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test/java/util/Spliterator/SpliteratorCollisions.java
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@@ -1,7 +1,7 @@
/*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
@@ -22,44 +22,39 @@
*/
/**
* @test
* @bug 8005698
+ * @library ../stream/bootlib
+ * @build java.base/java.util.SpliteratorTestHelper
* @run testng SpliteratorCollisions
* @summary Spliterator traversing and splitting hash maps containing colliding hashes
- * @author Brent Christian
*/
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
-import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
-import java.util.Deque;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Spliterator;
+import java.util.SpliteratorTestHelper;
import java.util.TreeSet;
-import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.function.UnaryOperator;
-import static org.testng.Assert.*;
-import static org.testng.Assert.assertEquals;
+public class SpliteratorCollisions extends SpliteratorTestHelper {
-@Test
-public class SpliteratorCollisions {
-
- private static List<Integer> SIZES = Arrays.asList(0, 1, 10, 100, 1000);
+ private static final List<Integer> SIZES = Arrays.asList(0, 1, 10, 100, 1000);
private static class SpliteratorDataBuilder<T> {
List<Object[]> data;
List<T> exp;
Map<T, T> mExp;
@@ -212,494 +207,136 @@
}
return Collections.unmodifiableList(exp);
}
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testNullPointerException(String description, Collection exp, Supplier<Spliterator> s) {
+ void testNullPointerException(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
executeAndCatch(NullPointerException.class, () -> s.get().forEachRemaining(null));
executeAndCatch(NullPointerException.class, () -> s.get().tryAdvance(null));
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testNullPointerExceptionWithNull(String description, Collection exp, Supplier<Spliterator> s) {
+ void testNullPointerExceptionWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
executeAndCatch(NullPointerException.class, () -> s.get().forEachRemaining(null));
executeAndCatch(NullPointerException.class, () -> s.get().tryAdvance(null));
}
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testForEach(String description, Collection exp, Supplier<Spliterator> s) {
- testForEach(exp, s, (Consumer<Object> b) -> b);
+ void testForEach(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testForEach(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testForEachWithNull(String description, Collection exp, Supplier<Spliterator> s) {
- testForEach(exp, s, (Consumer<Object> b) -> b);
+ void testForEachWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testForEach(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testTryAdvance(String description, Collection exp, Supplier<Spliterator> s) {
- testTryAdvance(exp, s, (Consumer<Object> b) -> b);
+ void testTryAdvance(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testTryAdvance(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testTryAdvanceWithNull(String description, Collection exp, Supplier<Spliterator> s) {
- testTryAdvance(exp, s, (Consumer<Object> b) -> b);
+ void testTryAdvanceWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testTryAdvance(exp, s, UnaryOperator.identity());
}
-/* skip this test until 8013649 is fixed
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testMixedTryAdvanceForEach(String description, Collection exp, Supplier<Spliterator> s) {
- testMixedTryAdvanceForEach(exp, s, (Consumer<Object> b) -> b);
+ void testMixedTryAdvanceForEach(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testMixedTryAdvanceForEach(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testMixedTryAdvanceForEachWithNull(String description, Collection exp, Supplier<Spliterator> s) {
- testMixedTryAdvanceForEach(exp, s, (Consumer<Object> b) -> b);
+ void testMixedTryAdvanceForEachWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testMixedTryAdvanceForEach(exp, s, UnaryOperator.identity());
}
-*/
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitAfterFullTraversal(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitAfterFullTraversal(s, (Consumer<Object> b) -> b);
+ void testMixedTraverseAndSplit(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testMixedTraverseAndSplit(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitAfterFullTraversalWithNull(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitAfterFullTraversal(s, (Consumer<Object> b) -> b);
+ void testMixedTraverseAndSplitWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testMixedTraverseAndSplit(exp, s, UnaryOperator.identity());
}
-
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitOnce(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitOnce(exp, s, (Consumer<Object> b) -> b);
+ void testSplitAfterFullTraversal(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitAfterFullTraversal(s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitOnceWithNull(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitOnce(exp, s, (Consumer<Object> b) -> b);
+ void testSplitAfterFullTraversalWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitAfterFullTraversal(s, UnaryOperator.identity());
}
+
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitSixDeep(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitSixDeep(exp, s, (Consumer<Object> b) -> b);
+ void testSplitOnce(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitOnce(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitSixDeepWithNull(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitSixDeep(exp, s, (Consumer<Object> b) -> b);
+ void testSplitOnceWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitOnce(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliterator")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitUntilNull(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitUntilNull(exp, s, (Consumer<Object> b) -> b);
+ void testSplitSixDeep(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitSixDeep(exp, s, UnaryOperator.identity());
}
@Test(dataProvider = "HashableIntSpliteratorWithNull")
- @SuppressWarnings({"unchecked", "rawtypes"})
- public void testSplitUntilNullWithNull(String description, Collection exp, Supplier<Spliterator> s) {
- testSplitUntilNull(exp, s, (Consumer<Object> b) -> b);
- }
-
- private static <T, S extends Spliterator<T>> void testForEach(
- Collection<T> exp,
- Supplier<S> supplier,
- UnaryOperator<Consumer<T>> boxingAdapter) {
- S spliterator = supplier.get();
- long sizeIfKnown = spliterator.getExactSizeIfKnown();
- boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
-
- ArrayList<T> fromForEach = new ArrayList<>();
- spliterator = supplier.get();
- Consumer<T> addToFromForEach = boxingAdapter.apply(fromForEach::add);
- spliterator.forEachRemaining(addToFromForEach);
-
- // Assert that forEach now produces no elements
- spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e)));
- // Assert that tryAdvance now produce no elements
- spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e)));
-
- // assert that size, tryAdvance, and forEach are consistent
- if (sizeIfKnown >= 0) {
- assertEquals(sizeIfKnown, exp.size());
- }
- if (exp.contains(null)) {
- assertTrue(fromForEach.contains(null));
- }
- assertEquals(fromForEach.size(), exp.size());
-
- assertContents(fromForEach, exp, isOrdered);
- }
-
- private static <T, S extends Spliterator<T>> void testTryAdvance(
- Collection<T> exp,
- Supplier<S> supplier,
- UnaryOperator<Consumer<T>> boxingAdapter) {
- S spliterator = supplier.get();
- long sizeIfKnown = spliterator.getExactSizeIfKnown();
- boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
-
- spliterator = supplier.get();
- ArrayList<T> fromTryAdvance = new ArrayList<>();
