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Viewing changes to src/test/java/org/apache/james/mime4j/io/BufferedLineReaderInputStreamTest.java

  • Committer: Bazaar Package Importer
  • Author(s): David Paleino
  • Date: 2010-07-13 09:28:28 UTC
  • Revision ID: james.westby@ubuntu.com-20100713092828-g6wafdtidgmtx7su
Tags: upstream-0.6
Import upstream version 0.6

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src/test/java/org/apache/james/mime4j/io/BufferedLineReaderInputStreamTest.java
 
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/****************************************************************
 
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 * Licensed to the Apache Software Foundation (ASF) under one   *
 
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 * or more contributor license agreements.  See the NOTICE file *
 
4
 * distributed with this work for additional information        *
 
5
 * regarding copyright ownership.  The ASF licenses this file   *
 
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 * to you under the Apache License, Version 2.0 (the            *
 
7
 * "License"); you may not use this file except in compliance   *
 
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 * with the License.  You may obtain a copy of the License at   *
 
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 *                                                              *
 
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 *   http://www.apache.org/licenses/LICENSE-2.0                 *
 
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 *                                                              *
 
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 * Unless required by applicable law or agreed to in writing,   *
 
13
 * software distributed under the License is distributed on an  *
 
14
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 
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 * KIND, either express or implied.  See the License for the    *
 
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 * specific language governing permissions and limitations      *
 
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 * under the License.                                           *
 
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 ****************************************************************/
 
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package org.apache.james.mime4j.io;
 
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import org.apache.james.mime4j.io.BufferedLineReaderInputStream;
 
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import org.apache.james.mime4j.io.LineReaderInputStream;
 
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import org.apache.james.mime4j.io.MaxLineLimitException;
 
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import org.apache.james.mime4j.util.ByteArrayBuffer;
 
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import java.io.ByteArrayInputStream;
 
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import java.io.ByteArrayOutputStream;
 
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import junit.framework.TestCase;
 
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public class BufferedLineReaderInputStreamTest extends TestCase {
 
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    public void testBasicOperations() throws Exception {
 
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        String text = "ah blahblah";
 
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        byte[] b1 = text.getBytes("US-ASCII");
 
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        BufferedLineReaderInputStream instream = new BufferedLineReaderInputStream(new ByteArrayInputStream(b1), 4096);
 
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        assertEquals((byte)'a', instream.read());
 
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        assertEquals((byte)'h', instream.read());
 
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        assertEquals((byte)' ', instream.read());
 
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        byte[] tmp1 = new byte[4];
 
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        assertEquals(4, instream.read(tmp1));
 
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        assertEquals(4, instream.read(tmp1));
 
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        assertEquals(-1, instream.read(tmp1));
 
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        assertEquals(-1, instream.read(tmp1));
 
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        assertEquals(-1, instream.read());
 
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        assertEquals(-1, instream.read());
 
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    }
 
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    public void testBasicReadLine() throws Exception {
 
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        String[] teststrs = new String[5];
 
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        teststrs[0] = "Hello\r\n";
 
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        teststrs[1] = "This string should be much longer than the size of the input buffer " +
 
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                "which is only 16 bytes for this test\r\n";
 
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        StringBuilder sb = new StringBuilder();
 
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        for (int i = 0; i < 15; i++) {
 
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            sb.append("123456789 ");
 
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        }
 
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        sb.append("and stuff like that\r\n");
 
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        teststrs[2] = sb.toString();
 
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        teststrs[3] = "\r\n";
 
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        teststrs[4] = "And goodbye\r\n";
 
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        ByteArrayOutputStream outstream = new ByteArrayOutputStream();
 
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        for (String teststr : teststrs) {
 
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            outstream.write(teststr.getBytes("US-ASCII"));
 
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        }
 
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        byte[] raw = outstream.toByteArray();
 
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        BufferedLineReaderInputStream instream = new BufferedLineReaderInputStream(new ByteArrayInputStream(raw), 16); 
 
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        ByteArrayBuffer linebuf = new ByteArrayBuffer(8); 
 
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        for (String teststr : teststrs) {
 
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            linebuf.clear();
 
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            instream.readLine(linebuf);
 
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            String s = new String(linebuf.toByteArray(), "US-ASCII");
 
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            assertEquals(teststr, s);
 
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        }
 
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        assertEquals(-1, instream.readLine(linebuf));
 
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        assertEquals(-1, instream.readLine(linebuf));
 
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    }
 
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    public void testReadEmptyLine() throws Exception {
 
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        String teststr = "\n\n\r\n\r\r\n\n\n\n\n\n";
 
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        byte[] raw = teststr.getBytes("US-ASCII");
 
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        LineReaderInputStream instream = new BufferedLineReaderInputStream(new ByteArrayInputStream(raw), 4); 
 
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        ByteArrayBuffer linebuf = new ByteArrayBuffer(8); 
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        String s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\r\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\r\r\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\n", s);
 
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        linebuf.clear();
 
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        instream.readLine(linebuf);
 
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        s = new String(linebuf.toByteArray(), "US-ASCII");
 
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        assertEquals("\n", s);
 
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        assertEquals(-1, instream.readLine(linebuf));
 
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        assertEquals(-1, instream.readLine(linebuf));
 
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    }
 
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    public void testReadEmptyLineMaxLimit() throws Exception {
 
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        String teststr = "1234567890\r\n";
 
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        byte[] raw = teststr.getBytes("US-ASCII");
 
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        LineReaderInputStream instream1 = new BufferedLineReaderInputStream(
 
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                new ByteArrayInputStream(raw), 1024, 13); 
 
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        ByteArrayBuffer linebuf = new ByteArrayBuffer(8); 
 
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        linebuf.clear();
 
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        instream1.readLine(linebuf);
 
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        LineReaderInputStream instream2 = new BufferedLineReaderInputStream(
 
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                new ByteArrayInputStream(raw), 1024, 12); 
 
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        linebuf.clear();
 
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        try {
 
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            instream2.readLine(linebuf);
 
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            fail("MaxLineLimitException should have been thrown");
 
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        } catch (MaxLineLimitException ex) {
 
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        }
 
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    }
 
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}