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      1 // Protocol Buffers - Google's data interchange format
      2 // Copyright 2008 Google Inc.  All rights reserved.
      3 // https://developers.google.com/protocol-buffers/
      4 //
      5 // Redistribution and use in source and binary forms, with or without
      6 // modification, are permitted provided that the following conditions are
      7 // met:
      8 //
      9 //     * Redistributions of source code must retain the above copyright
     10 // notice, this list of conditions and the following disclaimer.
     11 //     * Redistributions in binary form must reproduce the above
     12 // copyright notice, this list of conditions and the following disclaimer
     13 // in the documentation and/or other materials provided with the
     14 // distribution.
     15 //     * Neither the name of Google Inc. nor the names of its
     16 // contributors may be used to endorse or promote products derived from
     17 // this software without specific prior written permission.
     18 //
     19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30 
     31 package com.google.protobuf;
     32 
     33 import java.io.ByteArrayInputStream;
     34 import java.io.ByteArrayOutputStream;
     35 import java.io.InputStream;
     36 import java.io.ObjectInputStream;
     37 import java.io.ObjectOutputStream;
     38 import java.io.UnsupportedEncodingException;
     39 
     40 /**
     41  * This class tests {@link BoundedByteString}, which extends {@link LiteralByteString},
     42  * by inheriting the tests from {@link LiteralByteStringTest}.  The only method which
     43  * is strange enough that it needs to be overridden here is {@link #testToString()}.
     44  *
     45  * @author carlanton (at) google.com (Carl Haverl)
     46  */
     47 public class BoundedByteStringTest extends LiteralByteStringTest {
     48 
     49   @Override
     50   protected void setUp() throws Exception {
     51     classUnderTest = "BoundedByteString";
     52     byte[] sourceBytes = ByteStringTest.getTestBytes(2341, 11337766L);
     53     int from = 100;
     54     int to = sourceBytes.length - 100;
     55     stringUnderTest = ByteString.copyFrom(sourceBytes).substring(from, to);
     56     referenceBytes = new byte[to - from];
     57     System.arraycopy(sourceBytes, from, referenceBytes, 0, to - from);
     58     expectedHashCode = 727575887;
     59   }
     60 
     61   @Override
     62   public void testToString() throws UnsupportedEncodingException {
     63     String testString = "I love unicode \u1234\u5678 characters";
     64     ByteString unicode = ByteString.wrap(testString.getBytes(Internal.UTF_8));
     65     ByteString chopped = unicode.substring(2, unicode.size() - 6);
     66     assertEquals(classUnderTest + ".substring() must have the expected type",
     67         classUnderTest, getActualClassName(chopped));
     68 
     69     String roundTripString = chopped.toString(UTF_8);
     70     assertEquals(classUnderTest + " unicode bytes must match",
     71         testString.substring(2, testString.length() - 6), roundTripString);
     72   }
     73 
     74   @Override
     75   public void testCharsetToString() {
     76     String testString = "I love unicode \u1234\u5678 characters";
     77     ByteString unicode = ByteString.wrap(testString.getBytes(Internal.UTF_8));
     78     ByteString chopped = unicode.substring(2, unicode.size() - 6);
     79     assertEquals(classUnderTest + ".substring() must have the expected type",
     80         classUnderTest, getActualClassName(chopped));
     81 
     82     String roundTripString = chopped.toString(Internal.UTF_8);
     83     assertEquals(classUnderTest + " unicode bytes must match",
     84         testString.substring(2, testString.length() - 6), roundTripString);
     85   }
     86 
     87   @Override
     88   public void testJavaSerialization() throws Exception {
     89     ByteArrayOutputStream out = new ByteArrayOutputStream();
     90     ObjectOutputStream oos = new ObjectOutputStream(out);
     91     oos.writeObject(stringUnderTest);
     92     oos.close();
     93     byte[] pickled = out.toByteArray();
     94     InputStream in = new ByteArrayInputStream(pickled);
     95     ObjectInputStream ois = new ObjectInputStream(in);
     96     Object o = ois.readObject();
     97     assertTrue("Didn't get a ByteString back", o instanceof ByteString);
     98     assertEquals("Should get an equal ByteString back", stringUnderTest, o);
     99   }
    100 }
    101