author | martin |
Tue, 15 Sep 2015 21:56:04 -0700 | |
changeset 32649 | 2ee9017c7597 |
parent 31140 | 26e746beb490 |
child 41749 | e29b8b528cdb |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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/** |
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* @test 8014076 8025067 |
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* @summary unit test for Arrays.ParallelPrefix(). |
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* @author Tristan Yan |
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* @run testng ParallelPrefix |
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* @key intermittent |
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*/ |
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import java.util.Arrays; |
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import java.util.function.BinaryOperator; |
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import java.util.function.DoubleBinaryOperator; |
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import java.util.function.Function; |
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import java.util.function.IntBinaryOperator; |
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import java.util.function.LongBinaryOperator; |
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import java.util.stream.IntStream; |
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import java.util.stream.LongStream; |
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import static org.testng.Assert.*; |
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import org.testng.annotations.DataProvider; |
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import org.testng.annotations.Test; |
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public class ParallelPrefix { |
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//Array size less than MIN_PARTITION |
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private static final int SMALL_ARRAY_SIZE = 1 << 3; |
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//Array size equals MIN_PARTITION |
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private static final int THRESHOLD_ARRAY_SIZE = 1 << 4; |
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//Array size greater than MIN_PARTITION |
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private static final int MEDIUM_ARRAY_SIZE = 1 << 8; |
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//Array size much greater than MIN_PARTITION |
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private static final int LARGE_ARRAY_SIZE = 1 << 14; |
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private static final int[] ARRAY_SIZE_COLLECTION = new int[]{ |
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SMALL_ARRAY_SIZE, |
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THRESHOLD_ARRAY_SIZE, |
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MEDIUM_ARRAY_SIZE, |
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LARGE_ARRAY_SIZE |
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}; |
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@DataProvider(name = "intSet") |
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public static Object[][] intSet(){ |
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return genericData(size -> IntStream.range(0, size).toArray(), |
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new IntBinaryOperator[]{ |
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Integer::sum, |
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Integer::min}); |
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} |
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@DataProvider(name = "longSet") |
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public static Object[][] longSet(){ |
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return genericData(size -> LongStream.range(0, size).toArray(), |
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new LongBinaryOperator[]{ |
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Long::sum, |
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Long::min}); |
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} |
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@DataProvider(name = "doubleSet") |
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public static Object[][] doubleSet(){ |
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return genericData(size -> IntStream.range(0, size).mapToDouble(i -> (double)i).toArray(), |
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new DoubleBinaryOperator[]{ |
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Double::sum, |
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Double::min}); |
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} |
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@DataProvider(name = "stringSet") |
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public static Object[][] stringSet(){ |
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Function<Integer, String[]> stringsFunc = size -> |
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IntStream.range(0, size).mapToObj(Integer::toString).toArray(String[]::new); |
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BinaryOperator<String> concat = String::concat; |
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return genericData(stringsFunc, |
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(BinaryOperator<String>[]) new BinaryOperator[]{ |
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concat }); |
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} |
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private static <T, OPS> Object[][] genericData(Function<Integer, T> generateFunc, OPS[] ops) { |
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//test arrays which size is equals n-1, n, n+1, test random data |
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Object[][] data = new Object[ARRAY_SIZE_COLLECTION.length * 3 * ops.length][4]; |
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for(int n = 0; n < ARRAY_SIZE_COLLECTION.length; n++ ) { |
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for(int testValue = -1 ; testValue <= 1; testValue++) { |
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int array_size = ARRAY_SIZE_COLLECTION[n] + testValue; |
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for(int opsN = 0; opsN < ops.length; opsN++) { |
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int index = n * 3 * ops.length + (testValue + 1) * ops.length + opsN; |
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data[index][0] = generateFunc.apply(array_size); |
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data[index][1] = array_size / 3; |
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data[index][2] = 2 * array_size / 3; |
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data[index][3] = ops[opsN]; |
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} |
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} |
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} |
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return data; |
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} |
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@Test(dataProvider="intSet") |
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public void testParallelPrefixForInt(int[] data, int fromIndex, int toIndex, IntBinaryOperator op) { |
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int[] sequentialResult = data.clone(); |
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for (int index = fromIndex + 1; index < toIndex; index++) { |
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sequentialResult[index ] = op.applyAsInt(sequentialResult[index - 1], sequentialResult[index]); |
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} |
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|
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int[] parallelResult = data.clone(); |
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Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op); |
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assertArraysEqual(parallelResult, sequentialResult); |
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|
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int[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex); |
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Arrays.parallelPrefix(parallelRangeResult, op); |
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assertArraysEqual(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex)); |
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} |
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|
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@Test(dataProvider="longSet") |
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public void testParallelPrefixForLong(long[] data, int fromIndex, int toIndex, LongBinaryOperator op) { |
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long[] sequentialResult = data.clone(); |
