/* 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) {
}
}
}