@Test
public void testStateEquals() {
replay(storageRpcMock);
reader = new BlobReadChannel(options, BLOB_ID, EMPTY_RPC_OPTIONS);
@SuppressWarnings("resource") // avoid closing when you don't want partial writes to GCS
ReadChannel secondReader = new BlobReadChannel(options, BLOB_ID, EMPTY_RPC_OPTIONS);
RestorableState<ReadChannel> state = reader.capture();
RestorableState<ReadChannel> secondState = secondReader.capture();
assertEquals(state, secondState);
assertEquals(state.hashCode(), secondState.hashCode());
assertEquals(state.toString(), secondState.toString());
}
@Test
public void testSaveAndRestore() throws IOException {
byte[] firstResult = randomByteArray(DEFAULT_CHUNK_SIZE);
byte[] secondResult = randomByteArray(DEFAULT_CHUNK_SIZE);
ByteBuffer firstReadBuffer = ByteBuffer.allocate(42);
ByteBuffer secondReadBuffer = ByteBuffer.allocate(DEFAULT_CHUNK_SIZE);
expect(storageRpcMock.read(BLOB_ID.toPb(), EMPTY_RPC_OPTIONS, 0, DEFAULT_CHUNK_SIZE))
.andReturn(StorageRpc.Tuple.of("etag", firstResult));
expect(storageRpcMock.read(BLOB_ID.toPb(), EMPTY_RPC_OPTIONS, 42, DEFAULT_CHUNK_SIZE))
.andReturn(StorageRpc.Tuple.of("etag", secondResult));
replay(storageRpcMock);
reader = new BlobReadChannel(options, BLOB_ID, EMPTY_RPC_OPTIONS);
reader.read(firstReadBuffer);
RestorableState<ReadChannel> readerState = reader.capture();
ReadChannel restoredReader = readerState.restore();
restoredReader.read(secondReadBuffer);
assertArrayEquals(
Arrays.copyOf(firstResult, firstReadBuffer.capacity()), firstReadBuffer.array());
assertArrayEquals(secondResult, secondReadBuffer.array());
}