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/*
* Copyright (C) 2007 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.testers;
import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_QUERIES;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
import com.google.common.collect.testing.AbstractMapTester;
import com.google.common.collect.testing.WrongType;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
/**
* A generic JUnit test which tests {@code get} operations on a map. Can't be
* invoked directly; please see
* {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
*
* <p>This class is GWT compatible.
*
* @author Kevin Bourrillion
* @author Chris Povirk
*/
public class MapGetTester<K, V> extends AbstractMapTester<K, V> {
@CollectionSize.Require(absent = ZERO)
public void testGet_yes() {
assertEquals("get(present) should return the associated value",
samples.e0.getValue(), get(samples.e0.getKey()));
}
public void testGet_no() {
assertNull("get(notPresent) should return null", get(samples.e3.getKey()));
}
@CollectionFeature.Require(ALLOWS_NULL_QUERIES)
public void testGet_nullNotContainedButAllowed() {
assertNull("get(null) should return null", get(null));
}
@CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
public void testGet_nullNotContainedAndUnsupported() {
try {
assertNull("get(null) should return null or throw", get(null));
} catch (NullPointerException tolerated) {
}
}
@MapFeature.Require(ALLOWS_NULL_KEYS)
@CollectionSize.Require(absent = ZERO)
public void testGet_nonNullWhenNullContained() {
initMapWithNullKey();
assertNull("get(notPresent) should return null", get(samples.e3.getKey()));
}
@MapFeature.Require(ALLOWS_NULL_KEYS)
@CollectionSize.Require(absent = ZERO)
public void testGet_nullContained() {
initMapWithNullKey();
assertEquals("get(null) should return the associated value",
getValueForNullKey(), get(null));
}
public void testGet_wrongType() {
try {
assertNull("get(wrongType) should return null or throw",
getMap().get(WrongType.VALUE));
} catch (ClassCastException tolerated) {
}
}
}
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