- Consumer<T> addToFromTryAdvance = boxingAdapter.apply(fromTryAdvance::add);
- while (spliterator.tryAdvance(addToFromTryAdvance)) { }
-
- // Assert that forEach now produces no elements
- spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e)));
- // Assert that tryAdvance now produce no elements
- spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e)));
-
- // assert that size, tryAdvance, and forEach are consistent
- if (sizeIfKnown >= 0) {
- assertEquals(sizeIfKnown, exp.size());
- }
- assertEquals(fromTryAdvance.size(), exp.size());
-
- assertContents(fromTryAdvance, exp, isOrdered);
- }
-
- private static <T, S extends Spliterator<T>> void testMixedTryAdvanceForEach(
- Collection<T> exp,
- Supplier<S> supplier,
- UnaryOperator<Consumer<T>> boxingAdapter) {
- S spliterator = supplier.get();
- long sizeIfKnown = spliterator.getExactSizeIfKnown();
- boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
-
- // tryAdvance first few elements, then forEach rest
- ArrayList<T> dest = new ArrayList<>();
- spliterator = supplier.get();
- Consumer<T> addToDest = boxingAdapter.apply(dest::add);
- for (int i = 0; i < 10 && spliterator.tryAdvance(addToDest); i++) { }
- spliterator.forEachRemaining(addToDest);
-
- // Assert that forEach now produces no elements
- spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e)));
- // Assert that tryAdvance now produce no elements
- spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e)));
-
- if (sizeIfKnown >= 0) {
- assertEquals(sizeIfKnown, dest.size());
- }
- assertEquals(dest.size(), exp.size());
-
- if (isOrdered) {
- assertEquals(dest, exp);
- }
- else {
- assertContentsUnordered(dest, exp);
- }
- }
-
- private static <T, S extends Spliterator<T>> void testSplitAfterFullTraversal(
- Supplier<S> supplier,
- UnaryOperator<Consumer<T>> boxingAdapter) {
- // Full traversal using tryAdvance
- Spliterator<T> spliterator = supplier.get();
- while (spliterator.tryAdvance(boxingAdapter.apply(e -> { }))) { }
- Spliterator<T> split = spliterator.trySplit();
- assertNull(split);
-
- // Full traversal using forEach
- spliterator = supplier.get();
- spliterator.forEachRemaining(boxingAdapter.apply(e -> {
- }));
- split = spliterator.trySplit();
- assertNull(split);
-
- // Full traversal using tryAdvance then forEach
- spliterator = supplier.get();
- spliterator.tryAdvance(boxingAdapter.apply(e -> { }));
- spliterator.forEachRemaining(boxingAdapter.apply(e -> {
- }));
- split = spliterator.trySplit();
- assertNull(split);
- }
-
- private static <T, S extends Spliterator<T>> void testSplitOnce(
- Collection<T> exp,
- Supplier<S> supplier,
- UnaryOperator<Consumer<T>> boxingAdapter) {
- S spliterator = supplier.get();
- long sizeIfKnown = spliterator.getExactSizeIfKnown();
- boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
-
- ArrayList<T> fromSplit = new ArrayList<>();
- Spliterator<T> s1 = supplier.get();
- Spliterator<T> s2 = s1.trySplit();
- long s1Size = s1.getExactSizeIfKnown();
- long s2Size = (s2 != null) ? s2.getExactSizeIfKnown() : 0;
-
- Consumer<T> addToFromSplit = boxingAdapter.apply(fromSplit::add);
- if (s2 != null)
- s2.forEachRemaining(addToFromSplit);
- s1.forEachRemaining(addToFromSplit);
-
- if (sizeIfKnown >= 0) {
- assertEquals(sizeIfKnown, fromSplit.size());
- if (s1Size >= 0 && s2Size >= 0)
- assertEquals(sizeIfKnown, s1Size + s2Size);
- }
- assertContents(fromSplit, exp, isOrdered);
- }
-
- private static <T, S extends Spliterator<T>> void testSplitSixDeep(
- Collection<T> exp,
- Supplier<S> supplier,
- UnaryOperator<Consumer<T>> boxingAdapter) {
- S spliterator = supplier.get();
- boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED);
-
- for (int depth=0; depth < 6; depth++) {
- List<T> dest = new ArrayList<>();
- spliterator = supplier.get();
-
- assertSpliterator(spliterator);
-
- // verify splitting with forEach
