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2 changes: 1 addition & 1 deletion
2
...ava/com/baeldung/map/MyLinkedHashMap.java → ...ng/map/linkedhashmap/MyLinkedHashMap.java
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2 changes: 1 addition & 1 deletion
2
...om/baeldung/map/ImmutableMapUnitTest.java → ...g/map/immutable/ImmutableMapUnitTest.java
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63 changes: 63 additions & 0 deletions
63
...ollections-maps-2/src/test/java/com/baeldung/map/linkedhashmap/LinkedHashMapUnitTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package com.baeldung.map.linkedhashmap; | ||
|
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| import static org.junit.Assert.assertEquals; | ||
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| import java.util.LinkedHashMap; | ||
| import java.util.Set; | ||
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| import org.junit.Test; | ||
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| public class LinkedHashMapUnitTest { | ||
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| @Test | ||
| public void givenLinkedHashMap_whenGetsOrderedKeyset_thenCorrect() { | ||
| LinkedHashMap<Integer, String> map = new LinkedHashMap<>(); | ||
| map.put(1, null); | ||
| map.put(2, null); | ||
| map.put(3, null); | ||
| map.put(4, null); | ||
| map.put(5, null); | ||
| Set<Integer> keys = map.keySet(); | ||
| Integer[] arr = keys.toArray(new Integer[0]); | ||
| for (int i = 0; i < arr.length; i++) { | ||
| assertEquals(Integer.valueOf(i + 1), arr[i]); | ||
| } | ||
| } | ||
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| @Test | ||
| public void givenLinkedHashMap_whenAccessOrderWorks_thenCorrect() { | ||
| LinkedHashMap<Integer, String> map = new LinkedHashMap<>(16, .75f, true); | ||
| map.put(1, null); | ||
| map.put(2, null); | ||
| map.put(3, null); | ||
| map.put(4, null); | ||
| map.put(5, null); | ||
| Set<Integer> keys = map.keySet(); | ||
| assertEquals("[1, 2, 3, 4, 5]", keys.toString()); | ||
| map.get(4); | ||
| assertEquals("[1, 2, 3, 5, 4]", keys.toString()); | ||
| map.get(1); | ||
| assertEquals("[2, 3, 5, 4, 1]", keys.toString()); | ||
| map.get(3); | ||
| assertEquals("[2, 5, 4, 1, 3]", keys.toString()); | ||
| } | ||
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| @Test | ||
| public void givenLinkedHashMap_whenRemovesEldestEntry_thenCorrect() { | ||
| LinkedHashMap<Integer, String> map = new MyLinkedHashMap<>(16, .75f, true); | ||
| map.put(1, null); | ||
| map.put(2, null); | ||
| map.put(3, null); | ||
| map.put(4, null); | ||
| map.put(5, null); | ||
| Set<Integer> keys = map.keySet(); | ||
| assertEquals("[1, 2, 3, 4, 5]", keys.toString()); | ||
| map.put(6, null); | ||
| assertEquals("[2, 3, 4, 5, 6]", keys.toString()); | ||
| map.put(7, null); | ||
| assertEquals("[3, 4, 5, 6, 7]", keys.toString()); | ||
| map.put(8, null); | ||
| assertEquals("[4, 5, 6, 7, 8]", keys.toString()); | ||
| } | ||
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| } |
68 changes: 68 additions & 0 deletions
68
.../core-java-collections-maps-2/src/test/java/com/baeldung/map/treemap/TreeMapUnitTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package com.baeldung.map.treemap; | ||
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| import static org.junit.Assert.assertEquals; | ||
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| import java.util.Comparator; | ||
| import java.util.Set; | ||
| import java.util.TreeMap; | ||
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| import org.junit.Test; | ||
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| public class TreeMapUnitTest { | ||
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| @Test | ||
| public void givenTreeMap_whenOrdersEntriesNaturally_thenCorrect() { | ||
| TreeMap<Integer, String> map = new TreeMap<>(); | ||
| map.put(3, "val"); | ||
| map.put(2, "val"); | ||
| map.put(1, "val"); | ||
| map.put(5, "val"); | ||
| map.put(4, "val"); | ||
| assertEquals("[1, 2, 3, 4, 5]", map.keySet().toString()); | ||
| } | ||
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| @Test | ||
| public void givenTreeMap_whenOrdersEntriesNaturally_thenCorrect2() { | ||
| TreeMap<String, String> map = new TreeMap<>(); | ||
| map.put("c", "val"); | ||
| map.put("b", "val"); | ||
| map.put("a", "val"); | ||
| map.put("e", "val"); | ||
| map.put("d", "val"); | ||
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| assertEquals("[a, b, c, d, e]", map.keySet().toString()); | ||
| } | ||
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| @Test | ||
| public void givenTreeMap_whenOrdersEntriesByComparator_thenCorrect() { | ||
| TreeMap<Integer, String> map = new TreeMap<>(Comparator.reverseOrder()); | ||
| map.put(3, "val"); | ||
| map.put(2, "val"); | ||
| map.put(1, "val"); | ||
| map.put(5, "val"); | ||
| map.put(4, "val"); | ||
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| assertEquals("[5, 4, 3, 2, 1]", map.keySet().toString()); | ||
| } | ||
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| @Test | ||
| public void givenTreeMap_whenPerformsQueries_thenCorrect() { | ||
| TreeMap<Integer, String> map = new TreeMap<>(); | ||
| map.put(3, "val"); | ||
| map.put(2, "val"); | ||
| map.put(1, "val"); | ||
| map.put(5, "val"); | ||
| map.put(4, "val"); | ||
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| Integer highestKey = map.lastKey(); | ||
| Integer lowestKey = map.firstKey(); | ||
| Set<Integer> keysLessThan3 = map.headMap(3).keySet(); | ||
| Set<Integer> keysGreaterThanEqTo3 = map.tailMap(3).keySet(); | ||
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| assertEquals(Integer.valueOf(5), highestKey); | ||
| assertEquals(Integer.valueOf(1), lowestKey); | ||
| assertEquals("[1, 2]", keysLessThan3.toString()); | ||
| assertEquals("[3, 4, 5]", keysGreaterThanEqTo3.toString()); | ||
| } | ||
|
|
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| } |
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2 changes: 1 addition & 1 deletion
2
...src/main/java/com/baeldung/map/MyKey.java → ...java/com/baeldung/map/advanced/MyKey.java
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2 changes: 1 addition & 1 deletion
2
...com/baeldung/map/EmptyMapInitializer.java → ...ung/map/emptymap/EmptyMapInitializer.java
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