/*
 * 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 org.apache.bookkeeper.mledger.offload.jcloud.impl;

import static org.testng.Assert.assertEquals;
import java.io.IOException;
import java.io.InputStream;
import lombok.Cleanup;
import org.apache.bookkeeper.mledger.offload.jcloud.BlobStoreTestBase;
import org.testng.annotations.Test;

public class BlobStoreBackedInputStreamTest extends BlobStoreTestBase {

    @Test
    public void testFillBuffer() throws Exception {
        @Cleanup
        BlobStoreBackedInputStreamImpl bis = new BlobStoreBackedInputStreamImpl(
            blobStore, BUCKET, "testFillBuffer", (k, md) -> {
        }, 2048, 512);

        InputStream is = new InputStream() {
            int count = 10;

            @Override
            public int read() throws IOException {
                if (count-- > 0) {
                    return 1;
                } else {
                    return -1;
                }
            }
        };
        bis.fillBuffer(is, 20);
        assertEquals(bis.getBuffer().readableBytes(), 10);
    }
}
