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/*******************************************************************************
* Copyright (c) 2010 Boeing.
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.jdk.core.test.text;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.nio.charset.UnsupportedCharsetException;
import java.util.Stack;
import junit.framework.TestCase;
import org.eclipse.osee.framework.jdk.core.text.Rule;
import org.eclipse.osee.framework.jdk.core.text.change.ChangeSet;
import org.eclipse.osee.framework.jdk.core.util.Lib;
import org.junit.Assert;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
/**
* Tests ability to read files in charsets, particularly UTF8
*
* <pre>
* {@link Rule}
* {@link Lib}
* </pre>
*
* @author Karol M. Wilk
*/
public final class UtfReadingRuleTest extends TestCase {
private static final String FILE_INPUT = "utf8_input.xml";
@org.junit.Rule
public TemporaryFolder tempFolder = new TemporaryFolder();
private File getInputFile() throws IOException {
File outfile = tempFolder.newFile("utf8_input_copy.xml");
URL url = UtfReadingRuleTest.class.getResource(FILE_INPUT);
InputStream inputStream = null;
try {
inputStream = new BufferedInputStream(url.openStream());
Lib.inputStreamToFile(inputStream, outfile);
} finally {
Lib.close(inputStream);
}
return outfile;
}
private final Utf8TestRule rule = new Utf8TestRule();
@Test(expected = NullPointerException.class)
public void testWrongFileName() throws IOException {
rule.process(new File("./notexistentFile.txt"));
}
@Test
public void testCharset() {
Stack<String> charsetStack = new Stack<String>();
charsetStack.add("UnknownCharset");
charsetStack.add("UTF-8");
while (!charsetStack.isEmpty()) {
try {
File inputFile = getInputFile();
rule.setCharsetString(charsetStack.pop());
rule.process(inputFile);
} catch (Exception ex) {
Assert.assertTrue("unexpected/wrong exception thrown testCharset(), Exception: " + ex.toString(),
ex instanceof UnsupportedCharsetException || ex instanceof UnsupportedEncodingException);
}
}
}
@Test
public void testUtf8ReadData() throws IOException {
try {
File inputFile = getInputFile();
rule.process(inputFile);
} catch (UnsupportedCharsetException ex) {
Assert.assertTrue(true);
} catch (Exception ex) {
Assert.fail("unexpected/wrong exception thrown testCharset()");
}
//trim off extra data
String expectedUtf8String = Lib.fileToString(getInputFile());
String actual = rule.getLastOutput().toString().trim();
Assert.assertEquals(expectedUtf8String, actual);
}
private static final class Utf8TestRule extends Rule {
private CharSequence lastOutput;
public Utf8TestRule() {
lastOutput = null;
}
@Override
public ChangeSet computeChanges(final CharSequence seq) {
lastOutput = seq;
return new ChangeSet(seq);
}
public CharSequence getLastOutput() {
return lastOutput;
}
}
}
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