/*
* 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.memory;
import com.google.common.collect.ImmutableMap;
import io.airlift.units.DataSize;
import org.testng.annotations.Test;
import java.util.Map;
import static io.airlift.configuration.testing.ConfigAssertions.assertFullMapping;
import static io.airlift.units.DataSize.Unit.BYTE;
import static io.airlift.units.DataSize.Unit.GIGABYTE;
import static org.testng.Assert.fail;
public class TestReservedSystemMemoryConfig
{
@Test
public void testDefaults()
{
// This can't use assertRecordedDefaults because the default value is dependent on the current max heap size, which varies based on the current size of the survivor space.
for (int i = 0; i < 1_000; i++) {
DataSize expected = new DataSize(Runtime.getRuntime().maxMemory() * 0.4, BYTE);
ReservedSystemMemoryConfig config = new ReservedSystemMemoryConfig();
if (expected.equals(config.getReservedSystemMemory())) {
return;
}
}
// We can't make this 100% deterministic, since we don't know when the survivor space will change sizes, but assume that something is broken if we got the wrong answer 1000 times
fail();
}
@Test
public void testExplicitPropertyMappings()
{
Map<String, String> properties = new ImmutableMap.Builder<String, String>()
.put("resources.reserved-system-memory", "1GB")
.build();
ReservedSystemMemoryConfig expected = new ReservedSystemMemoryConfig()
.setReservedSystemMemory(new DataSize(1, GIGABYTE));
assertFullMapping(properties, expected);
}
}