- visit(depth, 0, dest, spliterator, boxingAdapter, spliterator.characteristics(), false);
- assertContents(dest, exp, isOrdered);
-
- // verify splitting with tryAdvance
- dest.clear();
- spliterator = supplier.get();
- visit(depth, 0, dest, spliterator, boxingAdapter, spliterator.characteristics(), true);
- assertContents(dest, exp, isOrdered);
- }
- }
-
- private static <T, S extends Spliterator<T>> void visit(int depth, int curLevel,
- List<T> dest, S spliterator, UnaryOperator<Consumer<T>> boxingAdapter,
- int rootCharacteristics, boolean useTryAdvance) {
- if (curLevel < depth) {
- long beforeSize = spliterator.getExactSizeIfKnown();
- Spliterator<T> split = spliterator.trySplit();
- if (split != null) {
- assertSpliterator(split, rootCharacteristics);
- assertSpliterator(spliterator, rootCharacteristics);
-
- if ((rootCharacteristics & Spliterator.SUBSIZED) != 0 &&
- (rootCharacteristics & Spliterator.SIZED) != 0) {
- assertEquals(beforeSize, split.estimateSize() + spliterator.estimateSize());
- }
- visit(depth, curLevel + 1, dest, split, boxingAdapter, rootCharacteristics, useTryAdvance);
- }
- visit(depth, curLevel + 1, dest, spliterator, boxingAdapter, rootCharacteristics, useTryAdvance);
- }
- else {
- long sizeIfKnown = spliterator.getExactSizeIfKnown();
- if (useTryAdvance) {
- Consumer<T> addToDest = boxingAdapter.apply(dest::add);
- int count = 0;
- while (spliterator.tryAdvance(addToDest)) {
- ++count;
- }
-
- if (sizeIfKnown >= 0)
- assertEquals(sizeIfKnown, count);
-
- // Assert that forEach now produces no elements
- spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e)));
-
- Spliterator<T> split = spliterator.trySplit();
- assertNull(split);
- }
- else {
- List<T> leafDest = new ArrayList<>();
- Consumer<T> addToLeafDest = boxingAdapter.apply(leafDest::add);
- spliterator.forEachRemaining(addToLeafDest);
-
- if (sizeIfKnown >= 0)
- assertEquals(sizeIfKnown, leafDest.size());
-
- // Assert that forEach now produces no elements
- spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e)));
-
- Spliterator<T> split = spliterator.trySplit();
- assertNull(split);
-
- dest.addAll(leafDest);
- }
- }
- }
-
- private static <T, S extends Spliterator<T>> void testSplitUntilNull(
- Collection<T> exp,
- Supplier<S> supplier,
- UnaryOperator<Consumer<T>> boxingAdapter) {
- Spliterator<T> s = supplier.get();
- boolean isOrdered = s.hasCharacteristics(Spliterator.ORDERED);
- assertSpliterator(s);
-
- List<T> splits = new ArrayList<>();
- Consumer<T> c = boxingAdapter.apply(splits::add);
-
- testSplitUntilNull(new SplitNode<T>(c, s));
- assertContents(splits, exp, isOrdered);
- }
-
- private static class SplitNode<T> {
- // Constant for every node
- final Consumer<T> c;
- final int rootCharacteristics;
-
- final Spliterator<T> s;
-
- SplitNode(Consumer<T> c, Spliterator<T> s) {
- this(c, s.characteristics(), s);
+ void testSplitSixDeepWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitSixDeep(exp, s, UnaryOperator.identity());
}
- private SplitNode(Consumer<T> c, int rootCharacteristics, Spliterator<T> s) {
- this.c = c;
- this.rootCharacteristics = rootCharacteristics;
- this.s = s;
- }
-
- SplitNode<T> fromSplit(Spliterator<T> split) {
- return new SplitNode<>(c, rootCharacteristics, split);
- }
- }
-
- /**
- * Set the maximum stack capacity to 0.25MB. This should be more than enough to detect a bad spliterator
- * while not unduly disrupting test infrastructure given the test data sizes that are used are small.
- * Note that j.u.c.ForkJoinPool sets the max queue size to 64M (1 << 26).
- */
- private static final int MAXIMUM_STACK_CAPACITY = 1 << 18; // 0.25MB
-
- private static <T> void testSplitUntilNull(SplitNode<T> e) {
- // Use an explicit stack to avoid a StackOverflowException when testing a Spliterator
- // that when repeatedly split produces a right-balanced (and maybe degenerate) tree, or
- // for a spliterator that is badly behaved.
