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Guava testlib is a set of java classes used for more convenient
unit testing - particularly to assist the tests for Guava itself.
/*
* Copyright (C) 2009 The Guava Authors
*
* 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.google.common.collect.testing;
import static com.google.common.collect.testing.testers.CollectionSpliteratorTester.getSpliteratorNotImmutableCollectionAllowsAddMethod;
import static com.google.common.collect.testing.testers.CollectionSpliteratorTester.getSpliteratorNotImmutableCollectionAllowsRemoveMethod;
import static java.util.Arrays.asList;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.SetFeature;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.AbstractSet;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumSet;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.NavigableSet;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentSkipListSet;
import java.util.concurrent.CopyOnWriteArraySet;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Generates a test suite covering the {@link Set} implementations in the {@link java.util} package.
* Can be subclassed to specify tests that should be suppressed.
*
* @author Kevin Bourrillion
*/
@GwtIncompatible
public class TestsForSetsInJavaUtil {
public static Test suite() {
return new TestsForSetsInJavaUtil().allTests();
}
public Test allTests() {
TestSuite suite = new TestSuite("java.util Sets");
suite.addTest(testsForCheckedNavigableSet());
suite.addTest(testsForEmptySet());
suite.addTest(testsForEmptyNavigableSet());
suite.addTest(testsForEmptySortedSet());
suite.addTest(testsForSingletonSet());
suite.addTest(testsForHashSet());
suite.addTest(testsForLinkedHashSet());
suite.addTest(testsForEnumSet());
suite.addTest(testsForSynchronizedNavigableSet());
suite.addTest(testsForTreeSetNatural());
suite.addTest(testsForTreeSetWithComparator());
suite.addTest(testsForCopyOnWriteArraySet());
suite.addTest(testsForUnmodifiableSet());
suite.addTest(testsForUnmodifiableNavigableSet());
suite.addTest(testsForCheckedSet());
suite.addTest(testsForCheckedSortedSet());
suite.addTest(testsForAbstractSet());
suite.addTest(testsForBadlyCollidingHashSet());
suite.addTest(testsForConcurrentSkipListSetNatural());
suite.addTest(testsForConcurrentSkipListSetWithComparator());
return suite;
}
protected Collection suppressForCheckedNavigableSet() {
return Collections.emptySet();
}
protected Collection suppressForEmptySet() {
return Collections.emptySet();
}
protected Collection suppressForEmptyNavigableSet() {
return Collections.emptySet();
}
protected Collection suppressForEmptySortedSet() {
return Collections.emptySet();
}
protected Collection suppressForSingletonSet() {
return Collections.emptySet();
}
protected Collection suppressForHashSet() {
return Collections.emptySet();
}
protected Collection suppressForLinkedHashSet() {
return Collections.emptySet();
}
protected Collection suppressForEnumSet() {
return Collections.emptySet();
}
protected Collection suppressForSynchronizedNavigableSet() {
return Collections.emptySet();
}
protected Collection suppressForTreeSetNatural() {
return Collections.emptySet();
}
protected Collection suppressForTreeSetWithComparator() {
return Collections.emptySet();
}
protected Collection suppressForCopyOnWriteArraySet() {
return asList(
getSpliteratorNotImmutableCollectionAllowsAddMethod(),
getSpliteratorNotImmutableCollectionAllowsRemoveMethod());
}
protected Collection suppressForUnmodifiableSet() {
return Collections.emptySet();
}
protected Collection suppressForUnmodifiableNavigableSet() {
return Collections.emptySet();
}
protected Collection suppressForCheckedSet() {
return Collections.emptySet();
}
protected Collection suppressForCheckedSortedSet() {
return Collections.emptySet();
}
protected Collection suppressForAbstractSet() {
return Collections.emptySet();
}
protected Collection suppressForConcurrentSkipListSetNatural() {
return Collections.emptySet();
}
protected Collection suppressForConcurrentSkipListSetWithComparator() {
return Collections.emptySet();
}
public Test testsForCheckedNavigableSet() {
return SortedSetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public NavigableSet create(String[] elements) {
NavigableSet innerSet = new TreeSet<>();
Collections.addAll(innerSet, elements);
return Collections.checkedNavigableSet(innerSet, String.class);
}
})
.named("checkedNavigableSet/TreeSet, natural")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.SERIALIZABLE,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionFeature.RESTRICTS_ELEMENTS,
CollectionSize.ANY)
.suppressing(suppressForCheckedNavigableSet())
.createTestSuite();
}
public Test testsForEmptySet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
public Set create(String[] elements) {
return Collections.emptySet();
}
})
.named("emptySet")
.withFeatures(CollectionFeature.SERIALIZABLE, CollectionSize.ZERO)
.suppressing(suppressForEmptySet())
.createTestSuite();
}
public Test testsForEmptyNavigableSet() {
return SetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public NavigableSet create(String[] elements) {
return Collections.emptyNavigableSet();
}
})
.named("emptyNavigableSet")
.withFeatures(CollectionFeature.SERIALIZABLE, CollectionSize.ZERO)
.suppressing(suppressForEmptyNavigableSet())
.createTestSuite();
}
public Test testsForEmptySortedSet() {
return SetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public SortedSet create(String[] elements) {
return Collections.emptySortedSet();
}
})
.named("emptySortedSet")
.withFeatures(CollectionFeature.SERIALIZABLE, CollectionSize.ZERO)
.suppressing(suppressForEmptySortedSet())
.createTestSuite();
}
public Test testsForSingletonSet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
public Set create(String[] elements) {
return Collections.singleton(elements[0]);
}
})
.named("singleton")
.withFeatures(
CollectionFeature.SERIALIZABLE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionSize.ONE)
.suppressing(suppressForSingletonSet())
.createTestSuite();
}
public Test testsForHashSet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
public Set create(String[] elements) {
return new HashSet<>(MinimalCollection.of(elements));
}
})
.named("HashSet")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionSize.ANY)
.suppressing(suppressForHashSet())
.createTestSuite();
}
public Test testsForLinkedHashSet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
public Set create(String[] elements) {
return new LinkedHashSet<>(MinimalCollection.of(elements));
}
})
.named("LinkedHashSet")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionSize.ANY)
.suppressing(suppressForLinkedHashSet())
.createTestSuite();
}
public Test testsForEnumSet() {
return SetTestSuiteBuilder.using(
new TestEnumSetGenerator() {
@Override
public Set create(AnEnum[] elements) {
return (elements.length == 0)
? EnumSet.noneOf(AnEnum.class)
: EnumSet.copyOf(MinimalCollection.of(elements));
}
})
.named("EnumSet")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.RESTRICTS_ELEMENTS,
CollectionSize.ANY)
.suppressing(suppressForEnumSet())
.createTestSuite();
}
/**
* Tests regular NavigableSet behavior of synchronizedNavigableSet(treeSet); does not test the
* fact that it's synchronized.
