/*
* 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.block;
import com.facebook.presto.spi.block.BlockBuilder;
import com.facebook.presto.spi.block.BlockBuilderStatus;
import com.facebook.presto.spi.block.ShortArrayBlockBuilder;
import com.google.common.primitives.Ints;
import io.airlift.slice.Slice;
import org.testng.annotations.Test;
import static io.airlift.slice.SizeOf.SIZE_OF_SHORT;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
public class TestShortArrayBlock
extends AbstractTestBlock
{
@Test
public void test()
{
Slice[] expectedValues = createTestValue(17);
assertFixedWithValues(expectedValues);
assertFixedWithValues((Slice[]) alternatingNullValues(expectedValues));
}
@Test
public void testCopyPositions()
throws Exception
{
Slice[] expectedValues = (Slice[]) alternatingNullValues(createTestValue(17));
BlockBuilder blockBuilder = createBlockBuilderWithValues(expectedValues);
assertBlockFilteredPositions(expectedValues, blockBuilder.build(), Ints.asList(0, 2, 4, 6, 7, 9, 10, 16));
}
@Test
public void testLazyBlockBuilderInitialization()
throws Exception
{
Slice[] expectedValues = createTestValue(100);
BlockBuilder emptyBlockBuilder = new ShortArrayBlockBuilder(new BlockBuilderStatus(), 0);
BlockBuilder blockBuilder = new ShortArrayBlockBuilder(new BlockBuilderStatus(), expectedValues.length);
assertEquals(blockBuilder.getSizeInBytes(), emptyBlockBuilder.getSizeInBytes());
assertEquals(blockBuilder.getRetainedSizeInBytes(), emptyBlockBuilder.getRetainedSizeInBytes());
writeValues(expectedValues, blockBuilder);
assertTrue(blockBuilder.getSizeInBytes() > emptyBlockBuilder.getSizeInBytes());
assertTrue(blockBuilder.getRetainedSizeInBytes() > emptyBlockBuilder.getRetainedSizeInBytes());
blockBuilder = blockBuilder.newBlockBuilderLike(new BlockBuilderStatus());
assertEquals(blockBuilder.getSizeInBytes(), emptyBlockBuilder.getSizeInBytes());
assertEquals(blockBuilder.getRetainedSizeInBytes(), emptyBlockBuilder.getRetainedSizeInBytes());
}
private void assertFixedWithValues(Slice[] expectedValues)
{
BlockBuilder blockBuilder = createBlockBuilderWithValues(expectedValues);
assertBlock(blockBuilder, expectedValues);
assertBlock(blockBuilder.build(), expectedValues);
}
private static BlockBuilder createBlockBuilderWithValues(Slice[] expectedValues)
{
ShortArrayBlockBuilder blockBuilder = new ShortArrayBlockBuilder(new BlockBuilderStatus(), expectedValues.length);
writeValues(expectedValues, blockBuilder);
return blockBuilder;
}
private static void writeValues(Slice[] expectedValues, BlockBuilder blockBuilder)
{
for (Slice expectedValue : expectedValues) {
if (expectedValue == null) {
blockBuilder.appendNull();
}
else {
blockBuilder.writeShort(expectedValue.getShort(0)).closeEntry();
}
}
}
private static Slice[] createTestValue(int positionCount)
{
Slice[] expectedValues = new Slice[positionCount];
for (int position = 0; position < positionCount; position++) {
expectedValues[position] = createExpectedValue(SIZE_OF_SHORT);
}
return expectedValues;
}
@Override
protected boolean isByteAccessSupported()
{
return false;
}
@Override
protected boolean isShortAccessSupported()
{
return true;
}
@Override
protected boolean isIntAccessSupported()
{
return false;
}
@Override
protected boolean isLongAccessSupported()
{
return false;
}
@Override
protected boolean isSliceAccessSupported()
{
return false;
}
}