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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) 2008 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.google;
import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD;
import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ITERATOR_REMOVE;
import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE;
import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import static com.google.common.collect.testing.google.MultisetFeature.ENTRIES_ARE_VIEWS;
import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.Iterables;
import com.google.common.collect.Multiset;
import com.google.common.collect.Multisets;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import java.util.Collections;
import java.util.Iterator;
import org.junit.Ignore;
/**
* Tests for {@code Multiset.entrySet}.
*
* @author Jared Levy
*/
@GwtCompatible
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
public class MultisetEntrySetTester extends AbstractMultisetTester {
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testEntrySet_clear() {
getMultiset().entrySet().clear();
assertTrue("multiset not empty after entrySet().clear()", getMultiset().isEmpty());
}
@CollectionSize.Require(ONE)
@CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
public void testEntrySet_iteratorRemovePropagates() {
Iterator> iterator = getMultiset().entrySet().iterator();
assertTrue(
"non-empty multiset.entrySet() iterator.hasNext() returned false", iterator.hasNext());
assertEquals(
"multiset.entrySet() iterator.next() returned incorrect entry",
Multisets.immutableEntry(e0(), 1),
iterator.next());
assertFalse(
"size 1 multiset.entrySet() iterator.hasNext() returned true after next()",
iterator.hasNext());
iterator.remove();
assertTrue(
"multiset isn't empty after multiset.entrySet() iterator.remove()",
getMultiset().isEmpty());
}
@CollectionSize.Require(absent = ZERO)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testEntrySet_removePresent() {
assertTrue(
"multiset.entrySet.remove(presentEntry) returned false",
getMultiset().entrySet().remove(Multisets.immutableEntry(e0(), 1)));
assertFalse("multiset contains element after removing its entry", getMultiset().contains(e0()));
}
@CollectionSize.Require(absent = ZERO)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testEntrySet_removeAbsent() {
assertFalse(
"multiset.entrySet.remove(missingEntry) returned true",
getMultiset().entrySet().remove(Multisets.immutableEntry(e0(), 2)));
assertTrue(
"multiset didn't contain element after removing a missing entry",
getMultiset().contains(e0()));
}
@CollectionSize.Require(absent = ZERO)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testEntrySet_removeAllPresent() {
assertTrue(
"multiset.entrySet.removeAll(presentEntry) returned false",
getMultiset()
.entrySet()
.removeAll(Collections.singleton(Multisets.immutableEntry(e0(), 1))));
assertFalse("multiset contains element after removing its entry", getMultiset().contains(e0()));
}
@CollectionSize.Require(absent = ZERO)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testEntrySet_removeAllAbsent() {
assertFalse(
"multiset.entrySet.remove(missingEntry) returned true",
getMultiset()
.entrySet()
.removeAll(Collections.singleton(Multisets.immutableEntry(e0(), 2))));
assertTrue(
"multiset didn't contain element after removing a missing entry",
getMultiset().contains(e0()));
}
@CollectionSize.Require(ONE)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testEntrySet_retainAllPresent() {
assertFalse(
"multiset.entrySet.retainAll(presentEntry) returned false",
getMultiset()
.entrySet()
.retainAll(Collections.singleton(Multisets.immutableEntry(e0(), 1))));
assertTrue(
"multiset doesn't contains element after retaining its entry",
getMultiset().contains(e0()));
}
@CollectionSize.Require(ONE)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testEntrySet_retainAllAbsent() {
assertTrue(
"multiset.entrySet.retainAll(missingEntry) returned true",
getMultiset()
.entrySet()
.retainAll(Collections.singleton(Multisets.immutableEntry(e0(), 2))));
assertFalse(
"multiset contains element after retaining a different entry",
getMultiset().contains(e0()));
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_REMOVE)
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryViewReflectsRemove() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Multiset.Entry entry = Iterables.getOnlyElement(getMultiset().entrySet());
assertEquals(3, entry.getCount());
assertTrue(getMultiset().remove(e0()));
assertEquals(2, entry.getCount());
assertTrue(getMultiset().elementSet().remove(e0()));
assertEquals(0, entry.getCount());
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryReflectsIteratorRemove() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Multiset.Entry entry = Iterables.getOnlyElement(getMultiset().entrySet());
assertEquals(3, entry.getCount());
Iterator itr = getMultiset().iterator();
itr.next();
itr.remove();
assertEquals(2, entry.getCount());
itr.next();
itr.remove();
itr.next();
itr.remove();
assertEquals(0, entry.getCount());
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_REMOVE)
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryReflectsClear() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Multiset.Entry entry = Iterables.getOnlyElement(getMultiset().entrySet());
assertEquals(3, entry.getCount());
getMultiset().clear();
assertEquals(0, entry.getCount());
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_REMOVE)
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryReflectsEntrySetClear() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Multiset.Entry entry = Iterables.getOnlyElement(getMultiset().entrySet());
assertEquals(3, entry.getCount());
getMultiset().entrySet().clear();
assertEquals(0, entry.getCount());
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryReflectsEntrySetIteratorRemove() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Iterator> entryItr = getMultiset().entrySet().iterator();
Multiset.Entry entry = entryItr.next();
entryItr.remove();
assertEquals(0, entry.getCount());
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_REMOVE)
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryReflectsElementSetClear() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Multiset.Entry entry = Iterables.getOnlyElement(getMultiset().entrySet());
assertEquals(3, entry.getCount());
getMultiset().elementSet().clear();
assertEquals(0, entry.getCount());
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryReflectsElementSetIteratorRemove() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Multiset.Entry entry = Iterables.getOnlyElement(getMultiset().entrySet());
assertEquals(3, entry.getCount());
Iterator elementItr = getMultiset().elementSet().iterator();
elementItr.next();
elementItr.remove();
assertEquals(0, entry.getCount());
}
@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require({SUPPORTS_REMOVE, SUPPORTS_ADD})
@MultisetFeature.Require(ENTRIES_ARE_VIEWS)
public void testEntryReflectsRemoveThenAdd() {
initThreeCopies();
assertEquals(3, getMultiset().count(e0()));
Multiset.Entry entry = Iterables.getOnlyElement(getMultiset().entrySet());
assertEquals(3, entry.getCount());
assertTrue(getMultiset().remove(e0()));
assertEquals(2, entry.getCount());
assertTrue(getMultiset().elementSet().remove(e0()));
assertEquals(0, entry.getCount());
getMultiset().add(e0(), 2);
assertEquals(2, entry.getCount());
}
public void testToString() {
assertEquals(getMultiset().entrySet().toString(), getMultiset().toString());
}
}