/*
* 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.spi.block;
import io.airlift.slice.Slices;
import org.testng.annotations.Test;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static io.airlift.slice.SizeOf.SIZE_OF_INT;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
public class TestVariableWidthBlockBuilder
{
private static final int VARCHAR_VALUE_SIZE = 7;
private static final int VARCHAR_ENTRY_SIZE = SIZE_OF_INT + VARCHAR_VALUE_SIZE;
private static final int EXPECTED_ENTRY_COUNT = 3;
@Test
public void testFixedBlockIsFull()
throws Exception
{
testIsFull(new PageBuilderStatus(VARCHAR_ENTRY_SIZE * EXPECTED_ENTRY_COUNT, 1024));
testIsFull(new PageBuilderStatus(1024, VARCHAR_ENTRY_SIZE * EXPECTED_ENTRY_COUNT));
}
private void testIsFull(PageBuilderStatus pageBuilderStatus)
{
BlockBuilder blockBuilder = new VariableWidthBlockBuilder(pageBuilderStatus.createBlockBuilderStatus(), 32, 32);
assertTrue(pageBuilderStatus.isEmpty());
while (!pageBuilderStatus.isFull()) {
VARCHAR.writeSlice(blockBuilder, Slices.allocate(VARCHAR_VALUE_SIZE));
}
assertEquals(blockBuilder.getPositionCount(), EXPECTED_ENTRY_COUNT);
assertEquals(pageBuilderStatus.isFull(), true);
}
}