001/*
002 * Copyright (C) 2015 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.collect.testing.testers;
018
019import static com.google.common.collect.testing.features.CollectionSize.ZERO;
020import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
021import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES;
022import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
023
024import com.google.common.annotations.GwtCompatible;
025import com.google.common.collect.testing.AbstractMapTester;
026import com.google.common.collect.testing.WrongType;
027import com.google.common.collect.testing.features.CollectionSize;
028import com.google.common.collect.testing.features.MapFeature;
029import java.util.Map;
030import org.junit.Ignore;
031
032/**
033 * A generic JUnit test which tests {@link Map#getOrDefault}. Can't be invoked directly; please see
034 * {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
035 *
036 * @author Louis Wasserman
037 */
038@GwtCompatible
039@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
040public class MapGetOrDefaultTester<K, V> extends AbstractMapTester<K, V> {
041  @CollectionSize.Require(absent = ZERO)
042  public void testGetOrDefault_present() {
043    assertEquals(
044        "getOrDefault(present, def) should return the associated value",
045        v0(),
046        getMap().getOrDefault(k0(), v3()));
047  }
048
049  @CollectionSize.Require(absent = ZERO)
050  public void testGetOrDefault_presentNullDefault() {
051    assertEquals(
052        "getOrDefault(present, null) should return the associated value",
053        v0(),
054        getMap().getOrDefault(k0(), null));
055  }
056
057  public void testGetOrDefault_absent() {
058    assertEquals(
059        "getOrDefault(absent, def) should return the default value",
060        v3(),
061        getMap().getOrDefault(k3(), v3()));
062  }
063
064  public void testGetOrDefault_absentNullDefault() {
065    assertNull("getOrDefault(absent, null) should return null", getMap().getOrDefault(k3(), null));
066  }
067
068  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
069  public void testGetOrDefault_absentNull() {
070    assertEquals(
071        "getOrDefault(null, def) should return the default value",
072        v3(),
073        getMap().getOrDefault(null, v3()));
074  }
075
076  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
077  public void testGetOrDefault_nullAbsentAndUnsupported() {
078    try {
079      assertEquals(
080          "getOrDefault(null, def) should return default or throw",
081          v3(),
082          getMap().getOrDefault(null, v3()));
083    } catch (NullPointerException tolerated) {
084    }
085  }
086
087  @MapFeature.Require(ALLOWS_NULL_KEYS)
088  @CollectionSize.Require(absent = ZERO)
089  public void testGetOrDefault_nonNullWhenNullContained() {
090    initMapWithNullKey();
091    assertEquals(
092        "getOrDefault(absent, default) should return default",
093        v3(),
094        getMap().getOrDefault(k3(), v3()));
095  }
096
097  @MapFeature.Require(ALLOWS_NULL_KEYS)
098  @CollectionSize.Require(absent = ZERO)
099  public void testGetOrDefault_presentNull() {
100    initMapWithNullKey();
101    assertEquals(
102        "getOrDefault(null, default) should return the associated value",
103        getValueForNullKey(),
104        getMap().getOrDefault(null, v3()));
105  }
106
107  @MapFeature.Require(ALLOWS_NULL_VALUES)
108  @CollectionSize.Require(absent = ZERO)
109  public void testGetOrDefault_presentMappedToNull() {
110    initMapWithNullValue();
111    assertNull(
112        "getOrDefault(mappedToNull, default) should return null",
113        getMap().getOrDefault(getKeyForNullValue(), v3()));
114  }
115
116  public void testGet_wrongType() {
117    try {
118      assertEquals(
119          "getOrDefault(wrongType, default) should return default or throw",
120          v3(),
121          getMap().getOrDefault(WrongType.VALUE, v3()));
122    } catch (ClassCastException tolerated) {
123    }
124  }
125}