343 lines
13 KiB
Java
343 lines
13 KiB
Java
/*
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* Copyright (c) 2013, 2017, 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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* @test
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* @bug 8005698
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* @library /lib/testlibrary/bootlib
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* @build java.base/java.util.SpliteratorTestHelper
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* @run testng SpliteratorCollisions
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* @summary Spliterator traversing and splitting hash maps containing colliding hashes
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*/
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.LinkedHashMap;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Spliterator;
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import java.util.SpliteratorTestHelper;
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import java.util.TreeSet;
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import java.util.function.Function;
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import java.util.function.Supplier;
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import java.util.function.UnaryOperator;
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public class SpliteratorCollisions extends SpliteratorTestHelper {
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private static final List<Integer> SIZES = Arrays.asList(0, 1, 10, 100, 1000);
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private static class SpliteratorDataBuilder<T> {
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List<Object[]> data;
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List<T> exp;
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Map<T, T> mExp;
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SpliteratorDataBuilder(List<Object[]> data, List<T> exp) {
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this.data = data;
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this.exp = exp;
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this.mExp = createMap(exp);
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}
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Map<T, T> createMap(List<T> l) {
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Map<T, T> m = new LinkedHashMap<>();
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for (T t : l) {
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m.put(t, t);
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}
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return m;
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}
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void add(String description, Collection<?> expected, Supplier<Spliterator<?>> s) {
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description = joiner(description).toString();
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data.add(new Object[]{description, expected, s});
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}
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void add(String description, Supplier<Spliterator<?>> s) {
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add(description, exp, s);
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}
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void addCollection(Function<Collection<T>, ? extends Collection<T>> c) {
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add("new " + c.apply(Collections.<T>emptyList()).getClass().getName() + ".spliterator()",
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() -> c.apply(exp).spliterator());
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}
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void addList(Function<Collection<T>, ? extends List<T>> l) {
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// @@@ If collection is instance of List then add sub-list tests
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addCollection(l);
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}
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void addMap(Function<Map<T, T>, ? extends Map<T, T>> m) {
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String description = "new " + m.apply(Collections.<T, T>emptyMap()).getClass().getName();
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add(description + ".keySet().spliterator()", () -> m.apply(mExp).keySet().spliterator());
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add(description + ".values().spliterator()", () -> m.apply(mExp).values().spliterator());
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add(description + ".entrySet().spliterator()", mExp.entrySet(), () -> m.apply(mExp).entrySet().spliterator());
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}
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StringBuilder joiner(String description) {
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return new StringBuilder(description).
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append(" {").
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append("size=").append(exp.size()).
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append("}");
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}
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}
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static Object[][] spliteratorDataProvider;
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@DataProvider(name = "HashableIntSpliterator")
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public static Object[][] spliteratorDataProvider() {
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if (spliteratorDataProvider != null) {
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return spliteratorDataProvider;
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}
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List<Object[]> data = new ArrayList<>();
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for (int size : SIZES) {
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List<HashableInteger> exp = listIntRange(size, false);
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SpliteratorDataBuilder<HashableInteger> db = new SpliteratorDataBuilder<>(data, exp);
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// Maps
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db.addMap(HashMap::new);
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db.addMap(LinkedHashMap::new);
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// Collections that use HashMap
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db.addCollection(HashSet::new);
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db.addCollection(LinkedHashSet::new);
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db.addCollection(TreeSet::new);
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}
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return spliteratorDataProvider = data.toArray(new Object[0][]);
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}
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static Object[][] spliteratorDataProviderWithNull;
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@DataProvider(name = "HashableIntSpliteratorWithNull")
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public static Object[][] spliteratorNullDataProvider() {
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if (spliteratorDataProviderWithNull != null) {
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return spliteratorDataProviderWithNull;
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}
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List<Object[]> data = new ArrayList<>();
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for (int size : SIZES) {
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List<HashableInteger> exp = listIntRange(size, true);
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SpliteratorDataBuilder<HashableInteger> db = new SpliteratorDataBuilder<>(data, exp);
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// Maps
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db.addMap(HashMap::new);
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db.addMap(LinkedHashMap::new);
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// TODO: add this back in if we decide to keep TreeBin in WeakHashMap
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//db.addMap(WeakHashMap::new);
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// Collections that use HashMap
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db.addCollection(HashSet::new);
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db.addCollection(LinkedHashSet::new);
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// db.addCollection(TreeSet::new);
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}
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return spliteratorDataProviderWithNull = data.toArray(new Object[0][]);
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}
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static final class HashableInteger implements Comparable<HashableInteger> {
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final int value;
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final int hashmask; //yes duplication
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HashableInteger(int value, int hashmask) {
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this.value = value;
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this.hashmask = hashmask;
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}
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@Override
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public boolean equals(Object obj) {
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if (obj instanceof HashableInteger) {
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HashableInteger other = (HashableInteger) obj;
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return other.value == value;
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}
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return false;
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}
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@Override
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public int hashCode() {
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return value % hashmask;
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}
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@Override
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public int compareTo(HashableInteger o) {
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return value - o.value;
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}
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@Override
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public String toString() {
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return Integer.toString(value);
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}
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}
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private static List<HashableInteger> listIntRange(int upTo, boolean withNull) {
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List<HashableInteger> exp = new ArrayList<>();
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if (withNull) {
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exp.add(null);
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}
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for (int i = 0; i < upTo; i++) {
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exp.add(new HashableInteger(i, 10));
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}
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return Collections.unmodifiableList(exp);
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testNullPointerException(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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assertThrowsNPE(() -> s.get().forEachRemaining(null));
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assertThrowsNPE(() -> s.get().tryAdvance(null));
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testNullPointerExceptionWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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assertThrowsNPE(() -> s.get().forEachRemaining(null));
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assertThrowsNPE(() -> s.get().tryAdvance(null));
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testForEach(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testForEach(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testForEachWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testForEach(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testTryAdvance(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testTryAdvance(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testTryAdvanceWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testTryAdvance(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testMixedTryAdvanceForEach(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testMixedTryAdvanceForEach(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testMixedTryAdvanceForEachWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testMixedTryAdvanceForEach(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testMixedTraverseAndSplit(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testMixedTraverseAndSplit(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testMixedTraverseAndSplitWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testMixedTraverseAndSplit(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testSplitAfterFullTraversal(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitAfterFullTraversal(s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testSplitAfterFullTraversalWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitAfterFullTraversal(s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testSplitOnce(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitOnce(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testSplitOnceWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitOnce(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testSplitSixDeep(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitSixDeep(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testSplitSixDeepWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitSixDeep(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliterator")
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void testSplitUntilNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitUntilNull(exp, s, UnaryOperator.identity());
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}
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@Test(dataProvider = "HashableIntSpliteratorWithNull")
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void testSplitUntilNullWithNull(String description,
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Collection<HashableInteger> exp,
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Supplier<Spliterator<HashableInteger>> s) {
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testSplitUntilNull(exp, s, UnaryOperator.identity());
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}
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}
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