rt/emul/compact/src/test/java/org/apidesign/bck2brwsr/tck/ExceptionsTest.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Sat, 28 Sep 2013 02:03:14 +0200
branchjavac
changeset 1313 f08854c7f8b1
permissions -rw-r--r--
Javac uses Throwable printStackTrace method a lot
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/**
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 * Back 2 Browser Bytecode Translator
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 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, version 2 of the License.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program. Look for COPYING file in the top folder.
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 * If not, see http://opensource.org/licenses/GPL-2.0.
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 */
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package org.apidesign.bck2brwsr.tck;
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import java.io.ByteArrayOutputStream;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.io.UnsupportedEncodingException;
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import org.apidesign.bck2brwsr.vmtest.Compare;
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import org.apidesign.bck2brwsr.vmtest.VMTest;
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import org.testng.annotations.Factory;
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/**
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 *
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 * @author Jaroslav Tulach <jtulach@netbeans.org>
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 */
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public class ExceptionsTest {
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    @Compare public String firstLineIsTheSame() throws UnsupportedEncodingException {
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        MyException ex = new MyException("Hello");
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        ByteArrayOutputStream out = new ByteArrayOutputStream();
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        PrintStream ps = new PrintStream(out);
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        ex.printStackTrace(ps);
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        ps.flush();
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        String s = new String(out.toByteArray(), "UTF-8");
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        int newLine = s.indexOf('\n');
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        return s.substring(0, newLine);
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    }
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    @Compare public String firstLineIsTheSameWithWriter() throws UnsupportedEncodingException {
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        MyException ex = new MyException("Hello");
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        StringWriter sw = new StringWriter();
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        PrintWriter pw = new PrintWriter(sw);
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        ex.printStackTrace(pw);
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        pw.flush();
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        String s = sw.toString();
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        int newLine = s.indexOf('\n');
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        return s.substring(0, newLine);
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    }
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    static class MyException extends Exception {
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        public MyException(String message) {
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            super(message);
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        }
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    }
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    @Factory public static Object[] create() {
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        return VMTest.create(ExceptionsTest.class);
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    }
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}