| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package libcore.java.nio; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ReadOnlyBufferException; |
| import junit.framework.TestCase; |
| |
| public final class NoArrayTest extends TestCase { |
| public void testReadOnly() { |
| // A read-only buffer must not expose its array. |
| assertNoArray(ByteBuffer.wrap(new byte[32]).asReadOnlyBuffer()); |
| assertNoArray(ByteBuffer.allocate(32).asReadOnlyBuffer()); |
| assertNoArray(ByteBuffer.allocateDirect(32).asReadOnlyBuffer()); |
| } |
| |
| private void assertNoArray(ByteBuffer buf) { |
| assertFalse(buf.hasArray()); |
| try { |
| buf.array(); |
| fail(); |
| } catch (ReadOnlyBufferException expected) { |
| } catch (UnsupportedOperationException expected) { |
| } |
| try { |
| buf.arrayOffset(); |
| fail(); |
| } catch (ReadOnlyBufferException expected) { |
| } catch (UnsupportedOperationException expected) { |
| } |
| } |
| } |