- Deque<SplitNode<T>> stack = new ArrayDeque<>();
- stack.push(e);
-
- int iteration = 0;
- while (!stack.isEmpty()) {
- assertTrue(iteration++ < MAXIMUM_STACK_CAPACITY, "Exceeded maximum stack modification count of 1 << 18");
-
- e = stack.pop();
- Spliterator<T> parentAndRightSplit = e.s;
-
- long parentEstimateSize = parentAndRightSplit.estimateSize();
- assertTrue(parentEstimateSize >= 0,
- String.format("Split size estimate %d < 0", parentEstimateSize));
-
- long parentSize = parentAndRightSplit.getExactSizeIfKnown();
- Spliterator<T> leftSplit = parentAndRightSplit.trySplit();
- if (leftSplit == null) {
- parentAndRightSplit.forEachRemaining(e.c);
- continue;
- }
-
- assertSpliterator(leftSplit, e.rootCharacteristics);
- assertSpliterator(parentAndRightSplit, e.rootCharacteristics);
-
- if (parentEstimateSize != Long.MAX_VALUE && leftSplit.estimateSize() > 0 && parentAndRightSplit.estimateSize() > 0) {
- assertTrue(leftSplit.estimateSize() < parentEstimateSize,
- String.format("Left split size estimate %d >= parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
- assertTrue(parentAndRightSplit.estimateSize() < parentEstimateSize,
- String.format("Right split size estimate %d >= parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
- }
- else {
- assertTrue(leftSplit.estimateSize() <= parentEstimateSize,
- String.format("Left split size estimate %d > parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
- assertTrue(parentAndRightSplit.estimateSize() <= parentEstimateSize,
- String.format("Right split size estimate %d > parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize));
- }
-
- long leftSize = leftSplit.getExactSizeIfKnown();
- long rightSize = parentAndRightSplit.getExactSizeIfKnown();
- if (parentSize >= 0 && leftSize >= 0 && rightSize >= 0)
- assertEquals(parentSize, leftSize + rightSize,
- String.format("exact left split size %d + exact right split size %d != parent exact split size %d",
- leftSize, rightSize, parentSize));
-
- // Add right side to stack first so left side is popped off first
- stack.push(e.fromSplit(parentAndRightSplit));
- stack.push(e.fromSplit(leftSplit));
- }
- }
-
- private static void assertSpliterator(Spliterator<?> s, int rootCharacteristics) {
- if ((rootCharacteristics & Spliterator.SUBSIZED) != 0) {
- assertTrue(s.hasCharacteristics(Spliterator.SUBSIZED),
- "Child split is not SUBSIZED when root split is SUBSIZED");
- }
- assertSpliterator(s);
- }
-
- private static void assertSpliterator(Spliterator<?> s) {
- if (s.hasCharacteristics(Spliterator.SUBSIZED)) {
- assertTrue(s.hasCharacteristics(Spliterator.SIZED));
- }
- if (s.hasCharacteristics(Spliterator.SIZED)) {
- assertTrue(s.estimateSize() != Long.MAX_VALUE);
- assertTrue(s.getExactSizeIfKnown() >= 0);
- }
- try {
- s.getComparator();
- assertTrue(s.hasCharacteristics(Spliterator.SORTED));
- } catch (IllegalStateException e) {
- assertFalse(s.hasCharacteristics(Spliterator.SORTED));
- }
- }
-
- private static<T> void assertContents(Collection<T> actual, Collection<T> expected, boolean isOrdered) {
- if (isOrdered) {
- assertEquals(actual, expected);
- }
- else {
- assertContentsUnordered(actual, expected);
- }
- }
-
- private static<T> void assertContentsUnordered(Iterable<T> actual, Iterable<T> expected) {
- assertEquals(toBoxedMultiset(actual), toBoxedMultiset(expected));
- }
-
- private static <T> Map<T, HashableInteger> toBoxedMultiset(Iterable<T> c) {
- Map<T, HashableInteger> result = new HashMap<>();
- c.forEach(e -> {
- if (result.containsKey(e)) {
- result.put(e, new HashableInteger(result.get(e).value + 1, 10));
- } else {
- result.put(e, new HashableInteger(1, 10));
- }
- });
- return result;
- }
-
- private void executeAndCatch(Class<? extends Exception> expected, Runnable r) {
- Exception caught = null;
- try {
- r.run();
- }
- catch (Exception e) {
- caught = e;
+ @Test(dataProvider = "HashableIntSpliterator")
+ void testSplitUntilNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitUntilNull(exp, s, UnaryOperator.identity());
}
- assertNotNull(caught,
- String.format("No Exception was thrown, expected an Exception of %s to be thrown",
- expected.getName()));
- assertTrue(expected.isInstance(caught),
- String.format("Exception thrown %s not an instance of %s",
- caught.getClass().getName(), expected.getName()));
+ @Test(dataProvider = "HashableIntSpliteratorWithNull")
+ void testSplitUntilNullWithNull(String description,
+ Collection<HashableInteger> exp,
+ Supplier<Spliterator<HashableInteger>> s) {
+ testSplitUntilNull(exp, s, UnaryOperator.identity());
}
}
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