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/*
* DSI utilities
*
* Copyright (C) 2011-2023 Sebastiano Vigna
*
* This program and the accompanying materials are made available under the
* terms of the GNU Lesser General Public License v2.1 or later,
* which is available at
* http://www.gnu.org/licenses/old-licenses/lgpl-2.1-standalone.html,
* or the Apache Software License 2.0, which is available at
* https://www.apache.org/licenses/LICENSE-2.0.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
*
* SPDX-License-Identifier: LGPL-2.1-or-later OR Apache-2.0
*/
package it.unimi.dsi.stat;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
public class SummaryStatsTest {
@Test
public void test() {
final SummaryStats summaryStats = new SummaryStats();
summaryStats.add(0);
assertEquals(0, summaryStats.sum(), 0);
assertEquals(0, summaryStats.mean(), 0);
assertEquals(0, summaryStats.variance(), 0);
assertEquals(0, summaryStats.min(), 0);
assertEquals(0, summaryStats.max(), 0);
assertEquals(1, summaryStats.size64());
summaryStats.add(1);
assertEquals(1, summaryStats.sum(), 0);
assertEquals(.5, summaryStats.mean(), 0);
assertEquals(.25, summaryStats.variance(), 0);
assertEquals(0, summaryStats.min(), 0);
assertEquals(1, summaryStats.max(), 0);
assertEquals(2, summaryStats.size64());
}
}
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