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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) 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.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.HashMultiset;
import com.google.common.collect.Multiset;
import com.google.common.collect.Multisets;
import com.google.common.collect.testing.features.CollectionSize;
/**
* A generic JUnit test which tests multiset-specific read operations.
* Can't be invoked directly; please see
* {@link com.google.common.collect.testing.SetTestSuiteBuilder}.
*
* @author Jared Levy
*/
@GwtCompatible
public class MultisetReadsTester extends AbstractMultisetTester {
@CollectionSize.Require(absent = ZERO)
public void testElementSet_contains() {
assertTrue("multiset.elementSet().contains(present) returned false",
getMultiset().elementSet().contains(samples.e0));
}
@CollectionSize.Require(absent = ZERO)
public void testEntrySet_contains() {
assertTrue("multiset.entrySet() didn't contain [present, 1]",
getMultiset().entrySet().contains(
Multisets.immutableEntry(samples.e0, 1)));
}
public void testEntrySet_contains_count0() {
assertFalse("multiset.entrySet() contains [missing, 0]",
getMultiset().entrySet().contains(
Multisets.immutableEntry(samples.e3, 0)));
}
public void testEntrySet_contains_nonentry() {
assertFalse("multiset.entrySet() contains a non-entry",
getMultiset().entrySet().contains(samples.e0));
}
public void testEntrySet_twice() {
assertEquals("calling multiset.entrySet() twice returned unequal sets",
getMultiset().entrySet(), getMultiset().entrySet());
}
@CollectionSize.Require(ZERO)
public void testEntrySet_hashCode_size0() {
assertEquals("multiset.entrySet() has incorrect hash code",
0, getMultiset().entrySet().hashCode());
}
@CollectionSize.Require(ONE)
public void testEntrySet_hashCode_size1() {
assertEquals("multiset.entrySet() has incorrect hash code",
1 ^ samples.e0.hashCode(), getMultiset().entrySet().hashCode());
}
public void testEquals_yes() {
assertTrue("multiset doesn't equal a multiset with the same elements",
getMultiset().equals(HashMultiset.create(getSampleElements())));
}
public void testEquals_differentSize() {
Multiset other = HashMultiset.create(getSampleElements());
other.add(samples.e0);
assertFalse("multiset equals a multiset with a different size",
getMultiset().equals(other));
}
@CollectionSize.Require(absent = ZERO)
public void testEquals_differentElements() {
Multiset other = HashMultiset.create(getSampleElements());
other.remove(samples.e0);
other.add(samples.e3);
assertFalse("multiset equals a multiset with different elements",
getMultiset().equals(other));
}
@CollectionSize.Require(ZERO)
public void testHashCode_size0() {
assertEquals("multiset has incorrect hash code",
0, getMultiset().hashCode());
}
@CollectionSize.Require(ONE)
public void testHashCode_size1() {
assertEquals("multiset has incorrect hash code",
1 ^ samples.e0.hashCode(), getMultiset().hashCode());
}
}