示例#1
0
  //
  // Verify that intersect() properly handles maps containing extent
  // buffers whose positions and limits are not necessarily equal to (resp.)
  // 0 and their capacities.
  //
  // This test recreates the circumstances of a bug observed while testing
  // the ExtentBufferStreamer class.
  //
  @Test
  public void testIntersectChopped() {
    ByteBuffer b03_06 = ByteBuffer.wrap("def".getBytes());
    ByteBuffer b09_12 = ByteBuffer.wrap("jkl".getBytes());
    ByteBuffer b15_18 = ByteBuffer.wrap("pqr".getBytes());
    ExtentBuffer eb03_06 = new ExtentBuffer(3L, b03_06);
    ExtentBuffer eb09_12 = new ExtentBuffer(9L, b09_12);
    ExtentBuffer eb15_18 = new ExtentBuffer(15L, b15_18);
    ExtentBufferMap fullMap = new ExtentBufferMap();
    fullMap.put(eb03_06);
    fullMap.put(eb09_12);
    fullMap.put(eb15_18);

    //
    // Shorten the middle buffer in the map.
    //
    eb09_12.position(1).limit(2);

    //
    // Intersect fullMap against an extent that will chop up the first
    // contained extent buffer and leave the second two intact.
    //
    ExtentBufferMap choppedMap = fullMap.intersect(new ExtentImpl(4L, 30L));

    ExtentBuffer eb = choppedMap.get(9L);
    assertNotNull("chopped map should still contain the middle extent", eb);
    assertEquals("middle extent should have position 1", eb.position(), 1);
    assertEquals("middle extent should have limit 2", eb.limit(), 2);
  }
示例#2
0
  //
  // Verify that serialization followed by deserialization works properly
  // for a simple (but not completely trivial) map.
  //
  @Test
  public final void testSerialization0() throws IOException, ClassNotFoundException {
    ByteBuffer b00_01 = ByteBuffer.wrap("0".getBytes());
    ByteBuffer b02_04 = ByteBuffer.wrap("23".getBytes());
    ExtentBuffer eb00_01 = new ExtentBuffer(0L, b00_01);
    ExtentBuffer eb02_04 = new ExtentBuffer(2L, b02_04);
    ExtentBufferMap m00_04 = new ExtentBufferMap();
    m00_04.put(eb00_01);
    m00_04.put(eb02_04);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream out = new ObjectOutputStream(baos);
    out.writeObject(m00_04);
    out.flush();
    baos.flush();

    byte[] serialized = baos.toByteArray();
    ByteArrayInputStream bais = new ByteArrayInputStream(serialized);
    ObjectInputStream in = new ObjectInputStream(bais);
    ExtentBufferMap n00_04 = (ExtentBufferMap) in.readObject();

    out.close();
    baos.close();
    in.close();
    bais.close();

    //
    // Some spot checks:  verify that:
    //  -   the map contains an extent buffer containing offset 3
    //  -   the byte at that position has value '3'
    //
    ExtentBuffer fb02_04 = n00_04.getExtent(3L);
    assertNotNull("expect an extent including offset 3", fb02_04);
    int pos = fb02_04.offsetToPosition(3);
    assertEquals("expect correct contents at offset 3", fb02_04.get(pos), (byte) '3');
  }