/*
* 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.plugin.blackhole;
import com.facebook.presto.spi.ConnectorOutputTableHandle;
import com.facebook.presto.spi.ConnectorTableMetadata;
import com.facebook.presto.spi.SchemaTableName;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import io.airlift.units.Duration;
import org.testng.annotations.Test;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import static com.facebook.presto.testing.TestingConnectorSession.SESSION;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
public class TestBlackHoleMetadata
{
private final BlackHoleMetadata metadata = new BlackHoleMetadata();
private final Map<String, Object> tableProperties = ImmutableMap.of(
BlackHoleConnector.SPLIT_COUNT_PROPERTY, 0,
BlackHoleConnector.PAGES_PER_SPLIT_PROPERTY, 0,
BlackHoleConnector.ROWS_PER_PAGE_PROPERTY, 0,
BlackHoleConnector.FIELD_LENGTH_PROPERTY, 16,
BlackHoleConnector.PAGE_PROCESSING_DELAY, new Duration(0, SECONDS));
@Test
public void tableIsCreatedAfterCommits()
{
assertThatNoTableIsCreated();
SchemaTableName schemaTableName = new SchemaTableName("default", "temp_table");
ConnectorOutputTableHandle table = metadata.beginCreateTable(
SESSION,
new ConnectorTableMetadata(schemaTableName, ImmutableList.of(), tableProperties),
Optional.empty());
assertThatNoTableIsCreated();
metadata.finishCreateTable(SESSION, table, ImmutableList.of());
List<SchemaTableName> tables = metadata.listTables(SESSION, null);
assertTrue(tables.size() == 1, "Expected only one table.");
assertTrue(tables.get(0).getTableName().equals("temp_table"), "Expected table with name 'temp_table'");
}
private void assertThatNoTableIsCreated()
{
assertEquals(metadata.listTables(SESSION, null), ImmutableList.of(), "No table was expected");
}
}