/**
   * @throws URISyntaxException
   * @throws StorageException
   * @throws IOException
   */
  @Test
  public void testPageBlobInputStream() throws URISyntaxException, StorageException, IOException {
    final int blobLength = 16 * 1024;
    final Random randGenerator = new Random();
    String blobName = BlobTestHelper.generateRandomBlobNameWithPrefix("testblob");
    final CloudPageBlob blobRef = this.container.getPageBlobReference(blobName);

    final byte[] buff = new byte[blobLength];
    randGenerator.nextBytes(buff);
    buff[0] = -1;
    buff[1] = -128;
    final ByteArrayInputStream sourceStream = new ByteArrayInputStream(buff);

    final BlobRequestOptions options = new BlobRequestOptions();
    final OperationContext operationContext = new OperationContext();
    options.setTimeoutIntervalInMs(90000);
    options.setRetryPolicyFactory(new RetryNoRetry());
    blobRef.upload(sourceStream, blobLength, null, options, operationContext);

    BlobInputStream blobStream = blobRef.openInputStream();

    for (int i = 0; i < blobLength; i++) {
      int data = blobStream.read();
      assertTrue(data >= 0);
      assertEquals(buff[i], (byte) data);
    }

    assertEquals(-1, blobStream.read());

    blobRef.delete();
  }
  @Test
  public void testPageBlobCopyWithMetadataOverride()
      throws URISyntaxException, StorageException, IOException, InterruptedException {
    Calendar calendar = Calendar.getInstance(Utility.UTC_ZONE);
    CloudPageBlob source = this.container.getPageBlobReference("source");

    byte[] buffer = BlobTestHelper.getRandomBuffer(512);
    ByteArrayInputStream stream = new ByteArrayInputStream(buffer);

    source.upload(stream, buffer.length);

    source.getMetadata().put("Test", "value");
    source.uploadMetadata();

    CloudPageBlob copy = this.container.getPageBlobReference("copy");
    copy.getMetadata().put("Test2", "value2");
    String copyId = copy.startCopy(BlobTestHelper.defiddler(source));
    BlobTestHelper.waitForCopy(copy);

    assertEquals(CopyStatus.SUCCESS, copy.getCopyState().getStatus());
    assertEquals(source.getQualifiedUri().getPath(), copy.getCopyState().getSource().getPath());
    assertEquals(buffer.length, copy.getCopyState().getTotalBytes().intValue());
    assertEquals(buffer.length, copy.getCopyState().getBytesCopied().intValue());
    assertEquals(copyId, copy.getCopyState().getCopyId());
    assertTrue(
        copy.getCopyState()
                .getCompletionTime()
                .compareTo(new Date(calendar.get(Calendar.MINUTE) - 1))
            > 0);

    ByteArrayOutputStream copyStream = new ByteArrayOutputStream();
    copy.download(copyStream);
    BlobTestHelper.assertStreamsAreEqual(
        stream, new ByteArrayInputStream(copyStream.toByteArray()));

    copy.downloadAttributes();
    source.downloadAttributes();
    BlobProperties prop1 = copy.getProperties();
    BlobProperties prop2 = source.getProperties();

    assertEquals(prop1.getCacheControl(), prop2.getCacheControl());
    assertEquals(prop1.getContentEncoding(), prop2.getContentEncoding());
    assertEquals(prop1.getContentDisposition(), prop2.getContentDisposition());
    assertEquals(prop1.getContentLanguage(), prop2.getContentLanguage());
    assertEquals(prop1.getContentMD5(), prop2.getContentMD5());
    assertEquals(prop1.getContentType(), prop2.getContentType());

    assertEquals("value2", copy.getMetadata().get("Test2"));
    assertFalse(copy.getMetadata().containsKey("Test"));

    copy.delete();
  }
  @Test
  public void testPageBlobCopyFromSnapshot()
      throws StorageException, IOException, URISyntaxException, InterruptedException {
    CloudPageBlob source = this.container.getPageBlobReference("source");

    byte[] buffer = BlobTestHelper.getRandomBuffer(512);
    ByteArrayInputStream stream = new ByteArrayInputStream(buffer);

    source.upload(stream, buffer.length);

    source.getMetadata().put("Test", "value");
    source.uploadMetadata();

    CloudPageBlob snapshot = (CloudPageBlob) source.createSnapshot();

    // Modify source
    byte[] buffer2 = BlobTestHelper.getRandomBuffer(512);
    ByteArrayInputStream stream2 = new ByteArrayInputStream(buffer2);
    source.getMetadata().put("Test", "newvalue");
    source.uploadMetadata();
    source.getProperties().setContentMD5(null);
    source.upload(stream2, buffer.length);

    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    source.download(outputStream);

    ByteArrayOutputStream snapshotStream = new ByteArrayOutputStream();
    snapshot.download(snapshotStream);
    BlobTestHelper.assertStreamsAreEqual(
        stream2, new ByteArrayInputStream(outputStream.toByteArray()));
    BlobTestHelper.assertStreamsAreEqual(
        stream, new ByteArrayInputStream(snapshotStream.toByteArray()));

    source.downloadAttributes();
    snapshot.downloadAttributes();
    assertFalse(source.getMetadata().get("Test").equals(snapshot.getMetadata().get("Test")));

    CloudPageBlob copy = this.container.getPageBlobReference("copy");
    String copyId = copy.startCopy(BlobTestHelper.defiddler(snapshot));
    BlobTestHelper.waitForCopy(copy);

    ByteArrayOutputStream copyStream = new ByteArrayOutputStream();
    copy.download(copyStream);

    assertEquals(CopyStatus.SUCCESS, copy.getCopyState().getStatus());
    BlobTestHelper.assertStreamsAreEqual(
        stream, new ByteArrayInputStream(copyStream.toByteArray()));
    assertEquals(copyId, copy.getProperties().getCopyState().getCopyId());

    copy.downloadAttributes();
    BlobProperties prop1 = copy.getProperties();
    BlobProperties prop2 = snapshot.getProperties();

    assertEquals(prop1.getCacheControl(), prop2.getCacheControl());
    assertEquals(prop1.getContentEncoding(), prop2.getContentEncoding());
    assertEquals(prop1.getContentDisposition(), prop2.getContentDisposition());
    assertEquals(prop1.getContentLanguage(), prop2.getContentLanguage());
    assertEquals(prop1.getContentMD5(), prop2.getContentMD5());
    assertEquals(prop1.getContentType(), prop2.getContentType());

    assertEquals("value", copy.getMetadata().get("Test"));

    copy.delete();
  }