ab0b2df9e4
* BAEL-4719 Using the Map.Entry Java Class * BAEL-4719 Using the Map.Entry Java Class * BAEL-4719 Change description * BAEL-4719 Feedback from first draft
34 lines
1.4 KiB
Java
34 lines
1.4 KiB
Java
package com.baeldung.map.entry;
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import org.junit.Test;
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import java.util.*;
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import static org.junit.Assert.assertEquals;
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public class MapEntryUnitTest {
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@Test
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public void givenSimpleEntryList_whenAddDuplicateKey_thenDoesNotOverwriteExistingKey() {
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List<Map.Entry<String, Book>> orderedTuples = new ArrayList<>();
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orderedTuples.add(new AbstractMap.SimpleEntry<>("9780134685991", new Book("Effective Java 3d Edition", "Joshua Bloch")));
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orderedTuples.add(new AbstractMap.SimpleEntry<>("9780132350884", new Book("Clean Code", "Robert C Martin")));
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orderedTuples.add(new AbstractMap.SimpleEntry<>("9780132350884", new Book("Clean Code", "Robert C Martin")));
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assertEquals(3, orderedTuples.size());
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assertEquals("9780134685991", orderedTuples.get(0).getKey());
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assertEquals("9780132350884", orderedTuples.get(1).getKey());
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assertEquals("9780132350884", orderedTuples.get(2).getKey());
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}
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@Test
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public void givenRegularMap_whenAddDuplicateKey_thenOverwritesExistingKey() {
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Map<String, Book> entries = new HashMap<>();
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entries.put("9780134685991", new Book("Effective Java 3d Edition", "Joshua Bloch"));
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entries.put("9780132350884", new Book("Clean Code", "Robert C Martin"));
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entries.put("9780132350884", new Book("Clean Code", "Robert C Martin"));
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assertEquals(2, entries.size());
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}
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}
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