tests/org.eclipse.compare.tests/src/org/eclipse/compare/tests/LineReaderTest.java

/*******************************************************************************
 * Copyright (c) 2005, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.compare.tests;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;

import org.eclipse.compare.internal.core.patch.LineReader;

import junit.framework.Assert;
import junit.framework.TestCase;

public class LineReaderTest extends TestCase {

	public void testReadEmpty() {
		LineReader lr= new LineReader(getReader("empty.txt")); //$NON-NLS-1$
		List inLines= lr.readLines();
		Assert.assertEquals(0, inLines.size());
	}

	public void testReadNormal() {
		LineReader lr= new LineReader(getReader("normal.txt")); //$NON-NLS-1$
		List inLines= lr.readLines();
		Assert.assertEquals(3, inLines.size());
		Assert.assertEquals("[1]\n", convertLineDelimeters(inLines.get(0))); //$NON-NLS-1$
		Assert.assertEquals("[2]\n", convertLineDelimeters(inLines.get(1))); //$NON-NLS-1$
		Assert.assertEquals("[3]\n", convertLineDelimeters(inLines.get(2))); //$NON-NLS-1$
	}

	private String convertLineDelimeters(Object object) {
		String line = (String)object;
		if (line.endsWith("\r\n"))
			return line.substring(0, line.length() - 2) + "\n";
		return line;
	}

	public void testReadUnterminatedLastLine() {
		LineReader lr= new LineReader(getReader("unterminated.txt")); //$NON-NLS-1$
		List inLines= lr.readLines();
		Assert.assertEquals(3, inLines.size());
		Assert.assertEquals("[1]\n", convertLineDelimeters(inLines.get(0))); //$NON-NLS-1$
		Assert.assertEquals("[2]\n", convertLineDelimeters(inLines.get(1))); //$NON-NLS-1$
		Assert.assertEquals("[3]", inLines.get(2)); //$NON-NLS-1$
	}

	private BufferedReader getReader(String name) {
		InputStream resourceAsStream= getClass().getResourceAsStream("linereaderdata/" + name); //$NON-NLS-1$
		InputStreamReader reader2= new InputStreamReader(resourceAsStream);
		return new BufferedReader(reader2);
	}
}