/*
* Licensed 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 com.facebook.presto.serde;
import com.facebook.presto.block.BlockBuilder;
import com.facebook.presto.block.uncompressed.UncompressedBlock;
import com.facebook.presto.operator.Page;
import io.airlift.slice.DynamicSliceOutput;
import org.testng.annotations.Test;
import java.util.Iterator;
import static com.facebook.presto.operator.PageAssertions.assertPageEquals;
import static com.facebook.presto.serde.PagesSerde.readPages;
import static com.facebook.presto.serde.PagesSerde.writePages;
import static com.facebook.presto.tuple.TupleInfo.SINGLE_VARBINARY;
import static org.testng.Assert.assertFalse;
public class TestPagesSerde
{
@Test
public void testRoundTrip()
{
UncompressedBlock expectedBlock = new BlockBuilder(SINGLE_VARBINARY)
.append("alice")
.append("bob")
.append("charlie")
.append("dave")
.build();
Page expectedPage = new Page(expectedBlock, expectedBlock, expectedBlock);
DynamicSliceOutput sliceOutput = new DynamicSliceOutput(1024);
writePages(sliceOutput, expectedPage, expectedPage, expectedPage);
Iterator<Page> pageIterator = readPages(sliceOutput.slice().getInput());
assertPageEquals(pageIterator.next(), expectedPage);
assertPageEquals(pageIterator.next(), expectedPage);
assertPageEquals(pageIterator.next(), expectedPage);
assertFalse(pageIterator.hasNext());
}
}