@Test
public void testClearPages() throws URISyntaxException, StorageException, IOException {
int blobLengthToUse = 8 * 512;
byte[] buffer = BlobTestHelper.getRandomBuffer(8 * 512);
String blobName = BlobTestHelper.generateRandomBlobNameWithPrefix("testblob");
final CloudPageBlob blobRef = this.container.getPageBlobReference(blobName);
blobRef.create(blobLengthToUse);
assertNull(blobRef.getProperties().getPageBlobSequenceNumber());
// Upload one page (page 0)
ByteArrayInputStream inputStream = new ByteArrayInputStream(buffer);
blobRef.uploadPages(inputStream, 0, blobLengthToUse);
assertNotNull(blobRef.getProperties().getPageBlobSequenceNumber());
try {
blobRef.clearPages(0, 256);
fail("Did not throw expected exception on non-512-byte-aligned length");
} catch (IllegalArgumentException ex) {
assertEquals(SR.INVALID_PAGE_BLOB_LENGTH, ex.getMessage());
}
try {
blobRef.clearPages(3 * 256, 3 * 512);
fail("Did not throw expected exception on non-512-byte-aligned offset");
} catch (IllegalArgumentException ex) {
assertEquals(SR.INVALID_PAGE_START_OFFSET, ex.getMessage());
}
blobRef.clearPages(3 * 512, 2 * 512);
assertNotNull(blobRef.getProperties().getPageBlobSequenceNumber());
byte[] result = new byte[blobLengthToUse];
blobRef.downloadToByteArray(result, 0);
int i = 0;
for (; i < 3 * 512; i++) {
assertEquals(buffer[i], result[i]);
}
for (; i < 5 * 512; i++) {
assertEquals(0, result[i]);
}
for (; i < 8 * 512; i++) {
assertEquals(buffer[i], result[i]);
}
}