*/
public Test testsForSynchronizedNavigableSet() {
return NavigableSetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public SortedSet create(String[] elements) {
NavigableSet delegate = new TreeSet<>(MinimalCollection.of(elements));
return Collections.synchronizedNavigableSet(delegate);
}
})
.named("synchronizedNavigableSet/TreeSet, natural")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionSize.ANY)
.suppressing(suppressForSynchronizedNavigableSet())
.createTestSuite();
}
public Test testsForTreeSetNatural() {
return NavigableSetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public SortedSet create(String[] elements) {
return new TreeSet<>(MinimalCollection.of(elements));
}
})
.named("TreeSet, natural")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionSize.ANY)
.suppressing(suppressForTreeSetNatural())
.createTestSuite();
}
public Test testsForTreeSetWithComparator() {
return NavigableSetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public SortedSet create(String[] elements) {
SortedSet set = new TreeSet<>(arbitraryNullFriendlyComparator());
Collections.addAll(set, elements);
return set;
}
})
.named("TreeSet, with comparator")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionSize.ANY)
.suppressing(suppressForTreeSetWithComparator())
.createTestSuite();
}
public Test testsForCopyOnWriteArraySet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
public Set create(String[] elements) {
return new CopyOnWriteArraySet<>(MinimalCollection.of(elements));
}
})
.named("CopyOnWriteArraySet")
.withFeatures(
CollectionFeature.SUPPORTS_ADD,
CollectionFeature.SUPPORTS_REMOVE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.KNOWN_ORDER,
CollectionSize.ANY)
.suppressing(suppressForCopyOnWriteArraySet())
.createTestSuite();
}
public Test testsForUnmodifiableSet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
public Set create(String[] elements) {
Set innerSet = new HashSet<>();
Collections.addAll(innerSet, elements);
return Collections.unmodifiableSet(innerSet);
}
})
.named("unmodifiableSet/HashSet")
.withFeatures(
CollectionFeature.NONE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionSize.ANY)
.suppressing(suppressForUnmodifiableSet())
.createTestSuite();
}
public Test testsForUnmodifiableNavigableSet() {
return SetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public NavigableSet create(String[] elements) {
NavigableSet innerSet = new TreeSet<>();
Collections.addAll(innerSet, elements);
return Collections.unmodifiableNavigableSet(innerSet);
}
})
.named("unmodifiableNavigableSet/TreeSet, natural")
.withFeatures(
CollectionFeature.KNOWN_ORDER,
CollectionFeature.RESTRICTS_ELEMENTS,
CollectionFeature.SERIALIZABLE,
CollectionSize.ANY)
.suppressing(suppressForUnmodifiableNavigableSet())
.createTestSuite();
}
public Test testsForCheckedSet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
public Set create(String[] elements) {
Set innerSet = new HashSet<>();
Collections.addAll(innerSet, elements);
return Collections.checkedSet(innerSet, String.class);
}
})
.named("checkedSet/HashSet")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.SERIALIZABLE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.RESTRICTS_ELEMENTS,
CollectionSize.ANY)
.suppressing(suppressForCheckedSet())
.createTestSuite();
}
public Test testsForCheckedSortedSet() {
return SortedSetTestSuiteBuilder.using(
new TestStringSortedSetGenerator() {
@Override
public SortedSet create(String[] elements) {
SortedSet innerSet = new TreeSet<>();
Collections.addAll(innerSet, elements);
return Collections.checkedSortedSet(innerSet, String.class);
}
})
.named("checkedSortedSet/TreeSet, natural")
.withFeatures(
SetFeature.GENERAL_PURPOSE,
CollectionFeature.KNOWN_ORDER,
CollectionFeature.SERIALIZABLE,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionFeature.RESTRICTS_ELEMENTS,
CollectionSize.ANY)
.suppressing(suppressForCheckedSortedSet())
.createTestSuite();
}
public Test testsForAbstractSet() {
return SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
protected Set create(String[] elements) {
final String[] deduped = dedupe(elements);
return new AbstractSet() {
@Override
public int size() {
return deduped.length;
}
@Override
public Iterator iterator() {
return MinimalCollection.of(deduped).iterator();
}
};
}
})
.named("AbstractSet")
.withFeatures(
CollectionFeature.NONE,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.KNOWN_ORDER, // in this case, anyway
CollectionSize.ANY)
.suppressing(suppressForAbstractSet())
.createTestSuite();
}
public Test testsForBadlyCollidingHashSet() {
return SetTestSuiteBuilder.using(
new TestCollidingSetGenerator() {
@Override
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