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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.
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/*
* Copyright (C) 2013 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 com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.features.CollectionFeature;
import java.util.Arrays;
import java.util.Collections;
/**
* Tests for {@code Multiset.add}.
*
* @author Jared Levy
*/
@GwtCompatible
public class MultisetAddTester extends AbstractMultisetTester {
@CollectionFeature.Require(absent = SUPPORTS_ADD)
public void testAddUnsupported() {
try {
getMultiset().add(samples.e0);
fail("Expected UnsupportedOperationException");
} catch (UnsupportedOperationException expected) {}
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddMeansAddOne() {
int originalCount = getMultiset().count(samples.e0);
assertTrue(getMultiset().add(samples.e0));
assertEquals(originalCount + 1, getMultiset().count(samples.e0));
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddOccurrencesZero() {
int originalCount = getMultiset().count(samples.e0);
assertEquals("old count", originalCount, getMultiset().add(samples.e0, 0));
expectUnchanged();
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddOccurrences() {
int originalCount = getMultiset().count(samples.e0);
assertEquals("old count", originalCount, getMultiset().add(samples.e0, 2));
assertEquals("old count", originalCount + 2, getMultiset().count(samples.e0));
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddSeveralTimes() {
int originalCount = getMultiset().count(samples.e0);
assertEquals(originalCount, getMultiset().add(samples.e0, 2));
assertTrue(getMultiset().add(samples.e0));
assertEquals(originalCount + 3, getMultiset().add(samples.e0, 1));
assertEquals(originalCount + 4, getMultiset().count(samples.e0));
}
@CollectionFeature.Require(absent = SUPPORTS_ADD)
public void testAddOccurrences_unsupported() {
try {
getMultiset().add(samples.e0, 2);
fail("unsupported multiset.add(E, int) didn't throw exception");
} catch (UnsupportedOperationException required) {}
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddOccurrencesNegative() {
try {
getMultiset().add(samples.e0, -1);
fail("multiset.add(E, -1) didn't throw an exception");
} catch (IllegalArgumentException required) {}
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddTooMany() {
getMultiset().add(samples.e3, Integer.MAX_VALUE);
try {
getMultiset().add(samples.e3);
fail();
} catch (IllegalArgumentException expected) {}
assertEquals(Integer.MAX_VALUE, getMultiset().count(samples.e3));
assertEquals(Integer.MAX_VALUE, getMultiset().size());
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddAll_emptySet() {
assertFalse(getMultiset().addAll(Collections.emptySet()));
expectUnchanged();
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddAll_emptyMultiset() {
assertFalse(getMultiset().addAll(getSubjectGenerator().create()));
expectUnchanged();
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddAll_nonEmptyList() {
assertTrue(getMultiset().addAll(Arrays.asList(samples.e3, samples.e4, samples.e3)));
expectAdded(samples.e3, samples.e4, samples.e3);
}
@CollectionFeature.Require(SUPPORTS_ADD)
public void testAddAll_nonEmptyMultiset() {
assertTrue(getMultiset().addAll(
getSubjectGenerator().create(samples.e3, samples.e4, samples.e3)));
expectAdded(samples.e3, samples.e4, samples.e3);
}
}