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BAEL-6600: add further test cases

This commit is contained in:
macasari 2023-11-15 23:53:42 +01:00
parent 10152801a5
commit 5942a934cf
2 changed files with 39 additions and 10 deletions
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8
core-java-modules/core-java-collections-maps-7/src/main/java/com/baeldung/map/HashMapWithMaxSizeLimit.java
View File

@ -7,17 +7,21 @@ public class HashMapWithMaxSizeLimit<K, V> extends HashMap<K, V> {
private static final long serialVersionUID = 1L;
private int maxSize = -1;
public HashMapWithMaxSizeLimit() {
super();
}
public HashMapWithMaxSizeLimit(int maxSize) {
super();
this.maxSize = maxSize;
}
}
@Override
public V put(K key, V value) {
if (this.maxSize == -1 || this.containsKey(key) || this.size() < this.maxSize) {
return super.put(key, value);
}
}
throw new RuntimeException("Max size exceeded!");
}

41
core-java-modules/core-java-collections-maps-7/src/test/java/com/baeldung/map/LimitMaxSizeHashMapByCustomHashMapUnitTest.java
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@ -1,9 +1,9 @@
package com.baeldung.map;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertThrows;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
class LimitMaxSizeHashMapByCustomHashMapUnitTest {
@ -11,24 +11,49 @@ class LimitMaxSizeHashMapByCustomHashMapUnitTest {
private final int MAX_SIZE = 4;
private HashMapWithMaxSizeLimit<Integer, String> hashMapWithMaxSizeLimit;
@BeforeEach
void setUp() {
hashMapWithMaxSizeLimit = new HashMapWithMaxSizeLimit<Integer, String>(MAX_SIZE);
@Test
void givenCustomHashMapObject_whenThereIsNoLimit_thenDoesNotThrowException() {
hashMapWithMaxSizeLimit = new HashMapWithMaxSizeLimit<Integer, String>();
assertDoesNotThrow(() -> {
for (int i = 0; i < 10000; i++) {
hashMapWithMaxSizeLimit.put(i, i + "");
}
});
}
@Test
void givenCustomHashMapObject_whenAddingNewEntryAndLimitExceeded_thenThrowsException() {
Exception exception = assertThrows(RuntimeException.class, () -> {
void givenCustomHashMapObject_whenLimitNotReached_thenDoesNotThrowException() {
hashMapWithMaxSizeLimit = new HashMapWithMaxSizeLimit<Integer, String>(MAX_SIZE);
assertDoesNotThrow(() -> {
for (int i = 0; i < 4; i++) {
hashMapWithMaxSizeLimit.put(i, i + "");
}
});
}
@Test
void givenCustomHashMapObject_whenReplacingValueWhenLimitIsReached_thenDoesNotThrowException() {
hashMapWithMaxSizeLimit = new HashMapWithMaxSizeLimit<Integer, String>(MAX_SIZE);
assertDoesNotThrow(() -> {
hashMapWithMaxSizeLimit.put(1, "One");
hashMapWithMaxSizeLimit.put(2, "Two");
hashMapWithMaxSizeLimit.put(3, "Three");
hashMapWithMaxSizeLimit.put(4, "Four");
hashMapWithMaxSizeLimit.put(5, "Five");
hashMapWithMaxSizeLimit.put(4, "4");
});
}
@Test
void givenCustomHashMapObject_whenLimitExceeded_thenThrowsException() {
hashMapWithMaxSizeLimit = new HashMapWithMaxSizeLimit<Integer, String>(MAX_SIZE);
Exception exception = assertThrows(RuntimeException.class, () -> {
for (int i = 0; i < 5; i++) {
hashMapWithMaxSizeLimit.put(i, i + "");
}
});
String messageThrownWhenSizeExceedsLimit = "Max size exceeded!";
String actualMessage = exception.getMessage();
assertTrue(actualMessage.equals(messageThrownWhenSizeExceedsLimit));
}