Java

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/*
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 * Copyright (C) 2015 The Guava Authors
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 * http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.google.common.collect.testing.testers;
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import static com.google.common.collect.testing.features.CollectionSize.ZERO;
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import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
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import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES;
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import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
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import com.google.common.annotations.GwtCompatible;
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import com.google.common.collect.testing.AbstractMapTester;
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import com.google.common.collect.testing.WrongType;
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import com.google.common.collect.testing.features.CollectionSize;
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import com.google.common.collect.testing.features.MapFeature;
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import java.util.Map;
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import org.junit.Ignore;
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/**
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 * A generic JUnit test which tests {@link Map#getOrDefault}. Can't be invoked directly; please see
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 * {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
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 *
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 * @author Louis Wasserman
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 */
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@GwtCompatible
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@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
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@SuppressWarnings("JUnit4ClassUsedInJUnit3")
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public class MapGetOrDefaultTester<K, V> extends AbstractMapTester<K, V> {
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  @CollectionSize.Require(absent = ZERO)
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  public void testGetOrDefault_present() {
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    assertEquals(
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        "getOrDefault(present, def) should return the associated value",
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        v0(),
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        getMap().getOrDefault(k0(), v3()));
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  }
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  @CollectionSize.Require(absent = ZERO)
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  public void testGetOrDefault_presentNullDefault() {
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    assertEquals(
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        "getOrDefault(present, null) should return the associated value",
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        v0(),
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        getMap().getOrDefault(k0(), null));
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  }
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  public void testGetOrDefault_absent() {
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    assertEquals(
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        "getOrDefault(absent, def) should return the default value",
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        v3(),
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        getMap().getOrDefault(k3(), v3()));
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  }
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  public void testGetOrDefault_absentNullDefault() {
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    assertNull("getOrDefault(absent, null) should return null", getMap().getOrDefault(k3(), null));
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  }
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  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
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  public void testGetOrDefault_absentNull() {
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    assertEquals(
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        "getOrDefault(null, def) should return the default value",
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        v3(),
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        getMap().getOrDefault(null, v3()));
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  }
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  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
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  public void testGetOrDefault_nullAbsentAndUnsupported() {
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    try {
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      assertEquals(
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          "getOrDefault(null, def) should return default or throw",
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          v3(),
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          getMap().getOrDefault(null, v3()));
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    } catch (NullPointerException tolerated) {
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    }
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  }
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  @MapFeature.Require(ALLOWS_NULL_KEYS)
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  @CollectionSize.Require(absent = ZERO)
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  public void testGetOrDefault_nonNullWhenNullContained() {
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    initMapWithNullKey();
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    assertEquals(
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        "getOrDefault(absent, default) should return default",
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        v3(),
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        getMap().getOrDefault(k3(), v3()));
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  }
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  @MapFeature.Require(ALLOWS_NULL_KEYS)
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  @CollectionSize.Require(absent = ZERO)
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  public void testGetOrDefault_presentNull() {
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    initMapWithNullKey();
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    assertEquals(
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        "getOrDefault(null, default) should return the associated value",
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        getValueForNullKey(),
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        getMap().getOrDefault(null, v3()));
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  }
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  @MapFeature.Require(ALLOWS_NULL_VALUES)
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  @CollectionSize.Require(absent = ZERO)
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  public void testGetOrDefault_presentMappedToNull() {
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    initMapWithNullValue();
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    assertNull(
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        "getOrDefault(mappedToNull, default) should return null",
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        getMap().getOrDefault(getKeyForNullValue(), v3()));
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  }
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  public void testGet_wrongType() {
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    try {
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      assertEquals(
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          "getOrDefault(wrongType, default) should return default or throw",
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          v3(),
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          getMap().getOrDefault(WrongType.VALUE, v3()));
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    } catch (ClassCastException tolerated) {
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    }
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  }
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}
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