/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.tajo.catalog.statistics;
import org.apache.tajo.catalog.Column;
import org.apache.tajo.catalog.json.CatalogGsonHelper;
import org.apache.tajo.common.TajoDataTypes.Type;
import org.apache.tajo.datum.DatumFactory;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class TestColumnStat {
@Test
public final void testColumnStat() {
ColumnStat stat = new ColumnStat(new Column("test", Type.INT8));
stat.setNumDistVals(1000);
stat.setNumNulls(999);
assertTrue(1000 == stat.getNumDistValues());
assertTrue(999 == stat.getNumNulls());
ColumnStat stat2 = new ColumnStat(stat.getProto());
assertTrue(1000 == stat2.getNumDistValues());
assertTrue(999 == stat2.getNumNulls());
}
@Test
public final void testEqualsObject() {
ColumnStat stat = new ColumnStat(new Column("test", Type.INT8));
stat.setNumDistVals(1000);
stat.setNumNulls(999);
stat.setMinValue(DatumFactory.createInt8(5));
stat.setMaxValue(DatumFactory.createInt8(10));
ColumnStat stat2 = new ColumnStat(stat.getProto());
assertEquals(stat, stat2);
}
@Test
public final void testJson() throws CloneNotSupportedException {
ColumnStat stat = new ColumnStat(new Column("test", Type.INT8));
stat.setNumDistVals(1000);
stat.setNumNulls(999);
stat.setMinValue(DatumFactory.createInt8(5));
stat.setMaxValue(DatumFactory.createInt8(10));
String json = stat.toJson();
ColumnStat fromJson = CatalogGsonHelper.fromJson(json, ColumnStat.class);
assertEquals(stat, fromJson);
}
@Test
public final void testClone() throws CloneNotSupportedException {
ColumnStat stat = new ColumnStat(new Column("test", Type.INT8));
stat.setNumDistVals(1000);
stat.setNumNulls(999);
stat.setMinValue(DatumFactory.createInt8(5));
stat.setMaxValue(DatumFactory.createInt8(10));
ColumnStat stat2 = (ColumnStat) stat.clone();
assertEquals(stat, stat2);
}
}