| /* |
| * 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.cassandra.spark.utils; |
| |
| import java.util.function.Consumer; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import static org.apache.cassandra.spark.utils.ArrayUtils.retain; |
| |
| public class ArrayUtilsTest |
| { |
| @Test |
| public void testRetain() |
| { |
| Object[] source = new Object[]{1, 2, 3, 4, 5}; |
| Assert.assertArrayEquals(new Object[]{1, 2, 3}, retain(source, 0, 3)); |
| } |
| |
| @Test |
| public void testRetainThrows() |
| { |
| // Not using JUnit rule ExpectedException in order to assert multiple throwables |
| expectedThrows(() -> retain(null, 0, 1), |
| throwable -> Assert.assertSame(IllegalArgumentException.class, throwable.getClass())); |
| |
| expectedThrows(() -> retain(new Object[]{1, 2, 3}, -1, 1), |
| throwable -> Assert.assertSame(IllegalArgumentException.class, throwable.getClass())); |
| |
| expectedThrows(() -> retain(new Object[]{1, 2, 3}, 0, -1), |
| throwable -> Assert.assertSame(IllegalArgumentException.class, throwable.getClass())); |
| |
| expectedThrows(() -> retain(new Object[]{1, 2, 3}, 0, 5), |
| throwable -> Assert.assertSame(IllegalArgumentException.class, throwable.getClass())); |
| } |
| |
| private void expectedThrows(Runnable test, Consumer<Throwable> throwableVerifier) |
| { |
| try |
| { |
| test.run(); |
| } |
| catch (Throwable throwable) |
| { |
| throwableVerifier.accept(throwable); |
| } |
| } |
| } |