	public void testZincorrect() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("3z89~>"
				.getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		try {
			int len = in.read(b);
		} catch (EncodingException e) {
			// ok
			return;
		} finally {
			in.close();
		}
		throw new AssertionError("EncodingException expected");
	}

	public void testLineBreakInEOD() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("9jqo^Blb~\n>"
				.getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		int len = in.read(b);
		in.close();
		org.junit.Assert.assertEquals("Man is", new String(b, 0, len));
	}

	public void testEOD1() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("389".getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		try {
			int len = in.read(b);
		} catch (EncodingException e) {
			// ok
			return;
		} finally {
			in.close();
		}
		throw new AssertionError("EncodingException expected");
	}

	public void testEOD2() throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream("389~".getBytes());
		ASCII85InputStream in = new ASCII85InputStream(bais);

		byte[] b = new byte[10];
		try {
			int len = in.read(b);
		} catch (EncodingException e) {
			// ok
			return;
		} finally {
			in.close();
		}
		throw new AssertionError("EncodingException expected");
	}
}