/*
* 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.tests;
import com.facebook.presto.metadata.MetadataManager;
import com.facebook.presto.testing.QueryRunner;
import org.intellij.lang.annotations.Language;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import static com.facebook.presto.tests.tpch.TpchQueryRunner.createQueryRunner;
import static org.testng.Assert.assertEquals;
/**
* This is integration / unit test suite.
* The reason for having it here is to ensure that we won't leak memory in MetadataManager
* while registering catalog -> query Id mapping.
* This mapping has to be manually cleaned when query finishes execution (Metadata#cleanupQuery method).
*/
@Test(singleThreaded = true)
public class TestMetadataManager
{
private QueryRunner queryRunner;
private MetadataManager metadataManager;
@BeforeClass
public void setUp()
throws Exception
{
queryRunner = createQueryRunner();
metadataManager = (MetadataManager) queryRunner.getMetadata();
}
@AfterClass(alwaysRun = true)
public void tearDown()
{
queryRunner.close();
}
@Test
public void testMetadataIsClearedAfterQueryFinished()
{
@Language("SQL") String sql = "SELECT * FROM nation";
queryRunner.execute(sql);
assertEquals(metadataManager.getCatalogsByQueryId().size(), 0);
}
@Test
public void testMetadataIsClearedAfterQueryFailed()
{
@Language("SQL") String sql = "SELECT nationkey/0 FROM nation"; // will raise division by zero exception
try {
queryRunner.execute(sql);
}
catch (Throwable t) {
// query should fail
}
assertEquals(metadataManager.getCatalogsByQueryId().size(), 0);
}
}