net.sourceforge.phpeclipse.xdebug.test/src/net/sourceforge/phpeclipse/xdebug/core/Base64Test.java

   1 package net.sourceforge.phpeclipse.xdebug.core;
   2
   3 import java.io.ByteArrayInputStream;
   4 import java.io.ByteArrayOutputStream;
   5 import java.io.OutputStream;
   6 import java.util.Arrays;
   7 import java.util.Random;
   8
   9 import junit.framework.TestCase;
  10
  11 public class Base64Test extends TestCase {
  12         private static final long SEED = 12345678;
  13         private static Random s_random = new Random(SEED);
  14
  15         private byte[] createData(int length) throws Exception {
  16                 byte[] bytes = new byte[length];
  17                 s_random.nextBytes(bytes);
  18                 return bytes;
  19         }
  20
  21         private void runStreamTest(int length) throws Exception {
  22                 byte[] data = createData(length);
  23                 ByteArrayOutputStream out_bytes = new ByteArrayOutputStream();
  24                 OutputStream out = new Base64.OutputStream(out_bytes);
  25                 out.write(data);
  26                 out.close();
  27                 byte[] encoded = out_bytes.toByteArray();
  28                 byte[] decoded = Base64.decode(encoded, 0, encoded.length);
  29                 assertTrue(Arrays.equals(data, decoded));
  30
  31                 Base64.InputStream in = new Base64.InputStream(
  32                                 new ByteArrayInputStream(encoded));
  33                 out_bytes = new ByteArrayOutputStream();
  34                 byte[] buffer = new byte[3];
  35                 for (int n = in.read(buffer); n > 0; n = in.read(buffer)) {
  36                         out_bytes.write(buffer, 0, n);
  37                 }
  38                 out_bytes.close();
  39                 in.close();
  40                 decoded = out_bytes.toByteArray();
  41                 assertTrue(Arrays.equals(data, decoded));
  42         }
  43
  44         public void testStreams() throws Exception {
  45                 for (int i = 0; i < 100; ++i) {
  46                         runStreamTest(i);
  47                 }
  48                 for (int i = 100; i < 2000; i += 250) {
  49                         runStreamTest(i);
  50                 }
  51                 for (int i = 2000; i < 80000; i += 1000) {
  52                         runStreamTest(i);
  53                 }
  54         }
  55 }