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for (int index = fromIndex + 1; index < toIndex; index++) { |
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sequentialResult[index ] = op.applyAsLong(sequentialResult[index - 1], sequentialResult[index]); |
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} |
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|
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long[] parallelResult = data.clone(); |
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Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op); |
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assertArraysEqual(parallelResult, sequentialResult); |
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|
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long[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex); |
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Arrays.parallelPrefix(parallelRangeResult, op); |
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assertArraysEqual(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex)); |
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} |
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|
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@Test(dataProvider="doubleSet") |
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public void testParallelPrefixForDouble(double[] data, int fromIndex, int toIndex, DoubleBinaryOperator op) { |
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double[] sequentialResult = data.clone(); |
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for (int index = fromIndex + 1; index < toIndex; index++) { |
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sequentialResult[index ] = op.applyAsDouble(sequentialResult[index - 1], sequentialResult[index]); |
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} |
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|
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double[] parallelResult = data.clone(); |
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Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op); |
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assertArraysEqual(parallelResult, sequentialResult); |
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|
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double[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex); |
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Arrays.parallelPrefix(parallelRangeResult, op); |
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assertArraysEqual(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex)); |
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} |
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|
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@Test(dataProvider="stringSet") |
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public void testParallelPrefixForStringr(String[] data , int fromIndex, int toIndex, BinaryOperator<String> op) { |
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String[] sequentialResult = data.clone(); |
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for (int index = fromIndex + 1; index < toIndex; index++) { |
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sequentialResult[index ] = op.apply(sequentialResult[index - 1], sequentialResult[index]); |
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} |
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|
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String[] parallelResult = data.clone(); |
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Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op); |
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assertArraysEqual(parallelResult, sequentialResult); |
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|
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String[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex); |
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Arrays.parallelPrefix(parallelRangeResult, op); |
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assertArraysEqual(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex)); |
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} |
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|
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@Test |
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public void testNPEs() { |
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// null array |
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assertThrows( () -> Arrays.parallelPrefix((int[]) null, Integer::max), |
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NullPointerException.class, "should throw NPE"); |
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185 |
assertThrows( () -> Arrays.parallelPrefix((long []) null, Long::max), |
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186 |
NullPointerException.class, "should throw NPE"); |
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187 |
assertThrows( () -> Arrays.parallelPrefix((double []) null, Double::max), |
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188 |
NullPointerException.class, "should throw NPE"); |
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189 |
assertThrows( () -> Arrays.parallelPrefix((String []) null, String::concat), |
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190 |
NullPointerException.class, "should throw NPE"); |
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191 |
|
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192 |
// null array w/ range |
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193 |
assertThrows( () -> Arrays.parallelPrefix((int[]) null, 0, 0, Integer::max), |
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194 |
NullPointerException.class, "should throw NPE"); |
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195 |
assertThrows( () -> Arrays.parallelPrefix((long []) null, 0, 0, Long::max), |
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196 |
NullPointerException.class, "should throw NPE"); |
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197 |
assertThrows( () -> Arrays.parallelPrefix((double []) null, 0, 0, Double::max), |
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198 |
NullPointerException.class, "should throw NPE"); |
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199 |
assertThrows( () -> Arrays.parallelPrefix((String []) null, 0, 0, String::concat), |
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200 |
NullPointerException.class, "should throw NPE"); |
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|
201 |
|
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202 |
// null op |
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203 |
assertThrows( () -> Arrays.parallelPrefix(new int[] {}, null), |
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204 |
NullPointerException.class, "should throw NPE"); |
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205 |
assertThrows( () -> Arrays.parallelPrefix(new long[] {}, null), |
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|
206 |
NullPointerException.class, "should throw NPE"); |
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207 |
assertThrows( () -> Arrays.parallelPrefix(new double[] {}, null), |
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|
208 |
NullPointerException.class, "should throw NPE"); |
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209 |
assertThrows( () -> Arrays.parallelPrefix(new String[] {}, null), |
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|
210 |
NullPointerException.class, "should throw NPE"); |
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|
211 |
|
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212 |
// null op w/ range |
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213 |
assertThrows( () -> Arrays.parallelPrefix(new int[] {}, 0, 0, null), |
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|
214 |
NullPointerException.class, "should throw NPE"); |
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215 |
assertThrows( () -> Arrays.parallelPrefix(new long[] {}, 0, 0, null), |
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|
216 |
NullPointerException.class, "should throw NPE"); |
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217 |
assertThrows( () -> Arrays.parallelPrefix(new double[] {}, 0, 0, null), |
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|
218 |
NullPointerException.class, "should throw NPE"); |
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219 |
assertThrows( () -> Arrays.parallelPrefix(new String[] {}, 0, 0, null), |
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220 |
NullPointerException.class, "should throw NPE"); |
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221 |
} |
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|
222 |
|
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223 |
@Test |
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224 |
public void testIAEs() { |
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225 |
assertThrows( () -> Arrays.parallelPrefix(new int[] {}, 1, 0, Integer::max), |
