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BAEL-1698 (#4134) 

* Also needed

* BAEL-1698
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Andrea Ligios 2018-04-29 21:20:32 +02:00 committed by Grzegorz Piwowarek
parent 40d6af7fab
commit 94e0755cee
1 changed files with 115 additions and 0 deletions
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core-java-collections/src/test/java/com/baeldung/java/map/MapMultipleValuesTest.java Normal file
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package com.baeldung.java.map;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.collections4.MultiMap;
import org.apache.commons.collections4.MultiMapUtils;
import org.apache.commons.collections4.MultiValuedMap;
import org.apache.commons.collections4.map.MultiValueMap;
import org.apache.commons.collections4.multimap.ArrayListValuedHashMap;
import org.apache.commons.collections4.multimap.HashSetValuedHashMap;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.LinkedHashMultimap;
import com.google.common.collect.Multimap;
import com.google.common.collect.TreeMultimap;
public class MapMultipleValuesTest {
private static final Logger LOG = LoggerFactory.getLogger(MapMultipleValuesTest.class);
@Test
public void givenHashMap_whenPuttingTwice_thenReturningFirstValue() {
Map<String, String> map = new HashMap<>();
assertThat(map.put("key1", "value1")).isEqualTo(null);
assertThat(map.put("key1", "value2")).isEqualTo("value1");
assertThat(map.get("key1")).isEqualTo("value2");
}
@Test
public void givenCollectionAsValue_whenPuttingTwice_thenReturningCollection() {
Map<String, List<String>> map = new HashMap<>();
List<String> list = new ArrayList<>();
map.put("key1", list);
map.get("key1").add("value1");
map.get("key1").add("value2");
assertThat(map.get("key1").get(0)).isEqualTo("value1");
assertThat(map.get("key1").get(1)).isEqualTo("value2");
}
@Test
public void givenMultiValueMap_whenPuttingTwice_thenReturningValues() {
MultiMap<String, String> map = new MultiValueMap<>();
map.put("key1", "value1");
map.put("key1", "value2");
assertThat((Collection<String>) map.get("key1"))
.contains("value1", "value2");
}
@Test
public void givenArrayListValuedHashMap_whenPuttingDoubleValues_thenReturningAllValues() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key1", "value1");
map.put("key1", "value2");
map.put("key1", "value2");
assertThat((Collection<String>) map.get("key1"))
.containsExactly("value1", "value2", "value2");
}
@Test
public void givenHashSetValuedHashMap_whenPuttingTwiceTheSame_thenReturningOneValue() {
MultiValuedMap<String, String> map = new HashSetValuedHashMap<>();
map.put("key1", "value1");
map.put("key1", "value1");
assertThat((Collection<String>) map.get("key1"))
.containsExactly("value1");
}
@Test(expected = UnsupportedOperationException.class)
public void givenUnmodifiableMultiValuedMap_whenInserting_thenThrowingException() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key1", "value1");
map.put("key1", "value2");
MultiValuedMap<String, String> immutableMap =
MultiMapUtils.unmodifiableMultiValuedMap(map);
immutableMap.put("key1", "value3");
}
@Test
public void givenArrayListMultiMap_whenInserting_thenCorrectOutput() {
Multimap<String, String> map = ArrayListMultimap.create();
map.put("key1", "value2");
map.put("key1", "value1");
assertThat((Collection<String>) map.get("key1"))
.containsExactly("value2", "value1");
}
@Test
public void givenLinkedHashMultiMap_whenInserting_thenReturningValuesInInsertionOrder() {
Multimap<String, String> map = LinkedHashMultimap.create();
map.put("key1", "value3");
map.put("key1", "value1");
map.put("key1", "value2");
assertThat((Collection<String>) map.get("key1"))
.containsExactly("value3", "value1", "value2");
}
@Test
public void givenTreeMultimap_whenInserting_thenReturningValuesInNaturalOrder() {
Multimap<String, String> map = TreeMultimap.create();
map.put("key1", "value3");
map.put("key1", "value1");
map.put("key1", "value2");
assertThat((Collection<String>) map.get("key1"))
.containsExactly("value1", "value2", "value3");
}
}