/*
* Copyright 2016 NAVER Corp.
*
* 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.navercorp.pinpoint.common.util;
import com.google.common.collect.Lists;
import org.junit.Assert;
import org.junit.Test;
import java.util.Collections;
/**
* @author Woonduk Kang(emeroad)
*/
public class CollectionUtilsTest {
@Test
public void nullSafeSize() throws Exception {
Assert.assertEquals(CollectionUtils.nullSafeSize(Lists.newArrayList(123)), 1);
Assert.assertEquals(CollectionUtils.nullSafeSize(Collections.emptyList()), 0);
Assert.assertEquals(CollectionUtils.nullSafeSize(null), 0);
}
@Test
public void nullSafeSize_nullValue() throws Exception {
Assert.assertEquals(CollectionUtils.nullSafeSize(null, -1), -1);
}
@Test
public void isEmpty() throws Exception {
Assert.assertTrue(CollectionUtils.isEmpty(null));
Assert.assertTrue(CollectionUtils.isEmpty(Collections.emptyList()));
}
@Test
public void isNotEmpty() throws Exception {
Assert.assertFalse(CollectionUtils.isNotEmpty(Collections.emptyList()));
Assert.assertFalse(CollectionUtils.isNotEmpty(null));
}
}