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226 |
IllegalArgumentException.class, "should throw IAE"); |
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227 |
assertThrows( () -> Arrays.parallelPrefix(new long[] {}, 1, 0, Long::max), |
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228 |
IllegalArgumentException.class, "should throw IAE"); |
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229 |
assertThrows( () -> Arrays.parallelPrefix(new double[] {}, 1, 0, Double::max), |
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230 |
IllegalArgumentException.class, "should throw IAE"); |
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231 |
assertThrows( () -> Arrays.parallelPrefix(new String[] {}, 1, 0, String::concat), |
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232 |
IllegalArgumentException.class, "should throw IAE"); |
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} |
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@Test |
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public void testAIOBEs() { |
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// bad "fromIndex" |
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assertThrows( () -> Arrays.parallelPrefix(new int[] {}, -1, 0, Integer::max), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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assertThrows( () -> Arrays.parallelPrefix(new long[] {}, -1, 0, Long::max), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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assertThrows( () -> Arrays.parallelPrefix(new double[] {}, -1, 0, Double::max), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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assertThrows( () -> Arrays.parallelPrefix(new String[] {}, -1, 0, String::concat), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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|
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// bad "toIndex" |
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assertThrows( () -> Arrays.parallelPrefix(new int[] {}, 0, 1, Integer::max), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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assertThrows( () -> Arrays.parallelPrefix(new long[] {}, 0, 1, Long::max), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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assertThrows( () -> Arrays.parallelPrefix(new double[] {}, 0, 1, Double::max), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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assertThrows( () -> Arrays.parallelPrefix(new String[] {}, 0, 1, String::concat), |
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ArrayIndexOutOfBoundsException.class, "should throw AIOBE"); |
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} |
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|
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// "library" code |
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|
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public interface Thrower<T extends Throwable> { |
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|
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public void run() throws T; |
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} |
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|
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public static <T extends Throwable> void assertThrows(Thrower<T> thrower, Class<T> throwable) { |
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assertThrows(thrower, throwable, null); |
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} |
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|
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public static <T extends Throwable> void assertThrows(Thrower<T> thrower, Class<T> throwable, String message) { |
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Throwable thrown; |
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try { |
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thrower.run(); |
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thrown = null; |
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} catch (Throwable caught) { |
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thrown = caught; |
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} |
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|
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assertInstance(thrown, throwable, |
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((null != message) ? message : "") + |
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" Failed to throw " + throwable.getCanonicalName()); |
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} |
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283 |
|
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public static <T extends Throwable> void assertThrows(Class<T> throwable, String message, Thrower<T>... throwers) { |
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for(Thrower<T> thrower : throwers) { |
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assertThrows(thrower, throwable, message); |
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} |
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} |
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|
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public static void assertInstance(Object actual, Class<?> expected) { |
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assertInstance(expected.isInstance(actual), null); |
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} |
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|
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public static void assertInstance(Object actual, Class<?> expected, String message) { |
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assertTrue(expected.isInstance(actual), message); |
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} |
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|
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static void assertArraysEqual(int[] actual, int[] expected) { |
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try { |
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assertEquals(actual, expected, ""); |
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} catch (AssertionError x) { |
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throw new AssertionError(String.format("Expected:%s, actual:%s", |
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Arrays.toString(expected), Arrays.toString(actual)), x); |
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304 |
} |
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305 |
} |
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306 |
|
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static void assertArraysEqual(long[] actual, long[] expected) { |
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try { |
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assertEquals(actual, expected, ""); |
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} catch (AssertionError x) { |
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throw new AssertionError(String.format("Expected:%s, actual:%s", |
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Arrays.toString(expected), Arrays.toString(actual)), x); |
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313 |
} |
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314 |
} |
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315 |
|
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316 |
static void assertArraysEqual(double[] actual, double[] expected) { |
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try { |
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assertEquals(actual, expected, ""); |
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} catch (AssertionError x) { |
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throw new AssertionError(String.format("Expected:%s, actual:%s", |
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Arrays.toString(expected), Arrays.toString(actual)), x); |
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322 |
} |
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323 |
} |
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324 |
|
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325 |
static void assertArraysEqual(String[] actual, String[] expected) { |
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326 |
try { |
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assertEquals(actual, expected, ""); |
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328 |
} catch (AssertionError x) { |
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throw new AssertionError(String.format("Expected:%s, actual:%s", |
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Arrays.toString(expected), Arrays.toString(actual)), x); |
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331 |
} |
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} |
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} |
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334 |